[perl5.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(const 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)) &&
			phe->h_addrtype == AF_INET && phe->h_length == 4) {
		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;
	int addr_len;

	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");
	if (len > 1 && sun_ad.sun_path[0] == '\0') {
		/* Linux-style abstract-namespace socket.
		 * The name is not a file name, but an array of arbitrary
		 * character, starting with \0 and possibly including \0s,
		 * therefore the length of the structure must denote the
		 * end of that character array */
		addr_len = (char *)&(sun_ad.sun_path) - (char *)&sun_ad + len;
	} else {
		addr_len = sizeof sun_ad;
	}
	ST(0) = sv_2mortal(newSVpvn((char *)&sun_ad, addr_len));
#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);
	int addr_len;
#   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);
	}

	if (addr.sun_path[0] == '\0') {
		/* Linux-style abstract socket address begins with a nul
		 * and can contain nuls. */
		addr_len = (char *)&addr - (char *)&(addr.sun_path) + sockaddrlen;
	} else {
		for (addr_len = 0; addr.sun_path[addr_len]
		     && addr_len < sizeof addr.sun_path; addr_len++);
	}

	ST(0) = sv_2mortal(newSVpvn(addr.sun_path, addr_len));
#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)));
	}

void
inet_ntop(af, ip_address_sv)
        int     af
        SV *    ip_address_sv
        CODE:
#ifdef HAS_INETNTOP
	STRLEN addrlen, struct_size;
	struct in6_addr addr;
	char str[INET6_ADDRSTRLEN];
	char *ip_address = SvPV(ip_address_sv, addrlen);

        if(af == AF_INET) {
            struct_size = sizeof(struct in_addr);
        } else if(af == AF_INET6) {
            struct_size = sizeof(struct in6_addr);
        } else {
           croak("Bad address family for Socket::inet_ntop, got %d, should be either AF_INET or AF_INET6",
               af);
        }

	Copy( ip_address, &addr, sizeof addr, char );
	inet_ntop(af, &addr, str, INET6_ADDRSTRLEN);

	ST(0) = sv_2mortal(newSVpv(str, strlen(str)));
#else
        ST(0) = (SV *)not_here("inet_ntop");
#endif

void
inet_pton(af, host)
        int           af
        const char *  host
        CODE:
#ifdef HAS_INETPTON
        int ok;
        struct in6_addr ip_address;
        if(af != AF_INET && af != AF_INET6) {
           croak("Bad address family for %s, got %d, should be either AF_INET or AF_INET6",
                        "Socket::inet_pton",
                        af);
        }
        ok = (*host != '\0') && inet_pton(af, host, &ip_address);

        ST(0) = sv_newmortal();
        if (ok) {
                sv_setpvn( ST(0), (char *)&ip_address, sizeof ip_address );
        }
#else
        ST(0) = (SV *)not_here("inet_pton");
#endif
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
fc87b71c NIS	6	#include <stddef.h>
fc87b71c NIS	7
8e07c86e AD	8	#ifndef VMS
	9	# ifdef I_SYS_TYPES
	10	# include <sys/types.h>
	11	# endif
87edd446	12	# if !defined(ultrix) /* Avoid double definition. */
43db6828 JH	13	# include <sys/socket.h>
43db6828 JH	14	# endif
29209bc5	15	# if defined(USE_SOCKS) && defined(I_SOCKS)
86959918	16	# include <socks.h>
a062834f	17	# endif
9cc6feab JH	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 JH	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 JH	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 AD	34	# include <netinet/in.h>
8e07c86e AD	35	# endif
86959918	36	# ifdef I_NETDB
87edd446 JH	37	# if !defined(ultrix) /* Avoid double definition. */
	38	# include <netdb.h>
	39	# endif
86959918	40	# endif
9cc6feab JH	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 JH	51	#ifdef NETWARE
	52	NETDB_DEFINE_CONTEXT
	53	NETINET_DEFINE_CONTEXT
	54	#endif
	55
6b1016b5 JH	56	#ifdef I_SYSUIO
	57	# include <sys/uio.h>
	58	#endif
	59
a0d0e21e	60	#ifndef AF_NBS
9cc6feab	61	# undef PF_NBS
a0d0e21e LW	62	#endif
	63
	64	#ifndef AF_X25
9cc6feab	65	# undef PF_X25
a0d0e21e LW	66	#endif
a0d0e21e LW	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 AD	76	#endif /* INADDR_LOOPBACK */
8e07c86e AD	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
d3f5e399	185	not_here(const char *s)
a0d0e21e LW	186	{
	187	croak("Socket::%s not implemented on this architecture", s);
	188	return -1;
	189	}
	190
2528d3bc JH	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 LW	223	MODULE = Socket PACKAGE = Socket
a0d0e21e LW	224
1cb0fb50	225	INCLUDE: const-xs.inc
8e07c86e AD	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
2130c338 PK	236	if (!ok && (phe = gethostbyname(host)) &&
2130c338 PK	237	phe->h_addrtype == AF_INET && phe->h_length == 4) {
fbf77aee	238	Copy( phe->h_addr, &ip_address, phe->h_length, char );
7e1af8bc	239	ok = 1;
8e07c86e AD	240	}
	241
	242	ST(0) = sv_newmortal();
2528d3bc	243	if (ok)
fbf77aee	244	sv_setpvn( ST(0), (char *)&ip_address, sizeof ip_address );
8e07c86e	245	}
8e07c86e AD	246
	247	void
	248	inet_ntoa(ip_address_sv)
	249	SV * ip_address_sv
	250	CODE:
	251	{
	252	STRLEN addrlen;
	253	struct in_addr addr;
	254	char * addr_str;
1d68b939 JH	255	char * ip_address;
1d68b939 JH	256	if (DO_UTF8(ip_address_sv) && !sv_utf8_downgrade(ip_address_sv, 1))
b2d93eb8	257	croak("Wide character in Socket::inet_ntoa");
f780604f	258	ip_address = SvPVbyte(ip_address_sv, addrlen);
2528d3bc JH	259	if (addrlen == sizeof(addr) \|\| addrlen == 4)
	260	addr.s_addr =
	261	(ip_address[0] & 0xFF) << 24 \|
	262	(ip_address[1] & 0xFF) << 16 \|
	263	(ip_address[2] & 0xFF) << 8 \|
	264	(ip_address[3] & 0xFF);
	265	else
	266	croak("Bad arg length for %s, length is %d, should be %d",
	267	"Socket::inet_ntoa",
	268	addrlen, sizeof(addr));
	269	/* We could use inet_ntoa() but that is broken
	270	* in HP-UX + GCC + 64bitint (returns "0.0.0.0"),
1d88b533 JH	271	* so let's use this sprintf() workaround everywhere.
1d88b533 JH	272	* This is also more threadsafe than using inet_ntoa(). */
a02a5408	273	Newx(addr_str, 4 * 3 + 3 + 1, char); /* IPv6? */
1d68b939 JH	274	sprintf(addr_str, "%d.%d.%d.%d",
	275	((addr.s_addr >> 24) & 0xFF),
	276	((addr.s_addr >> 16) & 0xFF),
	277	((addr.s_addr >> 8) & 0xFF),
	278	( addr.s_addr & 0xFF));
	279	ST(0) = sv_2mortal(newSVpvn(addr_str, strlen(addr_str)));
	280	Safefree(addr_str);
8e07c86e AD	281	}
	282
	283	void
2a84dff3 GA	284	sockaddr_family(sockaddr)
	285	SV * sockaddr
	286	PREINIT:
	287	STRLEN sockaddr_len;
f780604f	288	char *sockaddr_pv = SvPVbyte(sockaddr, sockaddr_len);
2a84dff3 GA	289	CODE:
	290	if (sockaddr_len < offsetof(struct sockaddr, sa_data)) {
	291	croak("Bad arg length for %s, length is %d, should be at least %d",
	292	"Socket::sockaddr_family", sockaddr_len,
	293	offsetof(struct sockaddr, sa_data));
	294	}
	295	ST(0) = sv_2mortal(newSViv(((struct sockaddr*)sockaddr_pv)->sa_family));
	296
	297	void
4633a7c4	298	pack_sockaddr_un(pathname)
7513c55b	299	SV * pathname
4633a7c4 LW	300	CODE:
4633a7c4 LW	301	{
25f94b33	302	#ifdef I_SYS_UN
4633a7c4	303	struct sockaddr_un sun_ad; /* fear using sun */
fcdb74fc	304	STRLEN len;
7513c55b	305	char * pathname_pv;
99f13d4c	306	int addr_len;
202975e6	307
4633a7c4 LW	308	Zero( &sun_ad, sizeof sun_ad, char );
4633a7c4 LW	309	sun_ad.sun_family = AF_UNIX;
7513c55b	310	pathname_pv = SvPV(pathname,len);
20408e3c GS	311	if (len > sizeof(sun_ad.sun_path))
20408e3c GS	312	len = sizeof(sun_ad.sun_path);
202975e6 IZ	313	# ifdef OS2 /* Name should start with \socket\ and contain backslashes! */
	314	{
	315	int off;
	316	char s, e;
	317
7513c55b RGS	318	if (pathname_pv[0] != '/' && pathname_pv[0] != '\\')
	319	croak("Relative UNIX domain socket name '%s' unsupported",
	320	pathname_pv);
a062834f	321	else if (len < 8
7513c55b RGS	322	\|\| pathname_pv[7] != '/' && pathname_pv[7] != '\\'
7513c55b RGS	323	\|\| !strnicmp(pathname_pv + 1, "socket", 6))
202975e6 IZ	324	off = 7;
	325	else
	326	off = 0; /* Preserve names starting with \socket\ */
	327	Copy( "\\socket", sun_ad.sun_path, off, char);
7513c55b	328	Copy( pathname_pv, sun_ad.sun_path + off, len, char );
202975e6 IZ	329
	330	s = sun_ad.sun_path + off - 1;
	331	e = s + len + 1;
	332	while (++s < e)
	333	if (*s = '/')
	334	*s = '\\';
	335	}
a062834f	336	# else /* !( defined OS2 ) */
7513c55b	337	Copy( pathname_pv, sun_ad.sun_path, len, char );
202975e6	338	# endif
a062834f	339	if (0) not_here("dummy");
99f13d4c LR	340	if (len > 1 && sun_ad.sun_path[0] == '\0') {
	341	/* Linux-style abstract-namespace socket.
	342	* The name is not a file name, but an array of arbitrary
	343	* character, starting with \0 and possibly including \0s,
	344	* therefore the length of the structure must denote the
	345	* end of that character array */
178e6016	346	addr_len = (char )&(sun_ad.sun_path) - (char )&sun_ad + len;
99f13d4c LR	347	} else {
	348	addr_len = sizeof sun_ad;
	349	}
	350	ST(0) = sv_2mortal(newSVpvn((char *)&sun_ad, addr_len));
25f94b33 AD	351	#else
	352	ST(0) = (SV *) not_here("pack_sockaddr_un");
	353	#endif
	354
4633a7c4 LW	355	}
	356
	357	void
	358	unpack_sockaddr_un(sun_sv)
	359	SV * sun_sv
f13e1b2f	360	CODE:
4633a7c4	361	{
25f94b33	362	#ifdef I_SYS_UN
4633a7c4	363	struct sockaddr_un addr;
fcdb74fc	364	STRLEN sockaddrlen;
f780604f	365	char * sun_ad = SvPVbyte(sun_sv,sockaddrlen);
89904c08	366	int addr_len;
36902e12 RG	367	# ifndef __linux__
	368	/* On Linux sockaddrlen on sockets returned by accept, recvfrom,
	369	getpeername and getsockname is not equal to sizeof(addr). */
4633a7c4 LW	370	if (sockaddrlen != sizeof(addr)) {
	371	croak("Bad arg length for %s, length is %d, should be %d",
	372	"Socket::unpack_sockaddr_un",
	373	sockaddrlen, sizeof(addr));
	374	}
36902e12	375	# endif
4633a7c4 LW	376
	377	Copy( sun_ad, &addr, sizeof addr, char );
	378
	379	if ( addr.sun_family != AF_UNIX ) {
	380	croak("Bad address family for %s, got %d, should be %d",
	381	"Socket::unpack_sockaddr_un",
	382	addr.sun_family,
	383	AF_UNIX);
fcdb74fc	384	}
89904c08 LR	385
	386	if (addr.sun_path[0] == '\0') {
	387	/* Linux-style abstract socket address begins with a nul
	388	* and can contain nuls. */
178e6016	389	addr_len = (char )&addr - (char )&(addr.sun_path) + sockaddrlen;
89904c08 LR	390	} else {
	391	for (addr_len = 0; addr.sun_path[addr_len]
	392	&& addr_len < sizeof addr.sun_path; addr_len++);
	393	}
	394
	395	ST(0) = sv_2mortal(newSVpvn(addr.sun_path, addr_len));
25f94b33 AD	396	#else
	397	ST(0) = (SV *) not_here("unpack_sockaddr_un");
	398	#endif
4633a7c4 LW	399	}
	400
	401	void
2528d3bc	402	pack_sockaddr_in(port, ip_address_sv)
2c129a17	403	unsigned short port
2528d3bc	404	SV * ip_address_sv
8e07c86e AD	405	CODE:
	406	{
	407	struct sockaddr_in sin;
2528d3bc JH	408	struct in_addr addr;
	409	STRLEN addrlen;
	410	char * ip_address;
	411	if (DO_UTF8(ip_address_sv) && !sv_utf8_downgrade(ip_address_sv, 1))
	412	croak("Wide character in Socket::pack_sockaddr_in");
f780604f	413	ip_address = SvPVbyte(ip_address_sv, addrlen);
2528d3bc JH	414	if (addrlen == sizeof(addr) \|\| addrlen == 4)
	415	addr.s_addr =
	416	(ip_address[0] & 0xFF) << 24 \|
	417	(ip_address[1] & 0xFF) << 16 \|
	418	(ip_address[2] & 0xFF) << 8 \|
	419	(ip_address[3] & 0xFF);
	420	else
	421	croak("Bad arg length for %s, length is %d, should be %d",
	422	"Socket::pack_sockaddr_in",
	423	addrlen, sizeof(addr));
8e07c86e	424	Zero( &sin, sizeof sin, char );
4633a7c4	425	sin.sin_family = AF_INET;
8e07c86e	426	sin.sin_port = htons(port);
2528d3bc	427	sin.sin_addr.s_addr = htonl(addr.s_addr);
79cb57f6	428	ST(0) = sv_2mortal(newSVpvn((char *)&sin, sizeof sin));
8e07c86e AD	429	}
	430
	431	void
	432	unpack_sockaddr_in(sin_sv)
	433	SV * sin_sv
	434	PPCODE:
	435	{
	436	STRLEN sockaddrlen;
	437	struct sockaddr_in addr;
2c129a17	438	unsigned short port;
2528d3bc	439	struct in_addr ip_address;
f780604f	440	char * sin = SvPVbyte(sin_sv,sockaddrlen);
8e07c86e AD	441	if (sockaddrlen != sizeof(addr)) {
	442	croak("Bad arg length for %s, length is %d, should be %d",
	443	"Socket::unpack_sockaddr_in",
	444	sockaddrlen, sizeof(addr));
	445	}
8e07c86e	446	Copy( sin, &addr,sizeof addr, char );
4633a7c4 LW	447	if ( addr.sin_family != AF_INET ) {
	448	croak("Bad address family for %s, got %d, should be %d",
	449	"Socket::unpack_sockaddr_in",
	450	addr.sin_family,
	451	AF_INET);
a062834f	452	}
8e07c86e AD	453	port = ntohs(addr.sin_port);
	454	ip_address = addr.sin_addr;
	455
924508f0	456	EXTEND(SP, 2);
2c129a17	457	PUSHs(sv_2mortal(newSViv((IV) port)));
2528d3bc	458	PUSHs(sv_2mortal(newSVpvn((char *)&ip_address, sizeof ip_address)));
8e07c86e	459	}
036d8bd4 SP	460
	461	void
	462	inet_ntop(af, ip_address_sv)
	463	int af
	464	SV * ip_address_sv
	465	CODE:
	466	#ifdef HAS_INETNTOP
	467	STRLEN addrlen, struct_size;
	468	struct in6_addr addr;
	469	char str[INET6_ADDRSTRLEN];
	470	char *ip_address = SvPV(ip_address_sv, addrlen);
	471
	472	if(af == AF_INET) {
	473	struct_size = sizeof(struct in_addr);
	474	} else if(af == AF_INET6) {
	475	struct_size = sizeof(struct in6_addr);
	476	} else {
	477	croak("Bad address family for Socket::inet_ntop, got %d, should be either AF_INET or AF_INET6",
	478	af);
	479	}
	480
	481	Copy( ip_address, &addr, sizeof addr, char );
	482	inet_ntop(af, &addr, str, INET6_ADDRSTRLEN);
	483
	484	ST(0) = sv_2mortal(newSVpv(str, strlen(str)));
	485	#else
	486	ST(0) = (SV *)not_here("inet_ntop");
	487	#endif
	488
	489	void
	490	inet_pton(af, host)
	491	int af
	492	const char * host
	493	CODE:
	494	#ifdef HAS_INETPTON
5a8cf367	495	int ok;
036d8bd4 SP	496	struct in6_addr ip_address;
	497	if(af != AF_INET && af != AF_INET6) {
	498	croak("Bad address family for %s, got %d, should be either AF_INET or AF_INET6",
	499	"Socket::inet_pton",
	500	af);
	501	}
5a8cf367	502	ok = (*host != '\0') && inet_pton(af, host, &ip_address);
036d8bd4 SP	503
	504	ST(0) = sv_newmortal();
	505	if (ok) {
	506	sv_setpvn( ST(0), (char *)&ip_address, sizeof ip_address );
	507	}
	508	#else
	509	ST(0) = (SV *)not_here("inet_pton");
	510	#endif