[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 * ip_address;
	if (DO_UTF8(ip_address_sv) && !sv_utf8_downgrade(ip_address_sv, 1))
	     croak("Wide character in %s", "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(). */
	ST(0) = sv_2mortal(Perl_newSVpvf(aTHX_ "%d.%d.%d.%d", /* IPv6? */
					 ((addr.s_addr >> 24) & 0xFF),
					 ((addr.s_addr >> 16) & 0xFF),
					 ((addr.s_addr >>  8) & 0xFF),
					 ( addr.s_addr        & 0xFF)));
	}

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;
	}
#  ifdef HAS_SOCKADDR_SA_LEN
	sun_ad.sun_len = addr_len;
#  endif
	ST(0) = newSVpvn_flags((char *)&sun_ad, addr_len, SVs_TEMP);
#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 < (int)sizeof(addr.sun_path); addr_len++);
	}

	ST(0) = newSVpvn_flags(addr.sun_path, addr_len, SVs_TEMP);
#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 %s", "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);
#  ifdef HAS_SOCKADDR_SA_LEN
	sin.sin_len = sizeof (sin);
#  endif
	ST(0) = newSVpvn_flags((char *)&sin, sizeof (sin), SVs_TEMP);
	}

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(newSVpvn_flags((char *)&ip_address, sizeof(ip_address), SVs_TEMP));
	}

void
pack_sockaddr_in6(port, sin6_addr, scope_id=0, flowinfo=0)
	unsigned short	port
	SV *	sin6_addr
	unsigned long	scope_id
	unsigned long	flowinfo
	CODE:
	{
#ifdef AF_INET6
	struct sockaddr_in6 sin6;
	char * addrbytes;
	STRLEN addrlen;
	if (DO_UTF8(sin6_addr) && !sv_utf8_downgrade(sin6_addr, 1))
	    croak("Wide character in %s", "Socket::pack_sockaddr_in6");
	addrbytes = SvPVbyte(sin6_addr, addrlen);
	if(addrlen != sizeof(sin6.sin6_addr))
	    croak("Bad arg length %s, length is %d, should be %d",
		  "Socket::pack_sockaddr_in6", addrlen, sizeof(sin6.sin6_addr));
	Zero(&sin6, sizeof(sin6), char);
	sin6.sin6_family = AF_INET6;
	sin6.sin6_port = htons(port);
	sin6.sin6_flowinfo = htonl(flowinfo);
	Copy(addrbytes, &sin6.sin6_addr, sizeof(sin6.sin6_addr), char);
#if !defined(__GLIBC__) || (__GLIBC__ > 2) || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3)
	sin6.sin6_scope_id = scope_id;
#endif
#  ifdef HAS_SOCKADDR_SA_LEN
	sin6.sin6_len = sizeof(sin6);
#  endif
	ST(0) = newSVpvn_flags((char *)&sin6, sizeof(sin6), SVs_TEMP);
#else
	ST(0) = (SV*)not_here("pack_sockaddr_in6");
#endif
	}

void
unpack_sockaddr_in6(sin6_sv)
	SV *	sin6_sv
	PPCODE:
	{
#ifdef AF_INET6
	STRLEN addrlen;
	struct sockaddr_in6 sin6;
	char * addrbytes = SvPVbyte(sin6_sv, addrlen);
	if (addrlen != sizeof(sin6))
	    croak("Bad arg length for %s, length is %d, should be %d",
		    "Socket::unpack_sockaddr_in6",
		    addrlen, sizeof(sin6));
	Copy(addrbytes, &sin6, sizeof(sin6), char);
	if(sin6.sin6_family != AF_INET6)
	    croak("Bad address family for %s, got %d, should be %d",
		    "Socket::unpack_sockaddr_in6",
		    sin6.sin6_family, AF_INET6);
	EXTEND(SP, 4);
	mPUSHi(ntohs(sin6.sin6_port));
	mPUSHp((char *)&sin6.sin6_addr, sizeof(sin6.sin6_addr));
#if !defined(__GLIBC__) || (__GLIBC__ > 2) || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3)
	mPUSHi(sin6.sin6_scope_id);
#else
	mPUSHi(0);
#endif
	mPUSHi(ntohl(sin6.sin6_flowinfo));
#else
	ST(0) = (SV*)not_here("pack_sockaddr_in6");
#endif
	}

void
inet_ntop(af, ip_address_sv)
        int     af
        SV *    ip_address_sv
        CODE:
#ifdef HAS_INETNTOP
	STRLEN addrlen, struct_size;
#ifdef AF_INET6
	struct in6_addr addr;
	char str[INET6_ADDRSTRLEN];
#else
	struct in_addr addr;
	char str[INET_ADDRSTRLEN];
#endif
	char *ip_address = SvPV(ip_address_sv, addrlen);

	struct_size = sizeof(addr);

	if(af != AF_INET
#ifdef AF_INET6
	    && af != AF_INET6
#endif
	  ) {
           croak("Bad address family for %s, got %d, should be"
#ifdef AF_INET6
	       " either AF_INET or AF_INET6",
#else
	       " AF_INET",
#endif
               "Socket::inet_ntop",
               af);
        }

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

	ST(0) = newSVpvn_flags(str, strlen(str), SVs_TEMP);
#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;
#ifdef AF_INET6
	struct in6_addr ip_address;
#else
	struct in_addr ip_address;
#endif

	if(af != AF_INET
#ifdef AF_INET6
		&& af != AF_INET6
#endif
	  ) {
		croak("Bad address family for %s, got %d, should be"
#ifdef AF_INET6
			" either AF_INET or AF_INET6",
#else
			" AF_INET",
#endif
                        "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 PP	78	#ifndef HAS_INET_ATON
7e1af8bc PP	79
a062834f	80	/*
7e1af8bc PP	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 PP	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 PP	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 PP	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	236	if (!ok && (phe = gethostbyname(host)) &&
2130c338	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;
1d68b939 JH	254	char * ip_address;
1d68b939 JH	255	if (DO_UTF8(ip_address_sv) && !sv_utf8_downgrade(ip_address_sv, 1))
bc354c70	256	croak("Wide character in %s", "Socket::inet_ntoa");
f780604f	257	ip_address = SvPVbyte(ip_address_sv, addrlen);
2528d3bc JH	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 JH	270	* so let's use this sprintf() workaround everywhere.
1d88b533 JH	271	* This is also more threadsafe than using inet_ntoa(). */
8063d419 NC	272	ST(0) = sv_2mortal(Perl_newSVpvf(aTHX_ "%d.%d.%d.%d", /* IPv6? */
	273	((addr.s_addr >> 24) & 0xFF),
	274	((addr.s_addr >> 16) & 0xFF),
	275	((addr.s_addr >> 8) & 0xFF),
	276	( addr.s_addr & 0xFF)));
8e07c86e AD	277	}
	278
	279	void
2a84dff3 GA	280	sockaddr_family(sockaddr)
	281	SV * sockaddr
	282	PREINIT:
	283	STRLEN sockaddr_len;
f780604f	284	char *sockaddr_pv = SvPVbyte(sockaddr, sockaddr_len);
2a84dff3 GA	285	CODE:
	286	if (sockaddr_len < offsetof(struct sockaddr, sa_data)) {
	287	croak("Bad arg length for %s, length is %d, should be at least %d",
	288	"Socket::sockaddr_family", sockaddr_len,
	289	offsetof(struct sockaddr, sa_data));
	290	}
	291	ST(0) = sv_2mortal(newSViv(((struct sockaddr*)sockaddr_pv)->sa_family));
	292
	293	void
4633a7c4	294	pack_sockaddr_un(pathname)
7513c55b	295	SV * pathname
4633a7c4 LW	296	CODE:
4633a7c4 LW	297	{
25f94b33	298	#ifdef I_SYS_UN
4633a7c4	299	struct sockaddr_un sun_ad; /* fear using sun */
fcdb74fc	300	STRLEN len;
7513c55b	301	char * pathname_pv;
99f13d4c	302	int addr_len;
202975e6	303
4633a7c4 LW	304	Zero( &sun_ad, sizeof sun_ad, char );
4633a7c4 LW	305	sun_ad.sun_family = AF_UNIX;
7513c55b	306	pathname_pv = SvPV(pathname,len);
20408e3c GS	307	if (len > sizeof(sun_ad.sun_path))
20408e3c GS	308	len = sizeof(sun_ad.sun_path);
202975e6 IZ	309	# ifdef OS2 /* Name should start with \socket\ and contain backslashes! */
	310	{
	311	int off;
	312	char s, e;
	313
7513c55b RGS	314	if (pathname_pv[0] != '/' && pathname_pv[0] != '\\')
	315	croak("Relative UNIX domain socket name '%s' unsupported",
	316	pathname_pv);
a062834f	317	else if (len < 8
7513c55b RGS	318	\|\| pathname_pv[7] != '/' && pathname_pv[7] != '\\'
7513c55b RGS	319	\|\| !strnicmp(pathname_pv + 1, "socket", 6))
202975e6 IZ	320	off = 7;
	321	else
	322	off = 0; /* Preserve names starting with \socket\ */
	323	Copy( "\\socket", sun_ad.sun_path, off, char);
7513c55b	324	Copy( pathname_pv, sun_ad.sun_path + off, len, char );
202975e6 IZ	325
	326	s = sun_ad.sun_path + off - 1;
	327	e = s + len + 1;
	328	while (++s < e)
	329	if (*s = '/')
	330	*s = '\\';
	331	}
a062834f	332	# else /* !( defined OS2 ) */
7513c55b	333	Copy( pathname_pv, sun_ad.sun_path, len, char );
202975e6	334	# endif
a062834f	335	if (0) not_here("dummy");
99f13d4c LR	336	if (len > 1 && sun_ad.sun_path[0] == '\0') {
	337	/* Linux-style abstract-namespace socket.
	338	* The name is not a file name, but an array of arbitrary
	339	* character, starting with \0 and possibly including \0s,
	340	* therefore the length of the structure must denote the
	341	* end of that character array */
178e6016	342	addr_len = (char )&(sun_ad.sun_path) - (char )&sun_ad + len;
99f13d4c LR	343	} else {
	344	addr_len = sizeof sun_ad;
	345	}
5897b17c PLE	346	# ifdef HAS_SOCKADDR_SA_LEN
	347	sun_ad.sun_len = addr_len;
	348	# endif
d3d34884	349	ST(0) = newSVpvn_flags((char *)&sun_ad, addr_len, SVs_TEMP);
25f94b33 AD	350	#else
	351	ST(0) = (SV *) not_here("pack_sockaddr_un");
	352	#endif
	353
4633a7c4 LW	354	}
	355
	356	void
	357	unpack_sockaddr_un(sun_sv)
	358	SV * sun_sv
f13e1b2f	359	CODE:
4633a7c4	360	{
25f94b33	361	#ifdef I_SYS_UN
4633a7c4	362	struct sockaddr_un addr;
fcdb74fc	363	STRLEN sockaddrlen;
f780604f	364	char * sun_ad = SvPVbyte(sun_sv,sockaddrlen);
89904c08	365	int addr_len;
36902e12 RG	366	# ifndef __linux__
	367	/* On Linux sockaddrlen on sockets returned by accept, recvfrom,
	368	getpeername and getsockname is not equal to sizeof(addr). */
4633a7c4 LW	369	if (sockaddrlen != sizeof(addr)) {
	370	croak("Bad arg length for %s, length is %d, should be %d",
	371	"Socket::unpack_sockaddr_un",
	372	sockaddrlen, sizeof(addr));
	373	}
36902e12	374	# endif
4633a7c4 LW	375
	376	Copy( sun_ad, &addr, sizeof addr, char );
	377
	378	if ( addr.sun_family != AF_UNIX ) {
	379	croak("Bad address family for %s, got %d, should be %d",
	380	"Socket::unpack_sockaddr_un",
	381	addr.sun_family,
	382	AF_UNIX);
fcdb74fc	383	}
89904c08 LR	384
	385	if (addr.sun_path[0] == '\0') {
	386	/* Linux-style abstract socket address begins with a nul
	387	* and can contain nuls. */
178e6016	388	addr_len = (char )&addr - (char )&(addr.sun_path) + sockaddrlen;
89904c08 LR	389	} else {
89904c08 LR	390	for (addr_len = 0; addr.sun_path[addr_len]
c33e8be1	391	&& addr_len < (int)sizeof(addr.sun_path); addr_len++);
89904c08 LR	392	}
89904c08 LR	393
d3d34884	394	ST(0) = newSVpvn_flags(addr.sun_path, addr_len, SVs_TEMP);
25f94b33 AD	395	#else
	396	ST(0) = (SV *) not_here("unpack_sockaddr_un");
	397	#endif
4633a7c4 LW	398	}
	399
	400	void
2528d3bc	401	pack_sockaddr_in(port, ip_address_sv)
2c129a17	402	unsigned short port
2528d3bc	403	SV * ip_address_sv
8e07c86e AD	404	CODE:
	405	{
	406	struct sockaddr_in sin;
2528d3bc JH	407	struct in_addr addr;
	408	STRLEN addrlen;
	409	char * ip_address;
	410	if (DO_UTF8(ip_address_sv) && !sv_utf8_downgrade(ip_address_sv, 1))
bc354c70	411	croak("Wide character in %s", "Socket::pack_sockaddr_in");
f780604f	412	ip_address = SvPVbyte(ip_address_sv, addrlen);
2528d3bc JH	413	if (addrlen == sizeof(addr) \|\| addrlen == 4)
	414	addr.s_addr =
	415	(ip_address[0] & 0xFF) << 24 \|
	416	(ip_address[1] & 0xFF) << 16 \|
	417	(ip_address[2] & 0xFF) << 8 \|
	418	(ip_address[3] & 0xFF);
	419	else
	420	croak("Bad arg length for %s, length is %d, should be %d",
	421	"Socket::pack_sockaddr_in",
	422	addrlen, sizeof(addr));
8e07c86e	423	Zero( &sin, sizeof sin, char );
4633a7c4	424	sin.sin_family = AF_INET;
8e07c86e	425	sin.sin_port = htons(port);
2528d3bc	426	sin.sin_addr.s_addr = htonl(addr.s_addr);
5897b17c PLE	427	# ifdef HAS_SOCKADDR_SA_LEN
	428	sin.sin_len = sizeof (sin);
	429	# endif
d3d34884	430	ST(0) = newSVpvn_flags((char *)&sin, sizeof (sin), SVs_TEMP);
8e07c86e AD	431	}
	432
	433	void
	434	unpack_sockaddr_in(sin_sv)
	435	SV * sin_sv
	436	PPCODE:
	437	{
	438	STRLEN sockaddrlen;
	439	struct sockaddr_in addr;
2c129a17	440	unsigned short port;
2528d3bc	441	struct in_addr ip_address;
f780604f	442	char * sin = SvPVbyte(sin_sv,sockaddrlen);
8e07c86e AD	443	if (sockaddrlen != sizeof(addr)) {
	444	croak("Bad arg length for %s, length is %d, should be %d",
	445	"Socket::unpack_sockaddr_in",
	446	sockaddrlen, sizeof(addr));
	447	}
8e07c86e	448	Copy( sin, &addr,sizeof addr, char );
4633a7c4 LW	449	if ( addr.sin_family != AF_INET ) {
	450	croak("Bad address family for %s, got %d, should be %d",
	451	"Socket::unpack_sockaddr_in",
	452	addr.sin_family,
	453	AF_INET);
a062834f	454	}
8e07c86e AD	455	port = ntohs(addr.sin_port);
	456	ip_address = addr.sin_addr;
	457
924508f0	458	EXTEND(SP, 2);
2c129a17	459	PUSHs(sv_2mortal(newSViv((IV) port)));
d3d34884	460	PUSHs(newSVpvn_flags((char *)&ip_address, sizeof(ip_address), SVs_TEMP));
8e07c86e	461	}
036d8bd4 SP	462
036d8bd4 SP	463	void
9987e04d PLE	464	pack_sockaddr_in6(port, sin6_addr, scope_id=0, flowinfo=0)
	465	unsigned short port
	466	SV * sin6_addr
	467	unsigned long scope_id
	468	unsigned long flowinfo
	469	CODE:
	470	{
	471	#ifdef AF_INET6
	472	struct sockaddr_in6 sin6;
	473	char * addrbytes;
	474	STRLEN addrlen;
	475	if (DO_UTF8(sin6_addr) && !sv_utf8_downgrade(sin6_addr, 1))
	476	croak("Wide character in %s", "Socket::pack_sockaddr_in6");
	477	addrbytes = SvPVbyte(sin6_addr, addrlen);
	478	if(addrlen != sizeof(sin6.sin6_addr))
	479	croak("Bad arg length %s, length is %d, should be %d",
	480	"Socket::pack_sockaddr_in6", addrlen, sizeof(sin6.sin6_addr));
	481	Zero(&sin6, sizeof(sin6), char);
	482	sin6.sin6_family = AF_INET6;
	483	sin6.sin6_port = htons(port);
	484	sin6.sin6_flowinfo = htonl(flowinfo);
	485	Copy(addrbytes, &sin6.sin6_addr, sizeof(sin6.sin6_addr), char);
8b079db6	486	#if !defined(__GLIBC__) \|\| (__GLIBC__ > 2) \|\| (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3)
9987e04d	487	sin6.sin6_scope_id = scope_id;
8b079db6	488	#endif
5897b17c PLE	489	# ifdef HAS_SOCKADDR_SA_LEN
	490	sin6.sin6_len = sizeof(sin6);
	491	# endif
9987e04d PLE	492	ST(0) = newSVpvn_flags((char *)&sin6, sizeof(sin6), SVs_TEMP);
	493	#else
	494	ST(0) = (SV*)not_here("pack_sockaddr_in6");
	495	#endif
	496	}
	497
	498	void
	499	unpack_sockaddr_in6(sin6_sv)
	500	SV * sin6_sv
	501	PPCODE:
	502	{
	503	#ifdef AF_INET6
	504	STRLEN addrlen;
	505	struct sockaddr_in6 sin6;
	506	char * addrbytes = SvPVbyte(sin6_sv, addrlen);
	507	if (addrlen != sizeof(sin6))
	508	croak("Bad arg length for %s, length is %d, should be %d",
	509	"Socket::unpack_sockaddr_in6",
	510	addrlen, sizeof(sin6));
	511	Copy(addrbytes, &sin6, sizeof(sin6), char);
	512	if(sin6.sin6_family != AF_INET6)
	513	croak("Bad address family for %s, got %d, should be %d",
	514	"Socket::unpack_sockaddr_in6",
	515	sin6.sin6_family, AF_INET6);
	516	EXTEND(SP, 4);
	517	mPUSHi(ntohs(sin6.sin6_port));
	518	mPUSHp((char *)&sin6.sin6_addr, sizeof(sin6.sin6_addr));
8b079db6	519	#if !defined(__GLIBC__) \|\| (__GLIBC__ > 2) \|\| (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3)
9987e04d	520	mPUSHi(sin6.sin6_scope_id);
8b079db6 DL	521	#else
	522	mPUSHi(0);
	523	#endif
9987e04d PLE	524	mPUSHi(ntohl(sin6.sin6_flowinfo));
	525	#else
	526	ST(0) = (SV*)not_here("pack_sockaddr_in6");
	527	#endif
	528	}
	529
	530	void
036d8bd4 SP	531	inet_ntop(af, ip_address_sv)
	532	int af
	533	SV * ip_address_sv
	534	CODE:
	535	#ifdef HAS_INETNTOP
	536	STRLEN addrlen, struct_size;
a5addb16	537	#ifdef AF_INET6
036d8bd4 SP	538	struct in6_addr addr;
036d8bd4 SP	539	char str[INET6_ADDRSTRLEN];
a5addb16 PG	540	#else
	541	struct in_addr addr;
	542	char str[INET_ADDRSTRLEN];
	543	#endif
036d8bd4 SP	544	char *ip_address = SvPV(ip_address_sv, addrlen);
036d8bd4 SP	545
a5addb16 PG	546	struct_size = sizeof(addr);
	547
	548	if(af != AF_INET
	549	#ifdef AF_INET6
	550	&& af != AF_INET6
	551	#endif
	552	) {
	553	croak("Bad address family for %s, got %d, should be"
	554	#ifdef AF_INET6
	555	" either AF_INET or AF_INET6",
	556	#else
	557	" AF_INET",
	558	#endif
bc354c70	559	"Socket::inet_ntop",
036d8bd4 SP	560	af);
	561	}
	562
	563	Copy( ip_address, &addr, sizeof addr, char );
a5addb16	564	inet_ntop(af, &addr, str, sizeof str);
036d8bd4	565
d3d34884	566	ST(0) = newSVpvn_flags(str, strlen(str), SVs_TEMP);
036d8bd4 SP	567	#else
	568	ST(0) = (SV *)not_here("inet_ntop");
	569	#endif
	570
	571	void
	572	inet_pton(af, host)
	573	int af
	574	const char * host
	575	CODE:
	576	#ifdef HAS_INETPTON
5a8cf367	577	int ok;
a5addb16 PG	578	#ifdef AF_INET6
	579	struct in6_addr ip_address;
	580	#else
	581	struct in_addr ip_address;
	582	#endif
	583
	584	if(af != AF_INET
	585	#ifdef AF_INET6
	586	&& af != AF_INET6
	587	#endif
	588	) {
	589	croak("Bad address family for %s, got %d, should be"
	590	#ifdef AF_INET6
	591	" either AF_INET or AF_INET6",
	592	#else
	593	" AF_INET",
	594	#endif
036d8bd4 SP	595	"Socket::inet_pton",
	596	af);
	597	}
5a8cf367	598	ok = (*host != '\0') && inet_pton(af, host, &ip_address);
036d8bd4 SP	599
	600	ST(0) = sv_newmortal();
	601	if (ok) {
a5addb16	602	sv_setpvn( ST(0), (char *)&ip_address, sizeof(ip_address) );
036d8bd4 SP	603	}
	604	#else
	605	ST(0) = (SV *)not_here("inet_pton");
	606	#endif