/
socket.c
2359 lines (2117 loc) · 51.7 KB
/
socket.c
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/************************************************
socket.c -
$Author$
$Date$
created at: Thu Mar 31 12:21:29 JST 1994
Copyright (C) 1993-2000 Yukihiro Matsumoto
************************************************/
#include "ruby.h"
#include "rubyio.h"
#include "rubysig.h"
#include <stdio.h>
#include <sys/types.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifndef NT
#include <sys/socket.h>
#include <netinet/in.h>
#ifdef HAVE_NETINET_TCP_H
# include <netinet/tcp.h>
#endif
#ifdef HAVE_NETINET_UDP_H
# include <netinet/udp.h>
#endif
#include <netdb.h>
#endif
#include <errno.h>
#ifdef HAVE_SYS_UN_H
#include <sys/un.h>
#endif
#if defined(HAVE_FCNTL)
#ifdef HAVE_SYS_SELECT_H
#include <sys/select.h>
#endif
#include <sys/types.h>
#include <sys/time.h>
#include <fcntl.h>
#endif
#ifndef EWOULDBLOCK
#define EWOULDBLOCK EAGAIN
#endif
#ifndef HAVE_GETADDRINFO
# include "addrinfo.h"
#endif
#include "sockport.h"
static int do_not_reverse_lookup = 0;
VALUE rb_cBasicSocket;
VALUE rb_cIPSocket;
VALUE rb_cTCPSocket;
VALUE rb_cTCPServer;
VALUE rb_cUDPSocket;
#ifdef AF_UNIX
VALUE rb_cUNIXSocket;
VALUE rb_cUNIXServer;
#endif
VALUE rb_cSocket;
static VALUE rb_eSocket;
#ifdef SOCKS
VALUE rb_cSOCKSSocket;
#ifdef SOCKS5
#include <socks.h>
#else
void SOCKSinit();
int Rconnect();
#endif
#endif
#define INET_CLIENT 0
#define INET_SERVER 1
#define INET_SOCKS 2
#ifndef HAVE_SOCKADDR_STORAGE
/*
* RFC 2553: protocol-independent placeholder for socket addresses
*/
#define _SS_MAXSIZE 128
#define _SS_ALIGNSIZE (sizeof(double))
#define _SS_PAD1SIZE (_SS_ALIGNSIZE - sizeof(unsigned char) * 2)
#define _SS_PAD2SIZE (_SS_MAXSIZE - sizeof(unsigned char) * 2 - \
_SS_PAD1SIZE - _SS_ALIGNSIZE)
struct sockaddr_storage {
#ifdef HAVE_SA_LEN
unsigned char ss_len; /* address length */
unsigned char ss_family; /* address family */
#else
unsigned short ss_family;
#endif
char __ss_pad1[_SS_PAD1SIZE];
double __ss_align; /* force desired structure storage alignment */
char __ss_pad2[_SS_PAD2SIZE];
};
#endif
#if defined(INET6) && (defined(LOOKUP_ORDER_HACK_INET) || defined(LOOKUP_ORDER_HACK_INET6))
#define LOOKUP_ORDERS 3
static int lookup_order_table[LOOKUP_ORDERS] = {
#if defined(LOOKUP_ORDER_HACK_INET)
PF_INET, PF_INET6, PF_UNSPEC,
#elif defined(LOOKUP_ORDER_HACK_INET6)
PF_INET6, PF_INET, PF_UNSPEC,
#else
/* should not happen */
#endif
};
static int
rb_getaddrinfo(nodename, servname, hints, res)
char *nodename;
char *servname;
struct addrinfo *hints;
struct addrinfo **res;
{
struct addrinfo tmp_hints;
int i, af, error;
if (hints->ai_family != PF_UNSPEC) {
return getaddrinfo(nodename, servname, hints, res);
}
for (i = 0; i < LOOKUP_ORDERS; i++) {
af = lookup_order_table[i];
MEMCPY(&tmp_hints, hints, struct addrinfo, 1);
tmp_hints.ai_family = af;
error = getaddrinfo(nodename, servname, &tmp_hints, res);
if (error) {
if (tmp_hints.ai_family == PF_UNSPEC) {
break;
}
}
else {
break;
}
}
return error;
}
#define getaddrinfo(node,serv,hints,res) rb_getaddrinfo((node),(serv),(hints),(res))
#endif
#ifdef NT
static void
sock_finalize(fptr)
OpenFile *fptr;
{
SOCKET s;
if (!fptr->f) return;
s = get_osfhandle(fileno(fptr->f));
myfdclose(fptr->f);
if (fptr->f2) myfdclose(fptr->f2);
closesocket(s);
}
#endif
static VALUE
sock_new(class, fd)
VALUE class;
int fd;
{
OpenFile *fp;
NEWOBJ(sock, struct RFile);
OBJSETUP(sock, class, T_FILE);
MakeOpenFile(sock, fp);
fp->f = rb_fdopen(fd, "r");
#ifdef NT
fp->finalize = sock_finalize;
#else
fd = dup(fd);
#endif
fp->f2 = rb_fdopen(fd, "w");
fp->mode = FMODE_READWRITE;
rb_io_synchronized(fp);
return (VALUE)sock;
}
static VALUE
bsock_shutdown(argc, argv, sock)
int argc;
VALUE *argv;
VALUE sock;
{
VALUE howto;
int how;
OpenFile *fptr;
if (rb_safe_level() >= 4 && !OBJ_TAINTED(sock)) {
rb_raise(rb_eSecurityError, "Insecure: can't shutdown socket");
}
rb_scan_args(argc, argv, "01", &howto);
if (howto == Qnil)
how = 2;
else {
how = NUM2INT(howto);
if (how < 0 || 2 < how) {
rb_raise(rb_eArgError, "`how' should be either 0, 1, 2");
}
}
GetOpenFile(sock, fptr);
if (shutdown(fileno(fptr->f), how) == -1)
rb_sys_fail(0);
return INT2FIX(0);
}
static VALUE
bsock_close_read(sock)
VALUE sock;
{
OpenFile *fptr;
if (rb_safe_level() >= 4 && !OBJ_TAINTED(sock)) {
rb_raise(rb_eSecurityError, "Insecure: can't close socket");
}
GetOpenFile(sock, fptr);
shutdown(fileno(fptr->f), 0);
if (fptr->f2 == 0) {
return rb_io_close(sock);
}
rb_thread_fd_close(fileno(fptr->f));
fptr->mode &= ~FMODE_READABLE;
#ifdef NT
myfdclose(fptr->f);
#else
fclose(fptr->f);
#endif
fptr->f = fptr->f2;
fptr->f2 = 0;
return Qnil;
}
static VALUE
bsock_close_write(sock)
VALUE sock;
{
OpenFile *fptr;
if (rb_safe_level() >= 4 && !OBJ_TAINTED(sock)) {
rb_raise(rb_eSecurityError, "Insecure: can't close socket");
}
GetOpenFile(sock, fptr);
if (fptr->f2 == 0) {
return rb_io_close(sock);
}
shutdown(fileno(fptr->f2), 1);
fptr->mode &= ~FMODE_WRITABLE;
#ifdef NT
myfdclose(fptr->f2);
#else
fclose(fptr->f2);
#endif
fptr->f2 = 0;
return Qnil;
}
static VALUE
bsock_setsockopt(sock, lev, optname, val)
VALUE sock, lev, optname, val;
{
int level, option;
OpenFile *fptr;
int i;
char *v;
int vlen;
rb_secure(2);
level = NUM2INT(lev);
option = NUM2INT(optname);
switch (TYPE(val)) {
case T_FIXNUM:
i = FIX2INT(val);
goto numval;
case T_FALSE:
i = 0;
goto numval;
case T_TRUE:
i = 1;
numval:
v = (char*)&i; vlen = sizeof(i);
break;
default:
v = rb_str2cstr(val, &vlen);
}
GetOpenFile(sock, fptr);
if (setsockopt(fileno(fptr->f), level, option, v, vlen) < 0)
rb_sys_fail(fptr->path);
return INT2FIX(0);
}
static VALUE
bsock_getsockopt(sock, lev, optname)
VALUE sock, lev, optname;
{
#if !defined(__BEOS__)
int level, option;
socklen_t len;
char *buf;
OpenFile *fptr;
level = NUM2INT(lev);
option = NUM2INT(optname);
len = 256;
buf = ALLOCA_N(char,len);
GetOpenFile(sock, fptr);
if (getsockopt(fileno(fptr->f), level, option, buf, &len) < 0)
rb_sys_fail(fptr->path);
return rb_tainted_str_new(buf, len);
#else
rb_notimplement();
#endif
}
static VALUE
bsock_getsockname(sock)
VALUE sock;
{
char buf[1024];
socklen_t len = sizeof buf;
OpenFile *fptr;
GetOpenFile(sock, fptr);
if (getsockname(fileno(fptr->f), (struct sockaddr*)buf, &len) < 0)
rb_sys_fail("getsockname(2)");
return rb_tainted_str_new(buf, len);
}
static VALUE
bsock_getpeername(sock)
VALUE sock;
{
char buf[1024];
socklen_t len = sizeof buf;
OpenFile *fptr;
GetOpenFile(sock, fptr);
if (getpeername(fileno(fptr->f), (struct sockaddr*)buf, &len) < 0)
rb_sys_fail("getpeername(2)");
return rb_tainted_str_new(buf, len);
}
static VALUE
bsock_send(argc, argv, sock)
int argc;
VALUE *argv;
VALUE sock;
{
VALUE msg, to;
VALUE flags;
OpenFile *fptr;
FILE *f;
int fd, n;
char *m, *t;
int mlen, tlen;
rb_secure(4);
rb_scan_args(argc, argv, "21", &msg, &flags, &to);
GetOpenFile(sock, fptr);
f = GetWriteFile(fptr);
fd = fileno(f);
retry:
rb_thread_fd_writable(fd);
m = rb_str2cstr(msg, &mlen);
if (!NIL_P(to)) {
t = rb_str2cstr(to, &tlen);
n = sendto(fd, m, mlen, NUM2INT(flags),
(struct sockaddr*)t, tlen);
}
else {
n = send(fd, m, mlen, NUM2INT(flags));
}
if (n < 0) {
switch (errno) {
case EINTR:
rb_thread_schedule();
goto retry;
case EWOULDBLOCK:
#if EAGAIN != EWOULDBLOCK
case EAGAIN:
#endif
rb_thread_fd_writable(fd);
goto retry;
}
rb_sys_fail("send(2)");
}
return INT2FIX(n);
}
static VALUE ipaddr _((struct sockaddr *));
#ifdef HAVE_SYS_UN_H
static VALUE unixaddr _((struct sockaddr_un *));
#endif
enum sock_recv_type {
RECV_RECV, /* BasicSocket#recv(no from) */
RECV_IP, /* IPSocket#recvfrom */
RECV_UNIX, /* UNIXSocket#recvfrom */
RECV_SOCKET, /* Socket#recvfrom */
};
static VALUE
s_recvfrom(sock, argc, argv, from)
VALUE sock;
int argc;
VALUE *argv;
enum sock_recv_type from;
{
OpenFile *fptr;
VALUE str;
char buf[1024];
socklen_t alen = sizeof buf;
VALUE len, flg;
int fd, flags;
rb_scan_args(argc, argv, "11", &len, &flg);
if (flg == Qnil) flags = 0;
else flags = NUM2INT(flg);
GetOpenFile(sock, fptr);
if (rb_read_pending(fptr->f)) {
rb_raise(rb_eIOError, "recv for buffered IO");
}
fd = fileno(fptr->f);
str = rb_tainted_str_new(0, NUM2INT(len));
rb_thread_wait_fd(fd);
retry:
TRAP_BEG;
RSTRING(str)->len = recvfrom(fd, RSTRING(str)->ptr, RSTRING(str)->len, flags,
(struct sockaddr*)buf, &alen);
TRAP_END;
if (RSTRING(str)->len < 0) {
switch (errno) {
case EINTR:
rb_thread_schedule();
goto retry;
case EWOULDBLOCK:
#if EAGAIN != EWOULDBLOCK
case EAGAIN:
#endif
rb_thread_wait_fd(fd);
goto retry;
}
rb_sys_fail("recvfrom(2)");
}
rb_obj_taint(str);
switch (from) {
case RECV_RECV:
return (VALUE)str;
case RECV_IP:
#if 0
if (alen != sizeof(struct sockaddr_in)) {
rb_raise(rb_eTypeError, "sockaddr size differs - should not happen");
}
#endif
return rb_assoc_new(str, ipaddr((struct sockaddr *)buf));
#ifdef HAVE_SYS_UN_H
case RECV_UNIX:
return rb_assoc_new(str, unixaddr((struct sockaddr_un *)buf));
#endif
case RECV_SOCKET:
return rb_assoc_new(str, rb_tainted_str_new(buf, alen));
}
}
static VALUE
bsock_recv(argc, argv, sock)
int argc;
VALUE *argv;
VALUE sock;
{
return s_recvfrom(sock, argc, argv, RECV_RECV);
}
static VALUE
bsock_do_not_rev_lookup()
{
return do_not_reverse_lookup?Qtrue:Qfalse;
}
static VALUE
bsock_do_not_rev_lookup_set(self, val)
{
do_not_reverse_lookup = RTEST(val);
return val;
}
static void
mkipaddr0(addr, buf, len)
struct sockaddr *addr;
char *buf;
size_t len;
{
int error;
error = getnameinfo(addr, SA_LEN(addr), buf, len, NULL, 0, NI_NUMERICHOST);
if (error) {
rb_raise(rb_eSocket, "getnameinfo: %s", gai_strerror(error));
}
}
static VALUE
mkipaddr(addr)
struct sockaddr *addr;
{
char buf[1024];
mkipaddr0(addr, buf, sizeof(buf));
return rb_tainted_str_new2(buf);
}
static void
mkinetaddr(host, buf, len)
long host;
char *buf;
size_t len;
{
struct sockaddr_in sin;
MEMZERO(&sin, struct sockaddr_in, 1);
sin.sin_family = AF_INET;
SET_SIN_LEN(&sin, sizeof(sin));
sin.sin_addr.s_addr = host;
mkipaddr0((struct sockaddr *)&sin, buf, len);
}
static struct addrinfo*
ip_addrsetup(host, port)
VALUE host, port;
{
struct addrinfo hints, *res;
char *hostp, *portp;
int error;
char hbuf[1024], pbuf[16];
if (NIL_P(host)) {
hostp = NULL;
}
else if (rb_obj_is_kind_of(host, rb_cInteger)) {
long i = NUM2LONG(host);
mkinetaddr(htonl(i), hbuf, sizeof(hbuf));
hostp = hbuf;
}
else {
char *name;
Check_SafeStr(host);
name = RSTRING(host)->ptr;
if (*name == 0) {
mkinetaddr(INADDR_ANY, hbuf, sizeof(hbuf));
}
else if (name[0] == '<' && strcmp(name, "<broadcast>") == 0) {
mkinetaddr(INADDR_BROADCAST, hbuf, sizeof(hbuf));
}
else if (strlen(name) >= sizeof(hbuf)) {
rb_raise(rb_eArgError, "hostname too long (%d)", strlen(name));
}
else {
strcpy(hbuf, name);
}
hostp = hbuf;
}
if (NIL_P(port)) {
portp = 0;
}
else if (FIXNUM_P(port)) {
snprintf(pbuf, sizeof(pbuf), "%ld", FIX2INT(port));
portp = pbuf;
}
else {
Check_SafeStr(port);
portp = STR2CSTR(port);
}
MEMZERO(&hints, struct addrinfo, 1);
hints.ai_family = PF_UNSPEC;
hints.ai_socktype = SOCK_DGRAM;
error = getaddrinfo(hostp, portp, &hints, &res);
if (error) {
if (hostp && hostp[strlen(hostp)-1] == '\n') {
rb_raise(rb_eSocket, "newline at the end of hostname");
}
rb_raise(rb_eSocket, "getaddrinfo: %s", gai_strerror(error));
}
return res;
}
static void
setipaddr(name, addr)
VALUE name;
struct sockaddr *addr;
{
struct addrinfo *res = ip_addrsetup(name, Qnil);
/* just take the first one */
memcpy(addr, res->ai_addr, res->ai_addrlen);
freeaddrinfo(res);
}
static VALUE
ipaddr(sockaddr)
struct sockaddr *sockaddr;
{
VALUE family, port, addr1, addr2;
VALUE ary;
int error;
char hbuf[1024], pbuf[1024];
switch (sockaddr->sa_family) {
case AF_UNSPEC:
family = rb_str_new2("AF_UNSPEC");
break;
case AF_INET:
family = rb_str_new2("AF_INET");
break;
#ifdef INET6
case AF_INET6:
family = rb_str_new2("AF_INET6");
break;
#endif
#ifdef AF_LOCAL
case AF_LOCAL:
family = rb_str_new2("AF_LOCAL");
break;
#elif AF_UNIX
case AF_UNIX:
family = rb_str_new2("AF_UNIX");
break;
#endif
default:
sprintf(pbuf, "unknown:%d", sockaddr->sa_family);
family = rb_str_new2(pbuf);
break;
}
if (!do_not_reverse_lookup) {
error = getnameinfo(sockaddr, SA_LEN(sockaddr), hbuf, sizeof(hbuf),
NULL, 0, 0);
if (error) {
rb_raise(rb_eSocket, "getnameinfo: %s", gai_strerror(error));
}
addr1 = rb_tainted_str_new2(hbuf);
}
error = getnameinfo(sockaddr, SA_LEN(sockaddr), hbuf, sizeof(hbuf),
pbuf, sizeof(pbuf), NI_NUMERICHOST | NI_NUMERICSERV);
if (error) {
rb_raise(rb_eSocket, "getnameinfo %s", gai_strerror(error));
}
addr2 = rb_tainted_str_new2(hbuf);
if (do_not_reverse_lookup) {
addr1 = addr2;
}
port = INT2FIX(atoi(pbuf));
ary = rb_ary_new3(4, family, port, addr1, addr2);
return ary;
}
static int
ruby_socket(domain, type, proto)
int domain, type, proto;
{
int fd;
fd = socket(domain, type, proto);
if (fd < 0) {
if (errno == EMFILE || errno == ENFILE) {
rb_gc();
fd = socket(domain, type, proto);
}
}
return fd;
}
static void
thread_write_select(fd)
int fd;
{
fd_set fds;
FD_ZERO(&fds);
FD_SET(fd, &fds);
rb_thread_select(fd+1, 0, &fds, 0, 0);
}
static int
ruby_connect(fd, sockaddr, len, socks)
int fd;
struct sockaddr *sockaddr;
int len;
int socks;
{
int status;
int mode;
#if defined(HAVE_FCNTL)
mode = fcntl(fd, F_GETFL, 0);
#ifdef O_NDELAY
# define NONBLOCKING O_NDELAY
#else
#ifdef O_NBIO
# define NONBLOCKING O_NBIO
#else
# define NONBLOCKING O_NONBLOCK
#endif
#endif
#ifdef SOCKS5
if (!socks)
#endif
fcntl(fd, F_SETFL, mode|NONBLOCKING);
#endif /* HAVE_FCNTL */
for (;;) {
#if defined(SOCKS) && !defined(SOCKS5)
if (socks) {
status = Rconnect(fd, sockaddr, len);
}
else
#endif
{
status = connect(fd, sockaddr, len);
}
if (status < 0) {
switch (errno) {
case EAGAIN:
#ifdef EINPROGRESS
case EINPROGRESS:
#endif
thread_write_select(fd);
continue;
#ifdef EISCONN
case EISCONN:
status = 0;
errno = 0;
break;
#endif
}
}
#ifdef HAVE_FCNTL
mode &= ~NONBLOCKING;
fcntl(fd, F_SETFL, mode);
#endif
return status;
}
}
static VALUE
open_inet(class, h, serv, type)
VALUE class, h, serv;
int type;
{
struct addrinfo hints, *res, *res0;
int fd, status;
char *syscall;
char pbuf[1024], *portp;
char *host;
int error;
if (h) {
Check_SafeStr(h);
host = RSTRING(h)->ptr;
}
else {
host = NULL;
}
if (FIXNUM_P(serv)) {
snprintf(pbuf, sizeof(pbuf), "%ld", FIX2UINT(serv));
portp = pbuf;
}
else {
Check_SafeStr(serv);
if (RSTRING(serv)->len >= sizeof(pbuf))
rb_raise(rb_eArgError, "servicename too long (%d)", RSTRING(serv)->len);
strcpy(pbuf, RSTRING(serv)->ptr);
portp = pbuf;
}
MEMZERO(&hints, struct addrinfo, 1);
hints.ai_family = PF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
if (type == INET_SERVER) {
hints.ai_flags = AI_PASSIVE;
}
error = getaddrinfo(host, portp, &hints, &res0);
if (error) {
rb_raise(rb_eSocket, "getaddrinfo: %s", gai_strerror(error));
}
fd = -1;
for (res = res0; res; res = res->ai_next) {
status = ruby_socket(res->ai_family,res->ai_socktype,res->ai_protocol);
syscall = "socket(2)";
fd = status;
if (fd < 0) {
continue;
}
if (type == INET_SERVER) {
status = 1;
setsockopt(fd, SOL_SOCKET, SO_REUSEADDR,
(char*)&status, sizeof(status));
status = bind(fd, res->ai_addr, res->ai_addrlen);
syscall = "bind(2)";
}
else {
status = ruby_connect(fd, res->ai_addr, res->ai_addrlen,
(type == INET_SOCKS));
syscall = "connect(2)";
}
if (status < 0) {
#if defined(HAVE_CLOSESOCKET)
closesocket(fd);
#else
close(fd);
#endif
fd = -1;
continue;
} else
break;
}
if (status < 0) {
if (fd >= 0)
#if defined(HAVE_CLOSESOCKET)
closesocket(fd);
#else
close(fd);
#endif
freeaddrinfo(res0);
rb_sys_fail(syscall);
}
if (type == INET_SERVER)
listen(fd, 5);
/* create new instance */
freeaddrinfo(res0);
return sock_new(class, fd);
}
static VALUE
tcp_s_open(class, host, serv)
VALUE class, host, serv;
{
Check_SafeStr(host);
return open_inet(class, host, serv, INET_CLIENT);
}
#ifdef SOCKS
static VALUE
socks_s_open(class, host, serv)
VALUE class, host, serv;
{
static init = 0;
if (init == 0) {
SOCKSinit("ruby");
init = 1;
}
Check_SafeStr(host);
return open_inet(class, host, serv, INET_SOCKS);
}
#ifdef SOCKS5
static VALUE
socks_s_close(sock)
VALUE sock;
{
OpenFile *fptr;
if (rb_safe_level() >= 4 && !OBJ_TAINTED(sock)) {
rb_raise(rb_eSecurityError, "Insecure: can't close socket");
}
GetOpenFile(sock, fptr);
shutdown(fileno(fptr->f), 2);
shutdown(fileno(fptr->f2), 2);
return rb_io_close(sock);
}
#endif
#endif
/*
* NOTE: using gethostbyname() against AF_INET6 is a bad idea, as it
* does not initialize sin_flowinfo nor sin_scope_id properly.
*/
static VALUE
tcp_s_gethostbyname(obj, host)
VALUE obj, host;
{
struct sockaddr_storage addr;
struct hostent *h;
char **pch;
VALUE ary, names;
rb_secure(3);
if (rb_obj_is_kind_of(host, rb_cInteger)) {
long i = NUM2LONG(host);
struct sockaddr_in *sin;
sin = (struct sockaddr_in *)&addr;
MEMZERO(sin, struct sockaddr_in, 1);
sin->sin_family = AF_INET;
SET_SIN_LEN(sin, sizeof(*sin));
sin->sin_addr.s_addr = htonl(i);
}
else {
setipaddr(host, &addr);
}
switch (addr.ss_family) {
case AF_INET:
{
struct sockaddr_in *sin;
sin = (struct sockaddr_in *)&addr;
h = gethostbyaddr((char *)&sin->sin_addr,
sizeof(sin->sin_addr),
sin->sin_family);
break;
}
#ifdef INET6
case AF_INET6:
{
struct sockaddr_in6 *sin6;
sin6 = (struct sockaddr_in6 *)&addr;
h = gethostbyaddr((char *)&sin6->sin6_addr,
sizeof(sin6->sin6_addr),
sin6->sin6_family);
break;
}
#endif
default:
h = NULL;
}
if (h == NULL) {
#ifdef HAVE_HSTERROR
extern int h_errno;
rb_raise(rb_eSocket, "%s", (char *)hsterror(h_errno));
#else
rb_raise(rb_eSocket, "host not found");
#endif
}
ary = rb_ary_new();
rb_ary_push(ary, rb_tainted_str_new2(h->h_name));
names = rb_ary_new();
rb_ary_push(ary, names);
for (pch = h->h_aliases; *pch; pch++) {
rb_ary_push(names, rb_tainted_str_new2(*pch));
}
rb_ary_push(ary, INT2NUM(h->h_addrtype));
#ifdef h_addr
for (pch = h->h_addr_list; *pch; pch++) {
switch (addr.ss_family) {
case AF_INET:
{
struct sockaddr_in sin;
MEMZERO(&sin, struct sockaddr_in, 1);
sin.sin_family = AF_INET;
SET_SIN_LEN(&sin, sizeof(sin));
memcpy((char *) &sin.sin_addr, *pch, h->h_length);
h = gethostbyaddr((char *)&sin.sin_addr,
sizeof(sin.sin_addr),
sin.sin_family);
rb_ary_push(ary, mkipaddr((struct sockaddr *)&sin));
break;
}
#ifdef INET6
case AF_INET6:
{
struct sockaddr_in6 sin6;
MEMZERO(&sin6, struct sockaddr_in6, 1);
sin6.sin6_family = AF_INET;
#ifdef SIN6_LEN
sin6.sin6_len = sizeof(sin6);
#endif