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raddrinfo.c
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raddrinfo.c
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/************************************************
raddrinfo.c -
created at: Thu Mar 31 12:21:29 JST 1994
Copyright (C) 1993-2007 Yukihiro Matsumoto
************************************************/
#include "rubysocket.h"
#if defined(INET6) && (defined(LOOKUP_ORDER_HACK_INET) || defined(LOOKUP_ORDER_HACK_INET6))
#define LOOKUP_ORDERS (sizeof(lookup_order_table) / sizeof(lookup_order_table[0]))
static const int lookup_order_table[] = {
#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
ruby_getaddrinfo(const char *nodename, const char *servname,
const 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) ruby_getaddrinfo((node),(serv),(hints),(res))
#endif
#if defined(_AIX)
static int
ruby_getaddrinfo__aix(const char *nodename, const char *servname,
const struct addrinfo *hints, struct addrinfo **res)
{
int error = getaddrinfo(nodename, servname, hints, res);
struct addrinfo *r;
if (error)
return error;
for (r = *res; r != NULL; r = r->ai_next) {
if (r->ai_addr->sa_family == 0)
r->ai_addr->sa_family = r->ai_family;
if (r->ai_addr->sa_len == 0)
r->ai_addr->sa_len = r->ai_addrlen;
}
return 0;
}
#undef getaddrinfo
#define getaddrinfo(node,serv,hints,res) ruby_getaddrinfo__aix((node),(serv),(hints),(res))
static int
ruby_getnameinfo__aix(const struct sockaddr *sa, size_t salen,
char *host, size_t hostlen,
char *serv, size_t servlen, int flags)
{
struct sockaddr_in6 *sa6;
u_int32_t *a6;
if (sa->sa_family == AF_INET6) {
sa6 = (struct sockaddr_in6 *)sa;
a6 = sa6->sin6_addr.u6_addr.u6_addr32;
if (a6[0] == 0 && a6[1] == 0 && a6[2] == 0 && a6[3] == 0) {
strncpy(host, "::", hostlen);
snprintf(serv, servlen, "%d", sa6->sin6_port);
return 0;
}
}
return getnameinfo(sa, salen, host, hostlen, serv, servlen, flags);
}
#undef getnameinfo
#define getnameinfo(sa, salen, host, hostlen, serv, servlen, flags) \
ruby_getnameinfo__aix((sa), (salen), (host), (hostlen), (serv), (servlen), (flags))
#endif
static int str_is_number(const char *);
#if defined(__APPLE__)
static int
ruby_getaddrinfo__darwin(const char *nodename, const char *servname,
const struct addrinfo *hints, struct addrinfo **res)
{
/* fix [ruby-core:29427] */
const char *tmp_servname;
struct addrinfo tmp_hints;
int error;
tmp_servname = servname;
MEMCPY(&tmp_hints, hints, struct addrinfo, 1);
if (nodename && servname) {
if (str_is_number(tmp_servname) && atoi(servname) == 0) {
tmp_servname = NULL;
#ifdef AI_NUMERICSERV
if (tmp_hints.ai_flags) tmp_hints.ai_flags &= ~AI_NUMERICSERV;
#endif
}
}
error = getaddrinfo(nodename, tmp_servname, &tmp_hints, res);
if (error == 0) {
/* [ruby-dev:23164] */
struct addrinfo *r;
r = *res;
while (r) {
if (! r->ai_socktype) r->ai_socktype = hints->ai_socktype;
if (! r->ai_protocol) {
if (r->ai_socktype == SOCK_DGRAM) {
r->ai_protocol = IPPROTO_UDP;
}
else if (r->ai_socktype == SOCK_STREAM) {
r->ai_protocol = IPPROTO_TCP;
}
}
r = r->ai_next;
}
}
return error;
}
#undef getaddrinfo
#define getaddrinfo(node,serv,hints,res) ruby_getaddrinfo__darwin((node),(serv),(hints),(res))
#endif
#ifdef HAVE_INET_PTON
static int
parse_numeric_port(const char *service, int *portp)
{
unsigned long u;
if (!service) {
*portp = 0;
return 1;
}
if (strspn(service, "0123456789") != strlen(service))
return 0;
errno = 0;
u = STRTOUL(service, NULL, 10);
if (errno)
return 0;
if (0x10000 <= u)
return 0;
*portp = (int)u;
return 1;
}
#endif
#ifndef GETADDRINFO_EMU
struct getaddrinfo_arg
{
const char *node;
const char *service;
const struct addrinfo *hints;
struct addrinfo **res;
};
static void *
nogvl_getaddrinfo(void *arg)
{
int ret;
struct getaddrinfo_arg *ptr = arg;
ret = getaddrinfo(ptr->node, ptr->service, ptr->hints, ptr->res);
#ifdef __linux__
/* On Linux (mainly Ubuntu 13.04) /etc/nsswitch.conf has mdns4 and
* it cause getaddrinfo to return EAI_SYSTEM/ENOENT. [ruby-list:49420]
*/
if (ret == EAI_SYSTEM && errno == ENOENT)
ret = EAI_NONAME;
#endif
return (void *)(VALUE)ret;
}
#endif
static int
numeric_getaddrinfo(const char *node, const char *service,
const struct addrinfo *hints,
struct addrinfo **res)
{
#ifdef HAVE_INET_PTON
# if defined __MINGW64__
# define inet_pton(f,s,d) rb_w32_inet_pton(f,s,d)
# endif
int port;
if (node && parse_numeric_port(service, &port)) {
static const struct {
int socktype;
int protocol;
} list[] = {
{ SOCK_STREAM, IPPROTO_TCP },
{ SOCK_DGRAM, IPPROTO_UDP },
{ SOCK_RAW, 0 }
};
struct addrinfo *ai = NULL;
int hint_family = hints ? hints->ai_family : PF_UNSPEC;
int hint_socktype = hints ? hints->ai_socktype : 0;
int hint_protocol = hints ? hints->ai_protocol : 0;
char ipv4addr[4];
#ifdef AF_INET6
char ipv6addr[16];
if ((hint_family == PF_UNSPEC || hint_family == PF_INET6) &&
strspn(node, "0123456789abcdefABCDEF.:") == strlen(node) &&
inet_pton(AF_INET6, node, ipv6addr)) {
int i;
for (i = numberof(list)-1; 0 <= i; i--) {
if ((hint_socktype == 0 || hint_socktype == list[i].socktype) &&
(hint_protocol == 0 || list[i].protocol == 0 || hint_protocol == list[i].protocol)) {
struct addrinfo *ai0 = xcalloc(1, sizeof(struct addrinfo));
struct sockaddr_in6 *sa = xmalloc(sizeof(struct sockaddr_in6));
INIT_SOCKADDR_IN6(sa, sizeof(struct sockaddr_in6));
memcpy(&sa->sin6_addr, ipv6addr, sizeof(ipv6addr));
sa->sin6_port = htons(port);
ai0->ai_family = PF_INET6;
ai0->ai_socktype = list[i].socktype;
ai0->ai_protocol = hint_protocol ? hint_protocol : list[i].protocol;
ai0->ai_addrlen = sizeof(struct sockaddr_in6);
ai0->ai_addr = (struct sockaddr *)sa;
ai0->ai_canonname = NULL;
ai0->ai_next = ai;
ai = ai0;
}
}
}
else
#endif
if ((hint_family == PF_UNSPEC || hint_family == PF_INET) &&
strspn(node, "0123456789.") == strlen(node) &&
inet_pton(AF_INET, node, ipv4addr)) {
int i;
for (i = numberof(list)-1; 0 <= i; i--) {
if ((hint_socktype == 0 || hint_socktype == list[i].socktype) &&
(hint_protocol == 0 || list[i].protocol == 0 || hint_protocol == list[i].protocol)) {
struct addrinfo *ai0 = xcalloc(1, sizeof(struct addrinfo));
struct sockaddr_in *sa = xmalloc(sizeof(struct sockaddr_in));
INIT_SOCKADDR_IN(sa, sizeof(struct sockaddr_in));
memcpy(&sa->sin_addr, ipv4addr, sizeof(ipv4addr));
sa->sin_port = htons(port);
ai0->ai_family = PF_INET;
ai0->ai_socktype = list[i].socktype;
ai0->ai_protocol = hint_protocol ? hint_protocol : list[i].protocol;
ai0->ai_addrlen = sizeof(struct sockaddr_in);
ai0->ai_addr = (struct sockaddr *)sa;
ai0->ai_canonname = NULL;
ai0->ai_next = ai;
ai = ai0;
}
}
}
if (ai) {
*res = ai;
return 0;
}
}
#endif
return EAI_FAIL;
}
int
rb_getaddrinfo(const char *node, const char *service,
const struct addrinfo *hints,
struct rb_addrinfo **res)
{
struct addrinfo *ai;
int ret;
int allocated_by_malloc = 0;
ret = numeric_getaddrinfo(node, service, hints, &ai);
if (ret == 0)
allocated_by_malloc = 1;
else {
#ifdef GETADDRINFO_EMU
ret = getaddrinfo(node, service, hints, &ai);
#else
struct getaddrinfo_arg arg;
MEMZERO(&arg, struct getaddrinfo_arg, 1);
arg.node = node;
arg.service = service;
arg.hints = hints;
arg.res = &ai;
ret = (int)(VALUE)rb_thread_call_without_gvl(nogvl_getaddrinfo, &arg, RUBY_UBF_IO, 0);
#endif
}
if (ret == 0) {
*res = (struct rb_addrinfo *)xmalloc(sizeof(struct rb_addrinfo));
(*res)->allocated_by_malloc = allocated_by_malloc;
(*res)->ai = ai;
}
return ret;
}
void
rb_freeaddrinfo(struct rb_addrinfo *ai)
{
if (!ai->allocated_by_malloc)
freeaddrinfo(ai->ai);
else {
struct addrinfo *ai1, *ai2;
ai1 = ai->ai;
while (ai1) {
ai2 = ai1->ai_next;
xfree(ai1->ai_addr);
xfree(ai1);
ai1 = ai2;
}
}
xfree(ai);
}
#ifndef GETADDRINFO_EMU
struct getnameinfo_arg
{
const struct sockaddr *sa;
socklen_t salen;
int flags;
char *host;
size_t hostlen;
char *serv;
size_t servlen;
};
static void *
nogvl_getnameinfo(void *arg)
{
struct getnameinfo_arg *ptr = arg;
return (void *)(VALUE)getnameinfo(ptr->sa, ptr->salen,
ptr->host, (socklen_t)ptr->hostlen,
ptr->serv, (socklen_t)ptr->servlen,
ptr->flags);
}
#endif
int
rb_getnameinfo(const struct sockaddr *sa, socklen_t salen,
char *host, size_t hostlen,
char *serv, size_t servlen, int flags)
{
#ifdef GETADDRINFO_EMU
return getnameinfo(sa, salen, host, hostlen, serv, servlen, flags);
#else
struct getnameinfo_arg arg;
int ret;
arg.sa = sa;
arg.salen = salen;
arg.host = host;
arg.hostlen = hostlen;
arg.serv = serv;
arg.servlen = servlen;
arg.flags = flags;
ret = (int)(VALUE)rb_thread_call_without_gvl(nogvl_getnameinfo, &arg, RUBY_UBF_IO, 0);
return ret;
#endif
}
static void
make_ipaddr0(struct sockaddr *addr, socklen_t addrlen, char *buf, size_t buflen)
{
int error;
error = rb_getnameinfo(addr, addrlen, buf, buflen, NULL, 0, NI_NUMERICHOST);
if (error) {
rsock_raise_socket_error("getnameinfo", error);
}
}
VALUE
rsock_make_ipaddr(struct sockaddr *addr, socklen_t addrlen)
{
char hbuf[1024];
make_ipaddr0(addr, addrlen, hbuf, sizeof(hbuf));
return rb_str_new2(hbuf);
}
static void
make_inetaddr(unsigned int host, char *buf, size_t buflen)
{
struct sockaddr_in sin;
INIT_SOCKADDR_IN(&sin, sizeof(sin));
sin.sin_addr.s_addr = host;
make_ipaddr0((struct sockaddr*)&sin, sizeof(sin), buf, buflen);
}
static int
str_is_number(const char *p)
{
char *ep;
if (!p || *p == '\0')
return 0;
ep = NULL;
(void)STRTOUL(p, &ep, 10);
if (ep && *ep == '\0')
return 1;
else
return 0;
}
#define str_equal(ptr, len, name) \
((ptr)[0] == name[0] && \
rb_strlen_lit(name) == (len) && memcmp(ptr, name, len) == 0)
#define SafeStringValueCStr(v) do {\
StringValueCStr(v);\
rb_check_safe_obj(v);\
} while(0)
static char*
host_str(VALUE host, char *hbuf, size_t hbuflen, int *flags_ptr)
{
if (NIL_P(host)) {
return NULL;
}
else if (rb_obj_is_kind_of(host, rb_cInteger)) {
unsigned int i = NUM2UINT(host);
make_inetaddr(htonl(i), hbuf, hbuflen);
if (flags_ptr) *flags_ptr |= AI_NUMERICHOST;
return hbuf;
}
else {
const char *name;
size_t len;
SafeStringValueCStr(host);
RSTRING_GETMEM(host, name, len);
if (!len || str_equal(name, len, "<any>")) {
make_inetaddr(INADDR_ANY, hbuf, hbuflen);
if (flags_ptr) *flags_ptr |= AI_NUMERICHOST;
}
else if (str_equal(name, len, "<broadcast>")) {
make_inetaddr(INADDR_BROADCAST, hbuf, hbuflen);
if (flags_ptr) *flags_ptr |= AI_NUMERICHOST;
}
else if (len >= hbuflen) {
rb_raise(rb_eArgError, "hostname too long (%"PRIuSIZE")",
len);
}
else {
memcpy(hbuf, name, len);
hbuf[len] = '\0';
}
return hbuf;
}
}
static char*
port_str(VALUE port, char *pbuf, size_t pbuflen, int *flags_ptr)
{
if (NIL_P(port)) {
return 0;
}
else if (FIXNUM_P(port)) {
snprintf(pbuf, pbuflen, "%ld", FIX2LONG(port));
#ifdef AI_NUMERICSERV
if (flags_ptr) *flags_ptr |= AI_NUMERICSERV;
#endif
return pbuf;
}
else {
const char *serv;
size_t len;
SafeStringValueCStr(port);
RSTRING_GETMEM(port, serv, len);
if (len >= pbuflen) {
rb_raise(rb_eArgError, "service name too long (%"PRIuSIZE")",
len);
}
memcpy(pbuf, serv, len);
pbuf[len] = '\0';
return pbuf;
}
}
struct rb_addrinfo*
rsock_getaddrinfo(VALUE host, VALUE port, struct addrinfo *hints, int socktype_hack)
{
struct rb_addrinfo* res = NULL;
char *hostp, *portp;
int error;
char hbuf[NI_MAXHOST], pbuf[NI_MAXSERV];
int additional_flags = 0;
hostp = host_str(host, hbuf, sizeof(hbuf), &additional_flags);
portp = port_str(port, pbuf, sizeof(pbuf), &additional_flags);
if (socktype_hack && hints->ai_socktype == 0 && str_is_number(portp)) {
hints->ai_socktype = SOCK_DGRAM;
}
hints->ai_flags |= additional_flags;
error = rb_getaddrinfo(hostp, portp, hints, &res);
if (error) {
if (hostp && hostp[strlen(hostp)-1] == '\n') {
rb_raise(rb_eSocket, "newline at the end of hostname");
}
rsock_raise_socket_error("getaddrinfo", error);
}
return res;
}
int
rsock_fd_family(int fd)
{
struct sockaddr sa = { 0 };
socklen_t sa_len = sizeof(sa);
if (fd < 0 || getsockname(fd, &sa, &sa_len) != 0 ||
(size_t)sa_len < offsetof(struct sockaddr, sa_family) + sizeof(sa.sa_family)) {
return AF_UNSPEC;
}
return sa.sa_family;
}
struct rb_addrinfo*
rsock_addrinfo(VALUE host, VALUE port, int family, int socktype, int flags)
{
struct addrinfo hints;
MEMZERO(&hints, struct addrinfo, 1);
hints.ai_family = family;
hints.ai_socktype = socktype;
hints.ai_flags = flags;
return rsock_getaddrinfo(host, port, &hints, 1);
}
VALUE
rsock_ipaddr(struct sockaddr *sockaddr, socklen_t sockaddrlen, int norevlookup)
{
VALUE family, port, addr1, addr2;
VALUE ary;
int error;
char hbuf[1024], pbuf[1024];
ID id;
id = rsock_intern_family(sockaddr->sa_family);
if (id) {
family = rb_str_dup(rb_id2str(id));
}
else {
sprintf(pbuf, "unknown:%d", sockaddr->sa_family);
family = rb_str_new2(pbuf);
}
addr1 = Qnil;
if (!norevlookup) {
error = rb_getnameinfo(sockaddr, sockaddrlen, hbuf, sizeof(hbuf),
NULL, 0, 0);
if (! error) {
addr1 = rb_str_new2(hbuf);
}
}
error = rb_getnameinfo(sockaddr, sockaddrlen, hbuf, sizeof(hbuf),
pbuf, sizeof(pbuf), NI_NUMERICHOST | NI_NUMERICSERV);
if (error) {
rsock_raise_socket_error("getnameinfo", error);
}
addr2 = rb_str_new2(hbuf);
if (addr1 == Qnil) {
addr1 = addr2;
}
port = INT2FIX(atoi(pbuf));
ary = rb_ary_new3(4, family, port, addr1, addr2);
return ary;
}
#ifdef HAVE_SYS_UN_H
static long
unixsocket_len(const struct sockaddr_un *su, socklen_t socklen)
{
const char *s = su->sun_path, *e = (const char*)su + socklen;
while (s < e && *(e-1) == '\0')
e--;
return e - s;
}
VALUE
rsock_unixpath_str(struct sockaddr_un *sockaddr, socklen_t len)
{
long n = unixsocket_len(sockaddr, len);
if (n >= 0)
return rb_str_new(sockaddr->sun_path, n);
else
return rb_str_new2("");
}
VALUE
rsock_unixaddr(struct sockaddr_un *sockaddr, socklen_t len)
{
return rb_assoc_new(rb_str_new2("AF_UNIX"),
rsock_unixpath_str(sockaddr, len));
}
socklen_t
rsock_unix_sockaddr_len(VALUE path)
{
#ifdef __linux__
if (RSTRING_LEN(path) == 0) {
/* autobind; see unix(7) for details. */
return (socklen_t) sizeof(sa_family_t);
}
else if (RSTRING_PTR(path)[0] == '\0') {
/* abstract namespace; see unix(7) for details. */
if (SOCKLEN_MAX - offsetof(struct sockaddr_un, sun_path) < (size_t)RSTRING_LEN(path))
rb_raise(rb_eArgError, "Linux abstract socket too long");
return (socklen_t) offsetof(struct sockaddr_un, sun_path) +
RSTRING_SOCKLEN(path);
}
else {
#endif
return (socklen_t) sizeof(struct sockaddr_un);
#ifdef __linux__
}
#endif
}
#endif
struct hostent_arg {
VALUE host;
struct rb_addrinfo* addr;
VALUE (*ipaddr)(struct sockaddr*, socklen_t);
};
static VALUE
make_hostent_internal(struct hostent_arg *arg)
{
VALUE host = arg->host;
struct addrinfo* addr = arg->addr->ai;
VALUE (*ipaddr)(struct sockaddr*, socklen_t) = arg->ipaddr;
struct addrinfo *ai;
struct hostent *h;
VALUE ary, names;
char **pch;
const char* hostp;
char hbuf[NI_MAXHOST];
ary = rb_ary_new();
if (addr->ai_canonname) {
hostp = addr->ai_canonname;
}
else {
hostp = host_str(host, hbuf, sizeof(hbuf), NULL);
}
rb_ary_push(ary, rb_str_new2(hostp));
if (addr->ai_canonname && strlen(addr->ai_canonname) < NI_MAXHOST &&
(h = gethostbyname(addr->ai_canonname))) {
names = rb_ary_new();
if (h->h_aliases != NULL) {
for (pch = h->h_aliases; *pch; pch++) {
rb_ary_push(names, rb_str_new2(*pch));
}
}
}
else {
names = rb_ary_new2(0);
}
rb_ary_push(ary, names);
rb_ary_push(ary, INT2NUM(addr->ai_family));
for (ai = addr; ai; ai = ai->ai_next) {
rb_ary_push(ary, (*ipaddr)(ai->ai_addr, ai->ai_addrlen));
}
return ary;
}
VALUE
rsock_freeaddrinfo(VALUE arg)
{
struct rb_addrinfo *addr = (struct rb_addrinfo *)arg;
rb_freeaddrinfo(addr);
return Qnil;
}
VALUE
rsock_make_hostent(VALUE host, struct rb_addrinfo *addr, VALUE (*ipaddr)(struct sockaddr *, socklen_t))
{
struct hostent_arg arg;
arg.host = host;
arg.addr = addr;
arg.ipaddr = ipaddr;
return rb_ensure(make_hostent_internal, (VALUE)&arg,
rsock_freeaddrinfo, (VALUE)addr);
}
typedef struct {
VALUE inspectname;
VALUE canonname;
int pfamily;
int socktype;
int protocol;
socklen_t sockaddr_len;
union_sockaddr addr;
} rb_addrinfo_t;
static void
addrinfo_mark(void *ptr)
{
rb_addrinfo_t *rai = ptr;
rb_gc_mark(rai->inspectname);
rb_gc_mark(rai->canonname);
}
#define addrinfo_free RUBY_TYPED_DEFAULT_FREE
static size_t
addrinfo_memsize(const void *ptr)
{
return sizeof(rb_addrinfo_t);
}
static const rb_data_type_t addrinfo_type = {
"socket/addrinfo",
{addrinfo_mark, addrinfo_free, addrinfo_memsize,},
};
static VALUE
addrinfo_s_allocate(VALUE klass)
{
return TypedData_Wrap_Struct(klass, &addrinfo_type, 0);
}
#define IS_ADDRINFO(obj) rb_typeddata_is_kind_of((obj), &addrinfo_type)
static inline rb_addrinfo_t *
check_addrinfo(VALUE self)
{
return rb_check_typeddata(self, &addrinfo_type);
}
static rb_addrinfo_t *
get_addrinfo(VALUE self)
{
rb_addrinfo_t *rai = check_addrinfo(self);
if (!rai) {
rb_raise(rb_eTypeError, "uninitialized socket address");
}
return rai;
}
static rb_addrinfo_t *
alloc_addrinfo(void)
{
rb_addrinfo_t *rai = ZALLOC(rb_addrinfo_t);
rai->inspectname = Qnil;
rai->canonname = Qnil;
return rai;
}
static void
init_addrinfo(rb_addrinfo_t *rai, struct sockaddr *sa, socklen_t len,
int pfamily, int socktype, int protocol,
VALUE canonname, VALUE inspectname)
{
if ((socklen_t)sizeof(rai->addr) < len)
rb_raise(rb_eArgError, "sockaddr string too big");
memcpy((void *)&rai->addr, (void *)sa, len);
rai->sockaddr_len = len;
rai->pfamily = pfamily;
rai->socktype = socktype;
rai->protocol = protocol;
rai->canonname = canonname;
rai->inspectname = inspectname;
}
VALUE
rsock_addrinfo_new(struct sockaddr *addr, socklen_t len,
int family, int socktype, int protocol,
VALUE canonname, VALUE inspectname)
{
VALUE a;
rb_addrinfo_t *rai;
a = addrinfo_s_allocate(rb_cAddrinfo);
DATA_PTR(a) = rai = alloc_addrinfo();
init_addrinfo(rai, addr, len, family, socktype, protocol, canonname, inspectname);
return a;
}
static struct rb_addrinfo *
call_getaddrinfo(VALUE node, VALUE service,
VALUE family, VALUE socktype, VALUE protocol, VALUE flags,
int socktype_hack)
{
struct addrinfo hints;
struct rb_addrinfo *res;
MEMZERO(&hints, struct addrinfo, 1);
hints.ai_family = NIL_P(family) ? PF_UNSPEC : rsock_family_arg(family);
if (!NIL_P(socktype)) {
hints.ai_socktype = rsock_socktype_arg(socktype);
}
if (!NIL_P(protocol)) {
hints.ai_protocol = NUM2INT(protocol);
}
if (!NIL_P(flags)) {
hints.ai_flags = NUM2INT(flags);
}
res = rsock_getaddrinfo(node, service, &hints, socktype_hack);
if (res == NULL)
rb_raise(rb_eSocket, "host not found");
return res;
}
static VALUE make_inspectname(VALUE node, VALUE service, struct addrinfo *res);
static void
init_addrinfo_getaddrinfo(rb_addrinfo_t *rai, VALUE node, VALUE service,
VALUE family, VALUE socktype, VALUE protocol, VALUE flags,
VALUE inspectnode, VALUE inspectservice)
{
struct rb_addrinfo *res = call_getaddrinfo(node, service, family, socktype, protocol, flags, 1);
VALUE canonname;
VALUE inspectname = rb_str_equal(node, inspectnode) ? Qnil : make_inspectname(inspectnode, inspectservice, res->ai);
canonname = Qnil;
if (res->ai->ai_canonname) {
canonname = rb_tainted_str_new_cstr(res->ai->ai_canonname);
OBJ_FREEZE(canonname);
}
init_addrinfo(rai, res->ai->ai_addr, res->ai->ai_addrlen,
NUM2INT(family), NUM2INT(socktype), NUM2INT(protocol),
canonname, inspectname);
rb_freeaddrinfo(res);
}
static VALUE
make_inspectname(VALUE node, VALUE service, struct addrinfo *res)
{
VALUE inspectname = Qnil;
if (res) {
/* drop redundant information which also shown in address:port part. */
char hbuf[NI_MAXHOST], pbuf[NI_MAXSERV];
int ret;
ret = rb_getnameinfo(res->ai_addr, res->ai_addrlen, hbuf,
sizeof(hbuf), pbuf, sizeof(pbuf),
NI_NUMERICHOST|NI_NUMERICSERV);
if (ret == 0) {
if (RB_TYPE_P(node, T_STRING) && strcmp(hbuf, RSTRING_PTR(node)) == 0)
node = Qnil;
if (RB_TYPE_P(service, T_STRING) && strcmp(pbuf, RSTRING_PTR(service)) == 0)
service = Qnil;
else if (RB_TYPE_P(service, T_FIXNUM) && atoi(pbuf) == FIX2INT(service))
service = Qnil;
}
}
if (RB_TYPE_P(node, T_STRING)) {
inspectname = rb_str_dup(node);
}
if (RB_TYPE_P(service, T_STRING)) {
if (NIL_P(inspectname))
inspectname = rb_sprintf(":%s", StringValueCStr(service));
else
rb_str_catf(inspectname, ":%s", StringValueCStr(service));
}
else if (RB_TYPE_P(service, T_FIXNUM) && FIX2INT(service) != 0)
{
if (NIL_P(inspectname))
inspectname = rb_sprintf(":%d", FIX2INT(service));
else
rb_str_catf(inspectname, ":%d", FIX2INT(service));
}
if (!NIL_P(inspectname)) {
OBJ_INFECT(inspectname, node);
OBJ_INFECT(inspectname, service);
OBJ_FREEZE(inspectname);
}
return inspectname;
}
static VALUE
addrinfo_firstonly_new(VALUE node, VALUE service, VALUE family, VALUE socktype, VALUE protocol, VALUE flags)
{
VALUE ret;
VALUE canonname;
VALUE inspectname;
struct rb_addrinfo *res = call_getaddrinfo(node, service, family, socktype, protocol, flags, 0);
inspectname = make_inspectname(node, service, res->ai);
canonname = Qnil;
if (res->ai->ai_canonname) {
canonname = rb_tainted_str_new_cstr(res->ai->ai_canonname);
OBJ_FREEZE(canonname);
}
ret = rsock_addrinfo_new(res->ai->ai_addr, res->ai->ai_addrlen,
res->ai->ai_family, res->ai->ai_socktype,
res->ai->ai_protocol,
canonname, inspectname);
rb_freeaddrinfo(res);
return ret;
}
static VALUE
addrinfo_list_new(VALUE node, VALUE service, VALUE family, VALUE socktype, VALUE protocol, VALUE flags)
{
VALUE ret;
struct addrinfo *r;
VALUE inspectname;
struct rb_addrinfo *res = call_getaddrinfo(node, service, family, socktype, protocol, flags, 0);
inspectname = make_inspectname(node, service, res->ai);
ret = rb_ary_new();
for (r = res->ai; r; r = r->ai_next) {
VALUE addr;
VALUE canonname = Qnil;
if (r->ai_canonname) {
canonname = rb_tainted_str_new_cstr(r->ai_canonname);
OBJ_FREEZE(canonname);
}
addr = rsock_addrinfo_new(r->ai_addr, r->ai_addrlen,
r->ai_family, r->ai_socktype, r->ai_protocol,
canonname, inspectname);
rb_ary_push(ret, addr);
}
rb_freeaddrinfo(res);
return ret;
}
#ifdef HAVE_SYS_UN_H
static void
init_unix_addrinfo(rb_addrinfo_t *rai, VALUE path, int socktype)
{
struct sockaddr_un un;
socklen_t len;
StringValue(path);
if (sizeof(un.sun_path) < (size_t)RSTRING_LEN(path))
rb_raise(rb_eArgError,
"too long unix socket path (%"PRIuSIZE" bytes given but %"PRIuSIZE" bytes max)",
(size_t)RSTRING_LEN(path), sizeof(un.sun_path));
INIT_SOCKADDR_UN(&un, sizeof(struct sockaddr_un));
memcpy((void*)&un.sun_path, RSTRING_PTR(path), RSTRING_LEN(path));
len = rsock_unix_sockaddr_len(path);
init_addrinfo(rai, (struct sockaddr *)&un, len,
PF_UNIX, socktype, 0, Qnil, Qnil);
}
static long
rai_unixsocket_len(const rb_addrinfo_t *rai)
{
return unixsocket_len(&rai->addr.un, rai->sockaddr_len);
}
#endif