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ruby--ruby/ext/socket/option.c
akr f871e8cf0d update rdoc. 
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@22226 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2009-02-11 04:29:12 +00:00

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#include "rubysocket.h"
VALUE rb_cSockOpt;
static VALUE
constant_to_sym(int constant, ID (*intern_const)(int))
{
ID name = intern_const(constant);
if (name) {
return ID2SYM(name);
}
return INT2NUM(constant);
}
static VALUE
optname_to_sym(int level, int optname)
{
switch (level) {
case SOL_SOCKET:
return constant_to_sym(optname, intern_so_optname);
case IPPROTO_IP:
return constant_to_sym(optname, intern_ip_optname);
#ifdef INET6
case IPPROTO_IPV6:
return constant_to_sym(optname, intern_ipv6_optname);
#endif
case IPPROTO_TCP:
return constant_to_sym(optname, intern_tcp_optname);
case IPPROTO_UDP:
return constant_to_sym(optname, intern_udp_optname);
default:
return INT2NUM(optname);
}
}
/*
* call-seq:
* Socket::Option.new(family, level, optname, data) => sockopt
*
* Returns a new Socket::Option object.
*
* sockopt = Socket::Option.new(:INET, :SOCKET, :KEEPALIVE, [1].pack("i"))
* p sockopt #=> #<Socket::Option: INET SOCKET KEEPALIVE 1>
*
*/
static VALUE
sockopt_initialize(VALUE self, VALUE vfamily, VALUE vlevel, VALUE voptname, VALUE data)
{
int family = family_arg(vfamily);
int level = level_arg(family, vlevel);
int optname = optname_arg(family, level, voptname);
StringValue(data);
rb_ivar_set(self, rb_intern("family"), INT2NUM(family));
rb_ivar_set(self, rb_intern("level"), INT2NUM(level));
rb_ivar_set(self, rb_intern("optname"), INT2NUM(optname));
rb_ivar_set(self, rb_intern("data"), data);
return self;
}
VALUE
sockopt_new(int family, int level, int optname, VALUE data)
{
NEWOBJ(obj, struct RObject);
OBJSETUP(obj, rb_cSockOpt, T_OBJECT);
StringValue(data);
sockopt_initialize((VALUE)obj, INT2NUM(family), INT2NUM(level), INT2NUM(optname), data);
return (VALUE)obj;
}
/*
* call-seq:
* sockopt.family => integer
*
* returns the socket family as an integer.
*
* p Socket::Option.new(:INET6, :IPV6, :RECVPKTINFO, [1].pack("i!")).family
* #=> 10
*/
static VALUE
sockopt_family_m(VALUE self)
{
return rb_attr_get(self, rb_intern("family"));
}
/*
* call-seq:
* sockopt.level => integer
*
* returns the socket level as an integer.
*
* p Socket::Option.new(:INET6, :IPV6, :RECVPKTINFO, [1].pack("i!")).level
* #=> 41
*/
static VALUE
sockopt_level_m(VALUE self)
{
return rb_attr_get(self, rb_intern("level"));
}
/*
* call-seq:
* sockopt.optname => integer
*
* returns the socket option name as an integer.
*
* p Socket::Option.new(:INET6, :IPV6, :RECVPKTINFO, [1].pack("i!")).optname
* #=> 2
*/
static VALUE
sockopt_optname_m(VALUE self)
{
return rb_attr_get(self, rb_intern("optname"));
}
/*
* call-seq:
* sockopt.data => string
*
* returns the socket option data as a string.
*
* p Socket::Option.new(:INET6, :IPV6, :RECVPKTINFO, [1].pack("i!")).data
* #=> "\x01\x00\x00\x00"
*/
static VALUE
sockopt_data(VALUE self)
{
return rb_attr_get(self, rb_intern("data"));
}
/*
* call-seq:
* Socket::Option.int(family, level, optname, integer) => sockopt
*
* Creates a new Socket::Option object which contains an int as data.
*
* The size and endian is dependent on the host.
*
* p Socket::Option.int(:INET, :SOCKET, :KEEPALIVE, 1)
* #=> #<Socket::Option: INET SOCKET KEEPALIVE 1>
*/
static VALUE
sockopt_s_int(VALUE klass, VALUE vfamily, VALUE vlevel, VALUE voptname, VALUE vint)
{
int family = family_arg(vfamily);
int level = level_arg(family, vlevel);
int optname = optname_arg(family, level, voptname);
int i = NUM2INT(vint);
return sockopt_new(family, level, optname, rb_str_new((char*)&i, sizeof(i)));
}
/*
* call-seq:
* sockopt.int => integer
*
* Returns the data in _sockopt_ as an int.
*
* The size and endian is dependent on the host.
*
* sockopt = Socket::Option.int(:INET, :SOCKET, :KEEPALIVE, 1)
* p sockopt.int => 1
*/
static VALUE
sockopt_int(VALUE self)
{
int i;
VALUE data = sockopt_data(self);
StringValue(data);
if (RSTRING_LEN(data) != sizeof(int))
rb_raise(rb_eTypeError, "size differ. expected as sizeof(int)=%d but %ld",
(int)sizeof(int), (long)RSTRING_LEN(data));
memcpy((char*)&i, RSTRING_PTR(data), sizeof(int));
return INT2NUM(i);
}
/*
* call-seq:
* Socket::Option.bool(family, level, optname, bool) => sockopt
*
* Creates a new Socket::Option object which contains boolean as data.
* Actually 0 or 1 as int is used.
*
* p Socket::Option.bool(:INET, :SOCKET, :KEEPALIVE, true)
* #=> #<Socket::Option: INET SOCKET KEEPALIVE 1>
*
* p Socket::Option.bool(:INET, :SOCKET, :KEEPALIVE, false)
* #=> #<Socket::Option: AF_INET SOCKET KEEPALIVE 0>
*
*/
static VALUE
sockopt_s_bool(VALUE klass, VALUE vfamily, VALUE vlevel, VALUE voptname, VALUE vbool)
{
int family = family_arg(vfamily);
int level = level_arg(family, vlevel);
int optname = optname_arg(family, level, voptname);
int i = RTEST(vbool) ? 1 : 0;
return sockopt_new(family, level, optname, rb_str_new((char*)&i, sizeof(i)));
}
/*
* call-seq:
* sockopt.bool => true or false
*
* Returns the data in _sockopt_ as an boolean value.
*
* sockopt = Socket::Option.int(:INET, :SOCKET, :KEEPALIVE, 1)
* p sockopt.bool => true
*/
static VALUE
sockopt_bool(VALUE self)
{
int i;
VALUE data = sockopt_data(self);
StringValue(data);
if (RSTRING_LEN(data) != sizeof(int))
rb_raise(rb_eTypeError, "size differ. expected as sizeof(int)=%d but %ld",
(int)sizeof(int), (long)RSTRING_LEN(data));
memcpy((char*)&i, RSTRING_PTR(data), sizeof(int));
return i == 0 ? Qfalse : Qtrue;
}
static int
inspect_int(int level, int optname, VALUE data, VALUE ret)
{
if (RSTRING_LEN(data) == sizeof(int)) {
int i;
memcpy((char*)&i, RSTRING_PTR(data), sizeof(int));
rb_str_catf(ret, " %d", i);
return 1;
}
else {
return 0;
}
}
static int
inspect_uint(int level, int optname, VALUE data, VALUE ret)
{
if (RSTRING_LEN(data) == sizeof(int)) {
unsigned int i;
memcpy((char*)&i, RSTRING_PTR(data), sizeof(unsigned int));
rb_str_catf(ret, " %u", i);
return 1;
}
else {
return 0;
}
}
#if defined(SOL_SOCKET) && defined(SO_LINGER) /* POSIX */
static int
inspect_linger(int level, int optname, VALUE data, VALUE ret)
{
if (RSTRING_LEN(data) == sizeof(struct linger)) {
struct linger s;
memcpy((char*)&s, RSTRING_PTR(data), sizeof(s));
rb_str_catf(ret, " onoff:%d linger:%d", s.l_onoff, s.l_linger);
return 1;
}
else {
return 0;
}
}
#endif
#if defined(SOL_SOCKET) && defined(SO_TYPE) /* POSIX */
static int
inspect_socktype(int level, int optname, VALUE data, VALUE ret)
{
if (RSTRING_LEN(data) == sizeof(int)) {
int i;
ID id;
memcpy((char*)&i, RSTRING_PTR(data), sizeof(int));
id = intern_socktype(i);
if (id)
rb_str_catf(ret, " %s", rb_id2name(id));
else
rb_str_catf(ret, " %d", i);
return 1;
}
else {
return 0;
}
}
#endif
static int
inspect_timeval(int level, int optname, VALUE data, VALUE ret)
{
if (RSTRING_LEN(data) == sizeof(struct linger)) {
struct timeval s;
memcpy((char*)&s, RSTRING_PTR(data), sizeof(s));
rb_str_catf(ret, " %ld.%06ldsec", (long)s.tv_sec, (long)s.tv_usec);
return 1;
}
else {
return 0;
}
}
#if defined(SOL_SOCKET) && defined(SO_PEERCRED) /* GNU/Linux */
static int
inspect_peercred(int level, int optname, VALUE data, VALUE ret)
{
if (RSTRING_LEN(data) == sizeof(struct ucred)) {
struct ucred cred;
memcpy(&cred, RSTRING_PTR(data), sizeof(struct ucred));
rb_str_catf(ret, " pid=%u euid=%u egid=%u", cred.pid, cred.uid, cred.gid);
rb_str_cat2(ret, " (ucred)");
return 1;
}
else {
return 0;
}
}
#endif
#if defined(LOCAL_PEERCRED) /* FreeBSD, MacOS X */
static int
inspect_local_peercred(int level, int optname, VALUE data, VALUE ret)
{
if (RSTRING_LEN(data) == sizeof(struct xucred)) {
struct xucred cred;
memcpy(&cred, RSTRING_PTR(data), sizeof(struct xucred));
if (cred.cr_version != XUCRED_VERSION)
return 0;
rb_str_catf(ret, " version=%u", cred.cr_version);
rb_str_catf(ret, " euid=%u", cred.cr_uid);
if (cred.cr_ngroups) {
int i;
const char *sep = " groups=";
for (i = 0; i < cred.cr_ngroups; i++) {
rb_str_catf(ret, "%s%u", sep, cred.cr_groups[i]);
sep = ",";
}
}
rb_str_cat2(ret, " (xucred)");
return 1;
}
else {
return 0;
}
}
#endif
/*
* call-seq:
* sockopt.inspect => string
*
* Returns a string which shows sockopt in human-readable form.
*
* p Socket::Option.new(:INET, :SOCKET, :KEEPALIVE, [1].pack("i")).inspect
* #=> "#<Socket::Option: INET SOCKET KEEPALIVE 1>"
*
*/
static VALUE
sockopt_inspect(VALUE self)
{
int family = NUM2INT(sockopt_family_m(self));
int level = NUM2INT(sockopt_level_m(self));
int optname = NUM2INT(sockopt_optname_m(self));
VALUE data = sockopt_data(self);
VALUE v, ret;
ID family_id, level_id, optname_id;
int inspected;
StringValue(data);
ret = rb_sprintf("#<%s:", rb_obj_classname(self));
family_id = intern_family_noprefix(family);
if (family_id)
rb_str_catf(ret, " %s", rb_id2name(family_id));
else
rb_str_catf(ret, " family:%d", family);
if (level == SOL_SOCKET) {
rb_str_cat2(ret, " SOCKET");
optname_id = intern_so_optname(optname);
if (optname_id)
rb_str_catf(ret, " %s", rb_id2name(optname_id));
else
rb_str_catf(ret, " optname:%d", optname);
}
#ifdef HAVE_SYS_UN_H
else if (family == AF_UNIX) {
rb_str_catf(ret, " level:%d", level);
optname_id = intern_local_optname(optname);
if (optname_id)
rb_str_catf(ret, " %s", rb_id2name(optname_id));
else
rb_str_catf(ret, " optname:%d", optname);
}
#endif
else if (IS_IP_FAMILY(family)) {
level_id = intern_iplevel(level);
if (level_id)
rb_str_catf(ret, " %s", rb_id2name(level_id));
else
rb_str_catf(ret, " level:%d", level);
v = optname_to_sym(level, optname);
if (SYMBOL_P(v))
rb_str_catf(ret, " %s", rb_id2name(SYM2ID(v)));
else
rb_str_catf(ret, " optname:%d", optname);
}
else {
rb_str_catf(ret, " level:%d", level);
rb_str_catf(ret, " optname:%d", optname);
}
inspected = 0;
if (level == SOL_SOCKET)
family = AF_UNSPEC;
switch (family) {
case AF_UNSPEC:
switch (level) {
case SOL_SOCKET:
switch (optname) {
# if defined(SO_DEBUG) /* POSIX */
case SO_DEBUG: inspected = inspect_int(level, optname, data, ret); break;
# endif
# if defined(SO_ERROR) /* POSIX */
case SO_ERROR: inspected = inspect_int(level, optname, data, ret); break;
# endif
# if defined(SO_TYPE) /* POSIX */
case SO_TYPE: inspected = inspect_socktype(level, optname, data, ret); break;
# endif
# if defined(SO_ACCEPTCONN) /* POSIX */
case SO_ACCEPTCONN: inspected = inspect_int(level, optname, data, ret); break;
# endif
# if defined(SO_BROADCAST) /* POSIX */
case SO_BROADCAST: inspected = inspect_int(level, optname, data, ret); break;
# endif
# if defined(SO_REUSEADDR) /* POSIX */
case SO_REUSEADDR: inspected = inspect_int(level, optname, data, ret); break;
# endif
# if defined(SO_KEEPALIVE) /* POSIX */
case SO_KEEPALIVE: inspected = inspect_int(level, optname, data, ret); break;
# endif
# if defined(SO_OOBINLINE) /* POSIX */
case SO_OOBINLINE: inspected = inspect_int(level, optname, data, ret); break;
# endif
# if defined(SO_SNDBUF) /* POSIX */
case SO_SNDBUF: inspected = inspect_int(level, optname, data, ret); break;
# endif
# if defined(SO_RCVBUF) /* POSIX */
case SO_RCVBUF: inspected = inspect_int(level, optname, data, ret); break;
# endif
# if defined(SO_DONTROUTE) /* POSIX */
case SO_DONTROUTE: inspected = inspect_int(level, optname, data, ret); break;
# endif
# if defined(SO_RCVLOWAT) /* POSIX */
case SO_RCVLOWAT: inspected = inspect_int(level, optname, data, ret); break;
# endif
# if defined(SO_SNDLOWAT) /* POSIX */
case SO_SNDLOWAT: inspected = inspect_int(level, optname, data, ret); break;
# endif
# if defined(SO_LINGER) /* POSIX */
case SO_LINGER: inspected = inspect_linger(level, optname, data, ret); break;
# endif
# if defined(SO_RCVTIMEO) /* POSIX */
case SO_RCVTIMEO: inspected = inspect_timeval(level, optname, data, ret); break;
# endif
# if defined(SO_SNDTIMEO) /* POSIX */
case SO_SNDTIMEO: inspected = inspect_timeval(level, optname, data, ret); break;
# endif
# if defined(SO_PEERCRED) /* GNU/Linux */
case SO_PEERCRED: inspected = inspect_peercred(level, optname, data, ret); break;
# endif
}
break;
}
break;
case AF_INET:
#ifdef INET6
case AF_INET6:
#endif
switch (level) {
# if defined(IPPROTO_IPV6)
case IPPROTO_IPV6:
switch (optname) {
/* IPV6_JOIN_GROUP ipv6_mreq, IPV6_LEAVE_GROUP ipv6_mreq */
# if defined(IPV6_MULTICAST_HOPS) /* POSIX */
case IPV6_MULTICAST_HOPS: inspected = inspect_int(level, optname, data, ret); break;
# endif
# if defined(IPV6_MULTICAST_IF) /* POSIX */
case IPV6_MULTICAST_IF: inspected = inspect_uint(level, optname, data, ret); break;
# endif
# if defined(IPV6_MULTICAST_LOOP) /* POSIX */
case IPV6_MULTICAST_LOOP: inspected = inspect_uint(level, optname, data, ret); break;
# endif
# if defined(IPV6_UNICAST_HOPS) /* POSIX */
case IPV6_UNICAST_HOPS: inspected = inspect_int(level, optname, data, ret); break;
# endif
# if defined(IPV6_V6ONLY) /* POSIX */
case IPV6_V6ONLY: inspected = inspect_int(level, optname, data, ret); break;
# endif
}
break;
# endif
# if defined(IPPROTO_TCP)
case IPPROTO_TCP:
switch (optname) {
# if defined(TCP_NODELAY) /* POSIX */
case TCP_NODELAY: inspected = inspect_int(level, optname, data, ret); break;
# endif
}
break;
# endif
}
break;
#ifdef HAVE_SYS_UN_H
case AF_UNIX:
switch (level) {
case 0:
switch (optname) {
# if defined(LOCAL_PEERCRED)
case LOCAL_PEERCRED: inspected = inspect_local_peercred(level, optname, data, ret); break;
# endif
}
break;
}
break;
#endif
}
if (!inspected) {
data = rb_str_dump(data);
rb_str_catf(ret, " %s", StringValueCStr(data));
}
rb_str_cat2(ret, ">");
return ret;
}
/*
* call-seq:
* sockopt.unpack(template) => array
*
* Calls String#unpack on sockopt.data.
*
* sockopt = Socket::Option.new(:INET, :SOCKET, :KEEPALIVE, [1].pack("i"))
* p sockopt.unpack("i") #=> [1]
* p sockopt.data.unpack("i") #=> [1]
*/
static VALUE
sockopt_unpack(VALUE self, VALUE template)
{
return rb_funcall(sockopt_data(self), rb_intern("unpack"), 1, template);
}
void
Init_sockopt(void)
{
rb_cSockOpt = rb_define_class_under(rb_cSocket, "Option", rb_cObject);
rb_define_method(rb_cSockOpt, "initialize", sockopt_initialize, 4);
rb_define_method(rb_cSockOpt, "family", sockopt_family_m, 0);
rb_define_method(rb_cSockOpt, "level", sockopt_level_m, 0);
rb_define_method(rb_cSockOpt, "optname", sockopt_optname_m, 0);
rb_define_method(rb_cSockOpt, "data", sockopt_data, 0);
rb_define_method(rb_cSockOpt, "inspect", sockopt_inspect, 0);
rb_define_singleton_method(rb_cSockOpt, "int", sockopt_s_int, 4);
rb_define_method(rb_cSockOpt, "int", sockopt_int, 0);
rb_define_singleton_method(rb_cSockOpt, "bool", sockopt_s_bool, 4);
rb_define_method(rb_cSockOpt, "bool", sockopt_bool, 0);
rb_define_method(rb_cSockOpt, "unpack", sockopt_unpack, 1);
rb_define_method(rb_cSockOpt, "to_s", sockopt_data, 0); /* compatibility for ruby before 1.9.2 */
}
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