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/************************************************
constants.c -
created at: Thu Mar 31 12:21:29 JST 1994
Copyright (C) 1993-2007 Yukihiro Matsumoto
************************************************/
#include "rubysocket.h"
static void sock_define_const(const char *name, int value, VALUE mConst);
static void sock_define_uconst(const char *name, unsigned int value, VALUE mConst);
#define sock_define_const(name, value) sock_define_const(name, value, mConst)
#define sock_define_uconst(name, value) sock_define_uconst(name, value, mConst)
#include "constdefs.c"
#undef sock_define_const
#undef sock_define_uconst
static int
constant_arg(VALUE arg, int (*str_to_int)(const char*, int, int*), const char *errmsg)
{
VALUE tmp;
char *ptr;
int ret;
if (SYMBOL_P(arg)) {
arg = rb_sym_to_s(arg);
goto str;
}
else if (!NIL_P(tmp = rb_check_string_type(arg))) {
arg = tmp;
str:
rb_check_safe_obj(arg);
ptr = RSTRING_PTR(arg);
if (str_to_int(ptr, RSTRING_LEN(arg), &ret) == -1)
rb_raise(rb_eSocket, "%s: %s", errmsg, ptr);
}
else {
ret = NUM2INT(arg);
}
return ret;
}
int
family_arg(VALUE domain)
{
/* convert AF_INET, etc. */
return constant_arg(domain, family_to_int, "unknown socket domain");
}
int
socktype_arg(VALUE type)
{
/* convert SOCK_STREAM, etc. */
return constant_arg(type, socktype_to_int, "unknown socket type");
}
int
level_arg(VALUE level)
{
/* convert SOL_SOCKET, IPPROTO_TCP, etc. */
return constant_arg(level, level_to_int, "unknown protocol level");
}
int
optname_arg(int level, VALUE optname)
{
switch (level) {
case SOL_SOCKET:
return constant_arg(optname, so_optname_to_int, "unknown socket level option name");
case IPPROTO_IP:
return constant_arg(optname, ip_optname_to_int, "unknown IP level option name");
#ifdef IPPROTO_IPV6
case IPPROTO_IPV6:
return constant_arg(optname, ipv6_optname_to_int, "unknown IPv6 level option name");
#endif
case IPPROTO_TCP:
return constant_arg(optname, tcp_optname_to_int, "unknown TCP level option name");
case IPPROTO_UDP:
return constant_arg(optname, udp_optname_to_int, "unknown UDP level option name");
default:
return NUM2INT(optname);
}
}
int
shutdown_how_arg(VALUE how)
{
/* convert SHUT_RD, SHUT_WR, SHUT_RDWR. */
return constant_arg(how, shutdown_how_to_int, "unknown shutdown argument");
}
static void
sock_define_const(const char *name, int value, VALUE mConst)
{
rb_define_const(rb_cSocket, name, INT2NUM(value));
rb_define_const(mConst, name, INT2NUM(value));
}
static void
sock_define_uconst(const char *name, unsigned int value, VALUE mConst)
{
rb_define_const(rb_cSocket, name, UINT2NUM(value));
rb_define_const(mConst, name, UINT2NUM(value));
}
/*
* Socket::Constants module
*/
void
Init_socket_constants(void)
{
VALUE mConst;
/* constants */
mConst = rb_define_module_under(rb_cSocket, "Constants");
init_constants(mConst);
}
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