diff options
Diffstat (limited to 'ext/socket/raddrinfo.c')
| -rw-r--r-- | ext/socket/raddrinfo.c | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/ext/socket/raddrinfo.c b/ext/socket/raddrinfo.c index b03414928..634a68d22 100644 --- a/ext/socket/raddrinfo.c +++ b/ext/socket/raddrinfo.c @@ -1623,6 +1623,60 @@ addrinfo_ip_port(VALUE self) return INT2NUM(port); } +static int +extract_in_addr(VALUE self, uint32_t *addrp) +{ + rb_addrinfo_t *rai = get_addrinfo(self); + int family = ai_get_afamily(rai); + if (family != AF_INET) return 0; + *addrp = ntohl(((struct sockaddr_in *)&rai->addr)->sin_addr.s_addr); + return 1; +} + +/* + * Returns true for IPv4 private address (10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16). + * It returns false otherwise. + */ +static VALUE +addrinfo_ipv4_private_p(VALUE self) +{ + uint32_t a; + if (!extract_in_addr(self, &a)) return Qfalse; + if ((a & 0xff000000) == 0x0a000000 || /* 10.0.0.0/8 */ + (a & 0xfff00000) == 0xac100000 || /* 172.16.0.0/12 */ + (a & 0xffff0000) == 0xc0a80000) /* 192.168.0.0/16 */ + return Qtrue; + return Qfalse; +} + +/* + * Returns true for IPv4 loopback address (127.0.0.0/8). + * It returns false otherwise. + */ +static VALUE +addrinfo_ipv4_loopback_p(VALUE self) +{ + uint32_t a; + if (!extract_in_addr(self, &a)) return Qfalse; + if ((a & 0xff000000) == 0x7f000000) /* 127.0.0.0/8 */ + return Qtrue; + return Qfalse; +} + +/* + * Returns true for IPv4 multicast address (224.0.0.0/4). + * It returns false otherwise. + */ +static VALUE +addrinfo_ipv4_multicast_p(VALUE self) +{ + uint32_t a; + if (!extract_in_addr(self, &a)) return Qfalse; + if ((a & 0xf0000000) == 0xe0000000) /* 224.0.0.0/4 */ + return Qtrue; + return Qfalse; +} + #ifdef AF_INET6 static struct in6_addr * @@ -2036,6 +2090,10 @@ Init_addrinfo(void) rb_define_method(rb_cAddrInfo, "ip_address", addrinfo_ip_address, 0); rb_define_method(rb_cAddrInfo, "ip_port", addrinfo_ip_port, 0); + rb_define_method(rb_cAddrInfo, "ipv4_private?", addrinfo_ipv4_private_p, 0); + rb_define_method(rb_cAddrInfo, "ipv4_loopback?", addrinfo_ipv4_loopback_p, 0); + rb_define_method(rb_cAddrInfo, "ipv4_multicast?", addrinfo_ipv4_multicast_p, 0); + #ifdef AF_INET6 rb_define_method(rb_cAddrInfo, "ipv6_unspecified?", addrinfo_ipv6_unspecified_p, 0); rb_define_method(rb_cAddrInfo, "ipv6_loopback?", addrinfo_ipv6_loopback_p, 0); |