/*
- * Copyright 2014 Facebook, Inc.
+ * Copyright 2017 Facebook, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
#pragma once
+#include <cstring>
+
+#include <array>
#include <functional>
-#include <iostream>
+#include <iosfwd>
#include <map>
#include <stdexcept>
-#include <boost/operators.hpp>
-
-#include "folly/Hash.h"
-#include "folly/Range.h"
-#include "folly/detail/IPAddress.h"
+#include <folly/Hash.h>
+#include <folly/Optional.h>
+#include <folly/Range.h>
+#include <folly/detail/IPAddress.h>
namespace folly {
* isTeredo, isIPv4Mapped, tryCreateIPv4, type
*
* @see IPAddress
+ *
+ * Notes on scope ID parsing:
+ *
+ * getaddrinfo() uses if_nametoindex() to convert interface names
+ * into a numerical index. For instance,
+ * "fe80::202:c9ff:fec1:ee08%eth0" may return scope ID 2 on some
+ * hosts, but other numbers on other hosts. It will fail entirely on
+ * hosts without an eth0 interface.
+ *
+ * Serializing / Deserializing IPAddressB6's on different hosts
+ * that use link-local scoping probably won't work.
*/
-class IPAddressV6 : boost::totally_ordered<IPAddressV6> {
+class IPAddressV6 {
public:
// V6 Address Type
enum Type {
// Binary prefix for 6to4 networks
static const uint32_t PREFIX_6TO4;
+ // Size of std::string returned by toFullyQualified.
+ static constexpr size_t kToFullyQualifiedSize =
+ 8 /*words*/ * 4 /*hex chars per word*/ + 7 /*separators*/;
+
+ // returns true iff the input string can be parsed as an ipv6-address
+ static bool validate(StringPiece ip);
+
/**
* Create a new IPAddress instance from the provided binary data.
* @throws IPAddressFormatException if the input length is not 16 bytes.
return addr;
}
+ /**
+ * Create a new IPAddress instance from the ip6.arpa representation.
+ * @throws IPAddressFormatException if the input is not a valid ip6.arpa
+ * representation
+ */
+ static IPAddressV6 fromInverseArpaName(const std::string& arpaname);
+
+ /**
+ * Returns the address as a Range.
+ */
+ ByteRange toBinary() const {
+ return ByteRange((const unsigned char *) &addr_.in6Addr_.s6_addr, 16);
+ }
+
/**
* Default constructor for IPAddressV6.
*
// Create an IPAddressV6 from a string
// @throws IPAddressFormatException
+ //
explicit IPAddressV6(StringPiece ip);
// ByteArray16 constructor
// in6_addr constructor
explicit IPAddressV6(const in6_addr& src);
+ // sockaddr_in6 constructor
+ explicit IPAddressV6(const sockaddr_in6& src);
+
/**
* Create a link-local IPAddressV6 from the specified ethernet MAC address.
*/
*/
bool isLinkLocal() const;
+ /**
+ * Return the mac address if this is a link-local IPv6 address.
+ *
+ * @return an Optional<MacAddress> union representing the mac address.
+ *
+ * If the address is not a link-local one it will return an empty Optional.
+ * You can use Optional::value() to check whether the mac address is not null.
+ */
+ Optional<MacAddress> getMacAddressFromLinkLocal() const;
+
/**
* Return true if this is a multicast address.
*/
// @see IPAddress#isZero
bool isZero() const {
- return detail::Bytes::isZero(bytes(), 16);
+ constexpr auto zero = ByteArray16{{}};
+ return 0 == std::memcmp(bytes(), zero.data(), zero.size());
}
bool isLinkLocalBroadcast() const;
// return underlying in6_addr structure
in6_addr toAddr() const { return addr_.in6Addr_; }
+ uint16_t getScopeId() const { return scope_; }
+ void setScopeId(uint16_t scope) {
+ scope_ = scope;
+ }
+
sockaddr_in6 toSockAddr() const {
sockaddr_in6 addr;
memset(&addr, 0, sizeof(sockaddr_in6));
addr.sin6_family = AF_INET6;
+ addr.sin6_scope_id = scope_;
memcpy(&addr.sin6_addr, &addr_.in6Addr_, sizeof(in6_addr));
return addr;
}
// @see IPAddress#toFullyQualified
std::string toFullyQualified() const;
+ std::string toInverseArpaName() const;
+
// @see IPAddress#str
std::string str() const;
// @see IPAddress#version
- size_t version() const { return 6; }
+ uint8_t version() const { return 6; }
/**
* Return the solicited-node multicast address for this address.
static const ByteArray16 fetchMask(size_t numBits);
// Given 2 IPAddressV6,mask pairs extract the longest common IPAddress,
// mask pair
- static CIDRNetworkV6 longestCommonPrefix(const CIDRNetworkV6& one,
- const CIDRNetworkV6& two) {
- auto prefix = detail::Bytes::longestCommonPrefix(
- one.first.addr_.bytes_, one.second,
- two.first.addr_.bytes_, two.second);
- return {IPAddressV6(prefix.first), prefix.second};
- }
+ static CIDRNetworkV6 longestCommonPrefix(
+ const CIDRNetworkV6& one,
+ const CIDRNetworkV6& two);
// Number of bytes in the address representation.
static constexpr size_t byteCount() { return 16; }
explicit AddressStorage(MacAddress mac);
} addr_;
+ // Link-local scope id. This should always be 0 for IPAddresses that
+ // are *not* link-local.
+ uint16_t scope_{0};
+
static const std::array<ByteArray16, 129> masks_;
/**
* Return true if two addresses are equal.
*/
inline bool operator==(const IPAddressV6& addr1, const IPAddressV6& addr2) {
- return (std::memcmp(addr1.toAddr().s6_addr, addr2.toAddr().s6_addr, 16) == 0);
+ return (std::memcmp(addr1.toAddr().s6_addr, addr2.toAddr().s6_addr, 16) == 0)
+ && addr1.getScopeId() == addr2.getScopeId();
}
// Return true if addr1 < addr2
inline bool operator<(const IPAddressV6& addr1, const IPAddressV6& addr2) {
- return (std::memcmp(addr1.toAddr().s6_addr, addr2.toAddr().s6_addr, 16) < 0);
+ auto cmp = std::memcmp(addr1.toAddr().s6_addr,
+ addr2.toAddr().s6_addr, 16) < 0;
+ if (!cmp) {
+ return addr1.getScopeId() < addr2.getScopeId();
+ } else {
+ return cmp;
+ }
+}
+// Derived operators
+inline bool operator!=(const IPAddressV6& a, const IPAddressV6& b) {
+ return !(a == b);
+}
+inline bool operator>(const IPAddressV6& a, const IPAddressV6& b) {
+ return b < a;
+}
+inline bool operator<=(const IPAddressV6& a, const IPAddressV6& b) {
+ return !(a > b);
+}
+inline bool operator>=(const IPAddressV6& a, const IPAddressV6& b) {
+ return !(a < b);
}
} // folly
projects / folly.git / blobdiff