#include <folly/MacAddress.h>
#include <folly/detail/IPAddressSource.h>
+#if !_WIN32
+#include <net/if.h>
+#else
+// Because of the massive pain that is libnl, this can't go into the socket
+// portability header as you can't include <linux/if.h> and <net/if.h> in
+// the same translation unit without getting errors -_-...
+#include <iphlpapi.h> // @manual
+#include <ntddndis.h> // @manual
+
+// Alias the max size of an interface name to what posix expects.
+#define IFNAMSIZ IF_NAMESIZE
+#endif
+
using std::ostream;
using std::string;
}
// public default constructor
-IPAddressV6::IPAddressV6() {
-}
+IPAddressV6::IPAddressV6() {}
// public string constructor
IPAddressV6::IPAddressV6(StringPiece addr) {
// Allow addresses surrounded in brackets
if (ip.size() < 2) {
throw IPAddressFormatException(
- to<std::string>("Invalid IPv6 address '", ip, "': address too short"));
+ sformat("Invalid IPv6 address '{}': address too short", ip));
}
if (ip.front() == '[' && ip.back() == ']') {
ip = ip.substr(1, ip.size() - 2);
scope_ = uint16_t(ipAddr->sin6_scope_id);
freeaddrinfo(result);
} else {
- throw IPAddressFormatException(
- to<std::string>("Invalid IPv6 address '", ip, "'"));
+ throw IPAddressFormatException(sformat("Invalid IPv6 address '{}'", ip));
}
}
// in6_addr constructor
-IPAddressV6::IPAddressV6(const in6_addr& src)
- : addr_(src)
-{
-}
+IPAddressV6::IPAddressV6(const in6_addr& src) : addr_(src) {}
// sockaddr_in6 constructor
IPAddressV6::IPAddressV6(const sockaddr_in6& src)
- : addr_(src.sin6_addr)
- , scope_(uint16_t(src.sin6_scope_id))
-{
-}
+ : addr_(src.sin6_addr), scope_(uint16_t(src.sin6_scope_id)) {}
// ByteArray16 constructor
-IPAddressV6::IPAddressV6(const ByteArray16& src)
- : addr_(src)
-{
-}
+IPAddressV6::IPAddressV6(const ByteArray16& src) : addr_(src) {}
// link-local constructor
-IPAddressV6::IPAddressV6(LinkLocalTag, MacAddress mac)
- : addr_(mac) {
-}
+IPAddressV6::IPAddressV6(LinkLocalTag, MacAddress mac) : addr_(mac) {}
IPAddressV6::AddressStorage::AddressStorage(MacAddress mac) {
// The link-local address uses modified EUI-64 format,
Optional<MacAddress> IPAddressV6::getMacAddressFromLinkLocal() const {
// Returned MacAddress must be constructed from a link-local IPv6 address.
- if (!(addr_.bytes_[0] == 0xfe && addr_.bytes_[1] == 0x80 &&
- addr_.bytes_[2] == 0x00 && addr_.bytes_[3] == 0x00 &&
- addr_.bytes_[4] == 0x00 && addr_.bytes_[5] == 0x00 &&
- addr_.bytes_[6] == 0x00 && addr_.bytes_[7] == 0x00 &&
- addr_.bytes_[11] == 0xff && addr_.bytes_[12] == 0xfe)) {
+ if (!isLinkLocal()) {
return folly::none;
}
- // The link-local address uses modified EUI-64 format,
+ return getMacAddressFromEUI64();
+}
+
+Optional<MacAddress> IPAddressV6::getMacAddressFromEUI64() const {
+ if (!(addr_.bytes_[11] == 0xff && addr_.bytes_[12] == 0xfe)) {
+ return folly::none;
+ }
+ // The auto configured address uses modified EUI-64 format,
// See RFC 4291 sections 2.5.1, 2.5.6, and Appendix A
std::array<uint8_t, MacAddress::SIZE> bytes;
- // Step 1: first 8 bytes are fe:80:00:00:00:00:00:00, and can be stripped
+ // Step 1: first 8 bytes are network prefix, and can be stripped
// Step 2: invert the universal/local (U/L) flag (bit 7)
bytes[0] = addr_.bytes_[8] ^ 0x02;
- // Step 3: copy thhese bytes are they are
+ // Step 3: copy these bytes as they are
bytes[1] = addr_.bytes_[9];
bytes[2] = addr_.bytes_[10];
// Step 4: strip bytes (0xfffe), which are bytes_[11] and bytes_[12]
void IPAddressV6::setFromBinary(ByteRange bytes) {
if (bytes.size() != 16) {
- throw IPAddressFormatException(to<std::string>(
- "Invalid IPv6 binary data: length must ",
- "be 16 bytes, got ",
+ throw IPAddressFormatException(sformat(
+ "Invalid IPv6 binary data: length must be 16 bytes, got {}",
bytes.size()));
}
memcpy(&addr_.in6Addr_.s6_addr, bytes.data(), sizeof(in6_addr));
// given a src string, unpack count*2 bytes into dest
// dest must have as much storage as count
-static inline void unpackInto(const unsigned char* src,
- uint16_t* dest,
- size_t count) {
+static inline void
+unpackInto(const unsigned char* src, uint16_t* dest, size_t count) {
for (size_t i = 0, hi = 1, lo = 0; i < count; i++) {
dest[i] = unpack(src[hi], src[lo]);
hi += 2;
// public
IPAddressV4 IPAddressV6::getIPv4For6To4() const {
if (!is6To4()) {
- throw IPAddressV6::TypeError(format(
- "Invalid IP '{}': not a 6to4 address", str()).str());
+ throw IPAddressV6::TypeError(
+ sformat("Invalid IP '{}': not a 6to4 address", str()));
}
// convert 16x8 bytes into first 4x16 bytes
- uint16_t ints[4] = {0,0,0,0};
+ uint16_t ints[4] = {0, 0, 0, 0};
unpackInto(bytes(), ints, 4);
// repack into 4x8
union {
// public
IPAddressV6::Type IPAddressV6::type() const {
// convert 16x8 bytes into first 2x16 bytes
- uint16_t ints[2] = {0,0};
+ uint16_t ints[2] = {0, 0};
unpackInto(bytes(), ints, 2);
if ((((uint32_t)ints[0] << 16) | ints[1]) == IPAddressV6::PREFIX_TEREDO) {
// public
string IPAddressV6::toJson() const {
- return format(
- "{{family:'AF_INET6', addr:'{}', hash:{}}}", str(), hash()).str();
+ return sformat("{{family:'AF_INET6', addr:'{}', hash:{}}}", str(), hash());
}
// public
auto subnetInfo = IPAddress::createNetwork(cidrNetwork);
auto addr = subnetInfo.first;
if (!addr.isV6()) {
- throw IPAddressFormatException(to<std::string>(
- "Address '", addr.toJson(), "' ", "is not a V6 address"));
+ throw IPAddressFormatException(
+ sformat("Address '{}' is not a V6 address", addr.toJson()));
}
return inSubnetWithMask(addr.asV6(), fetchMask(subnetInfo.second));
}
// public
-bool IPAddressV6::inSubnetWithMask(const IPAddressV6& subnet,
- const ByteArray16& cidrMask) const {
- const ByteArray16 mask = detail::Bytes::mask(toByteArray(), cidrMask);
- const ByteArray16 subMask = detail::Bytes::mask(subnet.toByteArray(),
- cidrMask);
+bool IPAddressV6::inSubnetWithMask(
+ const IPAddressV6& subnet,
+ const ByteArray16& cidrMask) const {
+ const auto mask = detail::Bytes::mask(toByteArray(), cidrMask);
+ const auto subMask = detail::Bytes::mask(subnet.toByteArray(), cidrMask);
return (mask == subMask);
}
bool IPAddressV6::isRoutable() const {
return
- // 2000::/3 is the only assigned global unicast block
- inBinarySubnet({{0x20, 0x00}}, 3) ||
- // ffxe::/16 are global scope multicast addresses,
- // which are eligible to be routed over the internet
- (isMulticast() && getMulticastScope() == 0xe);
+ // 2000::/3 is the only assigned global unicast block
+ inBinarySubnet({{0x20, 0x00}}, 3) ||
+ // ffxe::/16 are global scope multicast addresses,
+ // which are eligible to be routed over the internet
+ (isMulticast() && getMulticastScope() == 0xe);
}
bool IPAddressV6::isLinkLocalBroadcast() const {
// addresses
DCHECK(!isMulticast());
- uint8_t bytes[16] = { 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x01, 0xff, 0x00, 0x00, 0x00 };
- bytes[13] = addr_.bytes_[13];
- bytes[14] = addr_.bytes_[14];
- bytes[15] = addr_.bytes_[15];
+ uint8_t bytes[16] = {
+ 0xff,
+ 0x02,
+ 0x00,
+ 0x00,
+ 0x00,
+ 0x00,
+ 0x00,
+ 0x00,
+ 0x00,
+ 0x00,
+ 0x00,
+ 0x01,
+ 0xff,
+ addr_.bytes_[13],
+ addr_.bytes_[14],
+ addr_.bytes_[15],
+ };
return IPAddressV6::fromBinary(ByteRange(bytes, 16));
}
static const auto bits = bitCount();
if (numBits > bits) {
throw IPAddressFormatException(
- to<std::string>("numBits(", numBits, ") > bitCount(", bits, ")"));
+ sformat("numBits({}) > bitCount({})", numBits, bits));
}
ByteArray16 ba = detail::Bytes::mask(fetchMask(numBits), addr_.bytes_);
return IPAddressV6(ba);
// public
string IPAddressV6::str() const {
- char buffer[INET6_ADDRSTRLEN] = {0};
- sockaddr_in6 sock = toSockAddr();
- int error = getnameinfo(
- (sockaddr*)&sock,
- sizeof(sock),
- buffer,
- INET6_ADDRSTRLEN,
- nullptr,
- 0,
- NI_NUMERICHOST);
- if (!error) {
- string ip(buffer);
- return ip;
- } else {
- throw IPAddressFormatException(to<std::string>(
- "Invalid address with hex ",
- "'",
+ char buffer[INET6_ADDRSTRLEN + IFNAMSIZ + 1];
+
+ if (!inet_ntop(AF_INET6, toAddr().s6_addr, buffer, INET6_ADDRSTRLEN)) {
+ throw IPAddressFormatException(sformat(
+ "Invalid address with hex '{}' with error {}",
detail::Bytes::toHex(bytes(), 16),
- "%",
- sock.sin6_scope_id,
- "'",
- " , with error ",
- gai_strerror(error)));
+ strerror(errno)));
}
+
+ auto scopeId = getScopeId();
+ if (scopeId != 0) {
+ auto len = strlen(buffer);
+ buffer[len] = '%';
+
+ auto errsv = errno;
+ if (!if_indextoname(scopeId, buffer + len + 1)) {
+ // if we can't map the if because eg. it no longer exists,
+ // append the if index instead
+ snprintf(buffer + len + 1, IFNAMSIZ, "%u", scopeId);
+ }
+ errno = errsv;
+ }
+
+ return string(buffer);
}
// public
uint8_t IPAddressV6::getNthMSByte(size_t byteIndex) const {
const auto highestIndex = byteCount() - 1;
if (byteIndex > highestIndex) {
- throw std::invalid_argument(to<string>("Byte index must be <= ",
- to<string>(highestIndex), " for addresses of type :",
+ throw std::invalid_argument(sformat(
+ "Byte index must be <= {} for addresses of type: {}",
+ highestIndex,
detail::familyNameStr(AF_INET6)));
}
return bytes()[byteIndex];
}
// protected
-bool IPAddressV6::inBinarySubnet(const std::array<uint8_t, 2> addr,
- size_t numBits) const {
+bool IPAddressV6::inBinarySubnet(
+ const std::array<uint8_t, 2> addr,
+ size_t numBits) const {
auto masked = mask(numBits);
return (std::memcmp(addr.data(), masked.bytes(), 2) == 0);
}
-} // folly
+} // namespace folly
projects / folly.git / blobdiff