namespace folly {
-
// free functions
size_t hash_value(const IPAddressV4& addr) {
return addr.hash();
result->append(addr.str());
}
-bool IPAddressV4::validate(StringPiece ip) {
- constexpr size_t kStrMaxLen = INET_ADDRSTRLEN;
- std::array<char, kStrMaxLen + 1> ip_cstr;
- const size_t len = std::min(ip.size(), kStrMaxLen);
- std::memcpy(ip_cstr.data(), ip.data(), len);
- ip_cstr[len] = 0;
- struct in_addr addr;
- return 1 == inet_pton(AF_INET, ip_cstr.data(), &addr);
+bool IPAddressV4::validate(StringPiece ip) noexcept {
+ return tryFromString(ip).hasValue();
}
// public static
}
// public default constructor
-IPAddressV4::IPAddressV4() {
-}
+IPAddressV4::IPAddressV4() {}
// ByteArray4 constructor
-IPAddressV4::IPAddressV4(const ByteArray4& src)
- : addr_(src)
-{
-}
+IPAddressV4::IPAddressV4(const ByteArray4& src) noexcept : addr_(src) {}
// public string constructor
-IPAddressV4::IPAddressV4(StringPiece addr)
- : addr_()
-{
- auto ip = addr.str();
- if (inet_pton(AF_INET, ip.c_str(), &addr_.inAddr_) != 1) {
- throw IPAddressFormatException(sformat("Invalid IPv4 address '{}'", addr));
+IPAddressV4::IPAddressV4(StringPiece addr) : addr_() {
+ auto maybeIp = tryFromString(addr);
+ if (maybeIp.hasError()) {
+ throw IPAddressFormatException(
+ to<std::string>("Invalid IPv4 address '", addr, "'"));
}
+ *this = std::move(maybeIp.value());
+}
+
+Expected<IPAddressV4, IPAddressFormatError> IPAddressV4::tryFromString(
+ StringPiece str) noexcept {
+ struct in_addr inAddr;
+ if (inet_pton(AF_INET, str.str().c_str(), &inAddr) != 1) {
+ return makeUnexpected(IPAddressFormatError::INVALID_IP);
+ }
+ return IPAddressV4(inAddr);
}
// in_addr constructor
-IPAddressV4::IPAddressV4(const in_addr src)
- : addr_(src)
-{
+IPAddressV4::IPAddressV4(const in_addr src) noexcept : addr_(src) {}
+
+IPAddressV4 IPAddressV4::fromBinary(ByteRange bytes) {
+ auto maybeIp = tryFromBinary(bytes);
+ if (maybeIp.hasError()) {
+ throw IPAddressFormatException(to<std::string>(
+ "Invalid IPv4 binary data: length must be 4 bytes, got ",
+ bytes.size()));
+ }
+ return maybeIp.value();
}
-// public
-void IPAddressV4::setFromBinary(ByteRange bytes) {
+Expected<IPAddressV4, IPAddressFormatError> IPAddressV4::tryFromBinary(
+ ByteRange bytes) noexcept {
+ IPAddressV4 addr;
+ auto setResult = addr.trySetFromBinary(bytes);
+ if (setResult.hasError()) {
+ return makeUnexpected(std::move(setResult.error()));
+ }
+ return addr;
+}
+
+Expected<Unit, IPAddressFormatError> IPAddressV4::trySetFromBinary(
+ ByteRange bytes) noexcept {
if (bytes.size() != 4) {
- throw IPAddressFormatException(sformat(
- "Invalid IPv4 binary data: length must be 4 bytes, got {}",
- bytes.size()));
+ return makeUnexpected(IPAddressFormatError::INVALID_IP);
}
memcpy(&addr_.inAddr_.s_addr, bytes.data(), sizeof(in_addr));
+ return folly::unit;
}
// static
// reverse 1.0.168.192 -> 192.168.0.1
return IPAddressV4(join(".", pieces.rbegin(), pieces.rend()));
}
-
-// public
IPAddressV6 IPAddressV4::createIPv6() const {
ByteArray16 ba{};
ba[10] = 0xff;
}
// public
-bool IPAddressV4::inSubnetWithMask(const IPAddressV4& subnet,
- const ByteArray4 cidrMask) const {
- const ByteArray4 mask = detail::Bytes::mask(toByteArray(), cidrMask);
- const ByteArray4 subMask = detail::Bytes::mask(subnet.toByteArray(),
- cidrMask);
+bool IPAddressV4::inSubnetWithMask(
+ const IPAddressV4& subnet,
+ const ByteArray4 cidrMask) const {
+ const auto mask = detail::Bytes::mask(toByteArray(), cidrMask);
+ const auto subMask = detail::Bytes::mask(subnet.toByteArray(), cidrMask);
return (mask == subMask);
}
bool IPAddressV4::isNonroutable() const {
auto ip = toLongHBO();
return isPrivate() ||
- (ip <= 0x00FFFFFF) || // 0.0.0.0-0.255.255.255
+ (/* align */ true && ip <= 0x00FFFFFF) || // 0.0.0.0-0.255.255.255
(ip >= 0xC0000000 && ip <= 0xC00000FF) || // 192.0.0.0-192.0.0.255
(ip >= 0xC0000200 && ip <= 0xC00002FF) || // 192.0.2.0-192.0.2.255
(ip >= 0xC6120000 && ip <= 0xC613FFFF) || // 198.18.0.0-198.19.255.255
(ip >= 0xC6336400 && ip <= 0xC63364FF) || // 198.51.100.0-198.51.100.255
(ip >= 0xCB007100 && ip <= 0xCB0071FF) || // 203.0.113.0-203.0.113.255
- (ip >= 0xE0000000 && ip <= 0xFFFFFFFF); // 224.0.0.0-255.255.255.255
+ (ip >= 0xE0000000 && ip <= 0xFFFFFFFF) || // 224.0.0.0-255.255.255.255
+ false;
}
// public
bool IPAddressV4::isPrivate() const {
auto ip = toLongHBO();
- return
+ return // some ranges below
(ip >= 0x0A000000 && ip <= 0x0AFFFFFF) || // 10.0.0.0-10.255.255.255
(ip >= 0x7F000000 && ip <= 0x7FFFFFFF) || // 127.0.0.0-127.255.255.255
(ip >= 0xA9FE0000 && ip <= 0xA9FEFFFF) || // 169.254.0.0-169.254.255.255
(ip >= 0xAC100000 && ip <= 0xAC1FFFFF) || // 172.16.0.0-172.31.255.255
- (ip >= 0xC0A80000 && ip <= 0xC0A8FFFF); // 192.168.0.0-192.168.255.255
+ (ip >= 0xC0A80000 && ip <= 0xC0A8FFFF) || // 192.168.0.0-192.168.255.255
+ false;
}
// public