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#pragma once
#include "Core/Str.h"
#include "Core/StrBuf.h"
#include "Core/Array.h"
#include "Core/EnginePtr.h"
#include "Net.h"
namespace storm {
STORM_PKG(core.net);
/**
* Abstract representation of an *internet address* (e.g. IPv4 or IPv6). Roughly corresponds to
* a `struct sockaddr` in UNIX.
*
* Port = 0 means 'unspecified port'.
*
* Sadly, it is not possible to subclass this class from Storm, as low-level memory access is
* required to interface with the underlying socket implementation. Because of this, no
* constructor is exposed to Storm.
*/
class Address : public Object {
STORM_CLASS;
public:
// Create.
Address(Nat port);
// Get the port.
Nat STORM_FN port() const { return myPort; }
// Create a copy bound to a different port.
Address *STORM_FN withPort(Nat port) const;
// Fill a 'sockaddr' with the address in here.
virtual void fill(sockaddr *fill) const;
// To string.
virtual void STORM_FN toS(StrBuf *to) const;
// Hash.
virtual Nat STORM_FN hash() const;
// Equality.
virtual Bool STORM_FN operator ==(const Address &other) const;
private:
// Port.
Nat myPort;
// Explicit padding required since the ABI used by GCC differs from MSVC.
// TODO: Remove the need for this member!
Nat pad;
};
// Convert a sockaddr to a proper Storm class.
Address *toStorm(Engine &e, sockaddr *src);
// Unsafe version that requires explicit checking.
MAYBE(Address *) toStormUnsafe(Engine &e, sockaddr *src);
// Parse a string containing an address into an appropriate representation. Does *not* resolve names.
Address *STORM_FN toAddress(Str *addr);
// Lookup a name on the network.
// Note: this function currently blocks *everything* running on the current thread while waiting
// for the network. It could therefore be useful to dispatch it to another thread.
Array<Address *> *STORM_FN lookupAddress(Str *addr);
/**
* An IPv4 address.
*/
class Inet4Address : public Address {
STORM_CLASS;
public:
// Create from sockaddr. Prefer 'toStorm' above.
Inet4Address(sockaddr_in *src);
// Create from numbers. 'addr' is the address encoded as a 32-bit integer, with the high
// bits being the first digits in the address.
STORM_CTOR Inet4Address(Nat port, Nat addr);
// Get the raw address.
Nat STORM_FN data() const { return myAddr; }
// Access individual parts by index.
Byte STORM_FN operator [](Nat id) const;
// Number of bytes. Allows iterating through the individual parts.
Nat STORM_FN count() const { return 4; }
// Fill 'sockaddr'.
virtual void fill(sockaddr *fill) const;
// To string.
virtual void STORM_FN toS(StrBuf *to) const;
// Hash.
virtual Nat STORM_FN hash() const;
// Equality.
virtual Bool STORM_FN operator ==(const Address &other) const;
private:
// The address.
Nat myAddr;
};
/**
* An IPv6 address.
*/
class Inet6Address : public Address {
STORM_CLASS;
public:
// Create from sockaddr. Prefer 'toStorm' above.
Inet6Address(sockaddr_in6 *src);
// Create from numbers. 'addr' is the address encoded as four 32-bit integers, with the high
// bits being the first digits in the address.
STORM_CTOR Inet6Address(Nat port, Nat addr0, Nat addr1, Nat addr2, Nat addr3);
STORM_CTOR Inet6Address(Nat port, Nat addr0, Nat addr1, Nat addr2, Nat addr3, Nat flow, Nat scope);
// Access individual parts by index. Each part is 16 bits long.
Nat STORM_FN operator [](Nat id) const;
// Number of 16-bit parts. Allows iterating through the individual parts.
Nat STORM_FN count() const { return 8; }
// Get flow info.
Nat STORM_FN flowInfo() const { return myFlow; }
// Get scope.
Nat STORM_FN scope() const { return myScope; }
// Fill 'sockaddr'.
virtual void fill(sockaddr *fill) const;
// To string.
virtual void STORM_FN toS(StrBuf *to) const;
// Hash.
virtual Nat STORM_FN hash() const;
// Equality.
virtual Bool STORM_FN operator ==(const Address &other) const;
private:
// The address.
Nat myAddr0;
Nat myAddr1;
Nat myAddr2;
Nat myAddr3;
// Flow info and scope.
Nat myFlow;
Nat myScope;
};
}
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