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#include "methods.h"
#include "byteswap.h"
#include "packet_kinds.h"
#include <DHT.h>
METHOD(bin, Binary_encode, CipherText)
{
uint64_t length = be64toh(args.size);
SUCCESS {
msgpack_pack_bin(res, sizeof(uint64_t) + args.size);
msgpack_pack_bin_body(res, &length, sizeof(uint64_t));
msgpack_pack_bin_body(res, args.ptr, args.size);
}
return 0;
}
METHOD(array, Binary_encode, DhtPacket)
{
return pending;
}
METHOD(array, Binary_encode, HostAddress)
{
return pending;
}
METHOD(u64, Binary_encode, Word64)
{
return pending;
}
METHOD(bin, Binary_encode, Key_PublicKey)
{
return pending;
}
METHOD(array, Binary_encode, KeyPair)
{
CHECK_SIZE(args, 2);
CHECK_TYPE(args.ptr[0], MSGPACK_OBJECT_BIN);
CHECK_TYPE(args.ptr[1], MSGPACK_OBJECT_BIN);
msgpack_object_bin secret_key = args.ptr[0].via.bin;
msgpack_object_bin public_key = args.ptr[1].via.bin;
CHECK_SIZE(secret_key, 32);
CHECK_SIZE(public_key, 32);
SUCCESS {
uint8_t data[64];
memcpy(data, secret_key.ptr, 32);
memcpy(data + 32, public_key.ptr, 32);
msgpack_pack_bin(res, 64);
msgpack_pack_bin_body(res, data, 64);
}
return 0;
}
#define PACKED_NODE_SIZE_IP6 (1 + SIZE_IP6 + sizeof(uint16_t) + crypto_box_PUBLICKEYBYTES)
METHOD(array, Binary_encode, NodeInfo)
{
CHECK_SIZE(args, 3);
CHECK_TYPE(args.ptr[0], MSGPACK_OBJECT_POSITIVE_INTEGER);
uint64_t protocol = args.ptr[0].via.u64;
CHECK_TYPE(args.ptr[1], MSGPACK_OBJECT_ARRAY);
msgpack_object_array address = args.ptr[1].via.array;
CHECK_SIZE(address, 2);
CHECK_TYPE(address.ptr[0], MSGPACK_OBJECT_ARRAY);
msgpack_object_array host_address = address.ptr[0].via.array;
CHECK_TYPE(address.ptr[1], MSGPACK_OBJECT_POSITIVE_INTEGER);
uint64_t port_number = address.ptr[1].via.u64;
CHECK_SIZE(host_address, 2);
CHECK_TYPE(host_address.ptr[0], MSGPACK_OBJECT_POSITIVE_INTEGER);
uint64_t address_family = host_address.ptr[0].via.u64;
CHECK_TYPE(args.ptr[2], MSGPACK_OBJECT_BIN);
msgpack_object_bin public_key = args.ptr[2].via.bin;
CHECK_SIZE(public_key, crypto_box_PUBLICKEYBYTES);
IP_Port ipp;
ipp.port = htons(port_number);
switch (address_family) {
case 0: {
/* IPv4*/
if (protocol == 1) {
ipp.ip.family = TCP_INET;
} else {
ipp.ip.family = AF_INET;
}
CHECK_TYPE(host_address.ptr[1], MSGPACK_OBJECT_POSITIVE_INTEGER);
uint64_t addr = host_address.ptr[1].via.u64;
ipp.ip.ip4.uint32 = htonl(addr);
break;
}
case 1: {
/* IPv6 */
if (protocol == 1) {
ipp.ip.family = TCP_INET6;
} else {
ipp.ip.family = AF_INET6;
}
CHECK_TYPE(host_address.ptr[1], MSGPACK_OBJECT_ARRAY);
msgpack_object_array addr = host_address.ptr[1].via.array;
int i;
for (i = 0; i < 4; ++i) {
CHECK_TYPE(addr.ptr[i], MSGPACK_OBJECT_POSITIVE_INTEGER);
uint64_t component = addr.ptr[i].via.u64;
ipp.ip.ip6.uint32[i] = htonl(component);
}
break;
}
}
Node_format node;
node.ip_port = ipp;
memcpy(&node.public_key, public_key.ptr, crypto_box_PUBLICKEYBYTES);
/* We assume IP6 because it's bigger */
uint8_t packed_node[PACKED_NODE_SIZE_IP6];
int len = pack_nodes(packed_node, sizeof packed_node, &node, 1);
if (len < 0) {
return failure;
}
SUCCESS {
msgpack_pack_bin(res, len);
msgpack_pack_bin_body(res, packed_node, len);
}
return 0;
}
METHOD(bin, Binary_encode, NodesRequest)
{
return pending;
}
METHOD(array, Binary_encode, NodesResponse)
{
return pending;
}
METHOD(array, Binary_encode, Packet_Word64)
{
return pending;
}
METHOD(u64, Binary_encode, PacketKind)
{
CHECK(args < sizeof packet_kinds / sizeof * packet_kinds);
SUCCESS {
uint8_t data[] = {packet_kinds[args]};
msgpack_pack_bin(res, sizeof data);
msgpack_pack_bin_body(res, data, sizeof data);
}
return 0;
}
METHOD(u64, Binary_encode, PingPacket)
{
return pending;
}
METHOD(bin, Binary_encode, PlainText)
{
return pending;
}
METHOD(u64, Binary_encode, PortNumber)
{
SUCCESS {
if (args <= UINT16_MAX)
{
uint16_t port = ntohs(args);
msgpack_pack_bin(res, 2);
msgpack_pack_bin_body(res, &port, 2);
} else {
msgpack_pack_nil(res);
}
}
return 0;
}
METHOD(array, Binary_encode, RpcPacket_Word64)
{
return pending;
}
METHOD(array, Binary_encode, SocketAddress)
{
return pending;
}
METHOD(u64, Binary_encode, TransportProtocol)
{
return pending;
}
METHOD(array, Binary, encode)
{
CHECK_SIZE(args, 2);
CHECK_TYPE(args.ptr[0], MSGPACK_OBJECT_STR);
msgpack_object_str type = args.ptr[0].via.str;
#define DISPATCH(TYPE, UTYPE, LTYPE) \
do { \
if (type.size == sizeof #TYPE - 1 && method_cmp(type.ptr, #TYPE, type.size) == 0) { \
CHECK_TYPE(args.ptr[1], MSGPACK_OBJECT_##UTYPE); \
return Binary_encode_##TYPE(args.ptr[1].via.LTYPE, res); \
} \
} while (0)
DISPATCH(CipherText, BIN, bin);
DISPATCH(DhtPacket, ARRAY, array);
DISPATCH(HostAddress, ARRAY, array);
DISPATCH(Word64, POSITIVE_INTEGER, u64);
DISPATCH(Key_PublicKey, BIN, bin);
DISPATCH(KeyPair, ARRAY, array);
DISPATCH(NodeInfo, ARRAY, array);
DISPATCH(NodesRequest, BIN, bin);
DISPATCH(NodesResponse, ARRAY, array);
DISPATCH(Packet_Word64, ARRAY, array);
DISPATCH(PacketKind, POSITIVE_INTEGER, u64);
DISPATCH(PingPacket, POSITIVE_INTEGER, u64);
DISPATCH(PlainText, BIN, bin);
DISPATCH(PortNumber, POSITIVE_INTEGER, u64);
DISPATCH(RpcPacket_Word64, ARRAY, array);
DISPATCH(SocketAddress, ARRAY, array);
DISPATCH(TransportProtocol, POSITIVE_INTEGER, u64);
#undef DISPATCH
return unimplemented;
}
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