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#include <Core/MySQL/PacketsConnection.h>
#include <IO/ReadHelpers.h>
#include <IO/WriteHelpers.h>
#include <Core/MySQL/PacketsGeneric.h>
namespace DB
{
namespace MySQLProtocol
{
using namespace Generic;
namespace ConnectionPhase
{
static const size_t SCRAMBLE_LENGTH = 20;
static const size_t AUTH_PLUGIN_DATA_PART_1_LENGTH = 8;
Handshake::Handshake() : connection_id(0x00), capability_flags(0x00), character_set(0x00), status_flags(0x00)
{
}
Handshake::Handshake(
uint32_t capability_flags_, uint32_t connection_id_,
String server_version_, String auth_plugin_name_, String auth_plugin_data_, uint8_t charset_)
: protocol_version(0xa), server_version(std::move(server_version_)), connection_id(connection_id_), capability_flags(capability_flags_),
character_set(charset_), status_flags(0), auth_plugin_name(std::move(auth_plugin_name_)),
auth_plugin_data(std::move(auth_plugin_data_))
{
}
size_t Handshake::getPayloadSize() const
{
return 26 + server_version.size() + auth_plugin_data.size() + auth_plugin_name.size();
}
void Handshake::readPayloadImpl(ReadBuffer & payload)
{
payload.readStrict(reinterpret_cast<char *>(&protocol_version), 1);
readNullTerminated(server_version, payload);
payload.readStrict(reinterpret_cast<char *>(&connection_id), 4);
auth_plugin_data.resize(AUTH_PLUGIN_DATA_PART_1_LENGTH);
payload.readStrict(auth_plugin_data.data(), AUTH_PLUGIN_DATA_PART_1_LENGTH);
payload.ignore(1);
payload.readStrict(reinterpret_cast<char *>(&capability_flags), 2);
payload.readStrict(reinterpret_cast<char *>(&character_set), 1);
payload.readStrict(reinterpret_cast<char *>(&status_flags), 2);
payload.readStrict((reinterpret_cast<char *>(&capability_flags)) + 2, 2);
UInt8 auth_plugin_data_length = 0;
if (capability_flags & Capability::CLIENT_PLUGIN_AUTH)
{
payload.readStrict(reinterpret_cast<char *>(&auth_plugin_data_length), 1);
}
else
{
payload.ignore(1);
}
payload.ignore(10);
if (capability_flags & Capability::CLIENT_SECURE_CONNECTION)
{
UInt8 part2_length = (SCRAMBLE_LENGTH - AUTH_PLUGIN_DATA_PART_1_LENGTH);
auth_plugin_data.resize(SCRAMBLE_LENGTH);
payload.readStrict(auth_plugin_data.data() + AUTH_PLUGIN_DATA_PART_1_LENGTH, part2_length);
payload.ignore(1);
}
if (capability_flags & Capability::CLIENT_PLUGIN_AUTH)
{
readNullTerminated(auth_plugin_name, payload);
}
}
void Handshake::writePayloadImpl(WriteBuffer & buffer) const
{
buffer.write(static_cast<char>(protocol_version));
writeNulTerminatedString(server_version, buffer);
buffer.write(reinterpret_cast<const char *>(&connection_id), 4);
writeNulTerminatedString(auth_plugin_data.substr(0, AUTH_PLUGIN_DATA_PART_1_LENGTH), buffer);
buffer.write(reinterpret_cast<const char *>(&capability_flags), 2);
buffer.write(reinterpret_cast<const char *>(&character_set), 1);
buffer.write(reinterpret_cast<const char *>(&status_flags), 2);
buffer.write((reinterpret_cast<const char *>(&capability_flags)) + 2, 2);
buffer.write(static_cast<char>(auth_plugin_data.size()));
writeChar(0x0, 10, buffer);
writeString(auth_plugin_data.substr(AUTH_PLUGIN_DATA_PART_1_LENGTH, auth_plugin_data.size() - AUTH_PLUGIN_DATA_PART_1_LENGTH), buffer);
writeString(auth_plugin_name, buffer);
writeChar(0x0, 1, buffer);
}
HandshakeResponse::HandshakeResponse() : capability_flags(0x00), max_packet_size(0x00), character_set(0x00)
{
}
HandshakeResponse::HandshakeResponse(
UInt32 capability_flags_, UInt32 max_packet_size_, UInt8 character_set_, const String & username_, const String & database_,
const String & auth_response_, const String & auth_plugin_name_)
: capability_flags(capability_flags_), max_packet_size(max_packet_size_), character_set(character_set_), username(username_),
database(database_), auth_response(auth_response_), auth_plugin_name(auth_plugin_name_)
{
}
size_t HandshakeResponse::getPayloadSize() const
{
size_t size = 0;
size += 4 + 4 + 1 + 23;
size += username.size() + 1;
if (capability_flags & CLIENT_PLUGIN_AUTH_LENENC_CLIENT_DATA)
{
size += getLengthEncodedStringSize(auth_response);
}
else if (capability_flags & CLIENT_SECURE_CONNECTION)
{
size += (1 + auth_response.size());
}
else
{
size += (auth_response.size() + 1);
}
if (capability_flags & CLIENT_CONNECT_WITH_DB)
{
size += (database.size() + 1);
}
if (capability_flags & CLIENT_PLUGIN_AUTH)
{
size += (auth_plugin_name.size() + 1);
}
return size;
}
void HandshakeResponse::readPayloadImpl(ReadBuffer & payload)
{
payload.readStrict(reinterpret_cast<char *>(&capability_flags), 4);
payload.readStrict(reinterpret_cast<char *>(&max_packet_size), 4);
payload.readStrict(reinterpret_cast<char *>(&character_set), 1);
payload.ignore(23);
readNullTerminated(username, payload);
if (capability_flags & CLIENT_PLUGIN_AUTH_LENENC_CLIENT_DATA)
{
readLengthEncodedString(auth_response, payload);
}
else if (capability_flags & CLIENT_SECURE_CONNECTION)
{
char len;
payload.readStrict(len);
auth_response.resize(static_cast<unsigned int>(len));
payload.readStrict(auth_response.data(), len);
}
else
{
readNullTerminated(auth_response, payload);
}
if (capability_flags & CLIENT_CONNECT_WITH_DB)
{
readNullTerminated(database, payload);
}
if (capability_flags & CLIENT_PLUGIN_AUTH)
{
readNullTerminated(auth_plugin_name, payload);
}
}
void HandshakeResponse::writePayloadImpl(WriteBuffer & buffer) const
{
buffer.write(reinterpret_cast<const char *>(&capability_flags), 4);
buffer.write(reinterpret_cast<const char *>(&max_packet_size), 4);
buffer.write(reinterpret_cast<const char *>(&character_set), 1);
writeChar(0x0, 23, buffer);
writeNulTerminatedString(username, buffer);
if (capability_flags & CLIENT_PLUGIN_AUTH_LENENC_CLIENT_DATA)
{
writeLengthEncodedString(auth_response, buffer);
}
else if (capability_flags & CLIENT_SECURE_CONNECTION)
{
writeChar(auth_response.size(), buffer);
writeString(auth_response.data(), auth_response.size(), buffer);
}
else
{
writeNulTerminatedString(auth_response, buffer);
}
if (capability_flags & CLIENT_CONNECT_WITH_DB)
{
writeNulTerminatedString(database, buffer);
}
if (capability_flags & CLIENT_PLUGIN_AUTH)
{
writeNulTerminatedString(auth_plugin_name, buffer);
}
}
AuthSwitchRequest::AuthSwitchRequest(String plugin_name_, String auth_plugin_data_)
: plugin_name(std::move(plugin_name_)), auth_plugin_data(std::move(auth_plugin_data_))
{
}
size_t AuthSwitchRequest::getPayloadSize() const
{
return 2 + plugin_name.size() + auth_plugin_data.size();
}
void AuthSwitchRequest::writePayloadImpl(WriteBuffer & buffer) const
{
buffer.write(0xfe);
writeNulTerminatedString(plugin_name, buffer);
writeString(auth_plugin_data, buffer);
}
void AuthSwitchResponse::readPayloadImpl(ReadBuffer & payload)
{
readStringUntilEOF(value, payload);
}
size_t AuthMoreData::getPayloadSize() const
{
return 1 + data.size();
}
void AuthMoreData::writePayloadImpl(WriteBuffer & buffer) const
{
buffer.write(0x01);
writeString(data, buffer);
}
}
}
}
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