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#include <Core/MySQL/PacketsGeneric.h>
#include <IO/ReadHelpers.h>
#include <IO/WriteHelpers.h>
namespace DB
{
namespace MySQLProtocol
{
namespace Generic
{
static const size_t MYSQL_ERRMSG_SIZE = 512;
void SSLRequest::readPayloadImpl(ReadBuffer & buf)
{
buf.readStrict(reinterpret_cast<char *>(&capability_flags), 4);
buf.readStrict(reinterpret_cast<char *>(&max_packet_size), 4);
buf.readStrict(reinterpret_cast<char *>(&character_set), 1);
}
OKPacket::OKPacket(uint32_t capabilities_)
: header(0x00), capabilities(capabilities_), affected_rows(0x00), last_insert_id(0x00), status_flags(0x00)
{
}
OKPacket::OKPacket(
uint8_t header_, uint32_t capabilities_, uint64_t affected_rows_, uint32_t status_flags_, int16_t warnings_,
String session_state_changes_, String info_)
: header(header_), capabilities(capabilities_), affected_rows(affected_rows_), last_insert_id(0), warnings(warnings_),
status_flags(status_flags_), session_state_changes(std::move(session_state_changes_)), info(std::move(info_))
{
}
size_t OKPacket::getPayloadSize() const
{
size_t result = 2 + getLengthEncodedNumberSize(affected_rows);
if (capabilities & CLIENT_PROTOCOL_41)
{
result += 4;
}
else if (capabilities & CLIENT_TRANSACTIONS)
{
result += 2;
}
if (capabilities & CLIENT_SESSION_TRACK)
{
result += getLengthEncodedStringSize(info);
if (status_flags & SERVER_SESSION_STATE_CHANGED)
result += getLengthEncodedStringSize(session_state_changes);
}
else
{
result += info.size();
}
return result;
}
void OKPacket::readPayloadImpl(ReadBuffer & payload)
{
payload.readStrict(reinterpret_cast<char *>(&header), 1);
affected_rows = readLengthEncodedNumber(payload);
last_insert_id = readLengthEncodedNumber(payload);
if (capabilities & CLIENT_PROTOCOL_41)
{
payload.readStrict(reinterpret_cast<char *>(&status_flags), 2);
payload.readStrict(reinterpret_cast<char *>(&warnings), 2);
}
else if (capabilities & CLIENT_TRANSACTIONS)
{
payload.readStrict(reinterpret_cast<char *>(&status_flags), 2);
}
if (capabilities & CLIENT_SESSION_TRACK)
{
readLengthEncodedString(info, payload);
if (status_flags & SERVER_SESSION_STATE_CHANGED)
{
readLengthEncodedString(session_state_changes, payload);
}
}
else
{
readString(info, payload);
}
}
void OKPacket::writePayloadImpl(WriteBuffer & buffer) const
{
buffer.write(header);
writeLengthEncodedNumber(affected_rows, buffer);
writeLengthEncodedNumber(last_insert_id, buffer); /// last insert-id
if (capabilities & CLIENT_PROTOCOL_41)
{
buffer.write(reinterpret_cast<const char *>(&status_flags), 2);
buffer.write(reinterpret_cast<const char *>(&warnings), 2);
}
else if (capabilities & CLIENT_TRANSACTIONS)
{
buffer.write(reinterpret_cast<const char *>(&status_flags), 2);
}
if (capabilities & CLIENT_SESSION_TRACK)
{
writeLengthEncodedString(info, buffer);
if (status_flags & SERVER_SESSION_STATE_CHANGED)
writeLengthEncodedString(session_state_changes, buffer);
}
else
{
writeString(info, buffer);
}
}
EOFPacket::EOFPacket() : warnings(0x00), status_flags(0x00)
{
}
EOFPacket::EOFPacket(int warnings_, int status_flags_)
: warnings(warnings_), status_flags(status_flags_)
{
}
size_t EOFPacket::getPayloadSize() const
{
return 5;
}
void EOFPacket::readPayloadImpl(ReadBuffer & payload)
{
payload.readStrict(reinterpret_cast<char *>(&header), 1);
assert(header == 0xfe);
payload.readStrict(reinterpret_cast<char *>(&warnings), 2);
payload.readStrict(reinterpret_cast<char *>(&status_flags), 2);
}
void EOFPacket::writePayloadImpl(WriteBuffer & buffer) const
{
buffer.write(header); // EOF header
buffer.write(reinterpret_cast<const char *>(&warnings), 2);
buffer.write(reinterpret_cast<const char *>(&status_flags), 2);
}
void AuthSwitchPacket::readPayloadImpl(ReadBuffer & payload)
{
payload.readStrict(reinterpret_cast<char *>(&header), 1);
assert(header == 0xfe);
readStringUntilEOF(plugin_name, payload);
}
ERRPacket::ERRPacket() : error_code(0x00)
{
}
ERRPacket::ERRPacket(int error_code_, String sql_state_, String error_message_)
: error_code(error_code_), sql_state(std::move(sql_state_)), error_message(std::move(error_message_))
{
}
size_t ERRPacket::getPayloadSize() const
{
return 4 + sql_state.length() + std::min(error_message.length(), MYSQL_ERRMSG_SIZE);
}
void ERRPacket::readPayloadImpl(ReadBuffer & payload)
{
payload.readStrict(reinterpret_cast<char *>(&header), 1);
assert(header == 0xff);
payload.readStrict(reinterpret_cast<char *>(&error_code), 2);
/// SQL State [optional: # + 5bytes string]
UInt8 sharp = static_cast<unsigned char>(*payload.position());
if (sharp == 0x23)
{
payload.ignore(1);
sql_state.resize(5);
payload.readStrict(reinterpret_cast<char *>(sql_state.data()), 5);
}
readString(error_message, payload);
}
void ERRPacket::writePayloadImpl(WriteBuffer & buffer) const
{
buffer.write(header);
buffer.write(reinterpret_cast<const char *>(&error_code), 2);
buffer.write('#');
buffer.write(sql_state.data(), sql_state.length());
buffer.write(error_message.data(), std::min(error_message.length(), MYSQL_ERRMSG_SIZE));
}
ResponsePacket::ResponsePacket(UInt32 server_capability_flags_)
: ok(OKPacket(server_capability_flags_))
{
}
ResponsePacket::ResponsePacket(UInt32 server_capability_flags_, bool is_handshake_)
: ok(OKPacket(server_capability_flags_)), is_handshake(is_handshake_)
{
}
void ResponsePacket::readPayloadImpl(ReadBuffer & payload)
{
UInt16 header = static_cast<unsigned char>(*payload.position());
switch (header)
{
case PACKET_OK:
packetType = PACKET_OK;
ok.readPayloadWithUnpacked(payload);
break;
case PACKET_ERR:
packetType = PACKET_ERR;
err.readPayloadWithUnpacked(payload);
break;
case PACKET_EOF:
if (is_handshake)
{
packetType = PACKET_AUTH_SWITCH;
auth_switch.readPayloadWithUnpacked(payload);
}
else
{
packetType = PACKET_EOF;
eof.readPayloadWithUnpacked(payload);
}
break;
case PACKET_LOCALINFILE:
packetType = PACKET_LOCALINFILE;
break;
default:
packetType = PACKET_OK;
column_length = readLengthEncodedNumber(payload);
}
}
LengthEncodedNumber::LengthEncodedNumber(uint64_t value_) : value(value_)
{
}
size_t LengthEncodedNumber::getPayloadSize() const
{
return getLengthEncodedNumberSize(value);
}
void LengthEncodedNumber::writePayloadImpl(WriteBuffer & buffer) const
{
writeLengthEncodedNumber(value, buffer);
}
}
}
}
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