private byte[] MakeRequestPacket(uint reqMethod, string sql)
{
int bodyLen = 0;
int totalLen = 0;
if (sql.Length == 0)
{
throw new PDBException(PDBErrorCode.PdbE_SQL_ERROR, "SQL语句错误:执行的SQL语句不能为空");
}
byte[] tmpSql = Encoding.UTF8.GetBytes(sql);
bodyLen = tmpSql.Count();
totalLen = ProtoHeader.kHeadLen + bodyLen;
byte[] packetBuf = new byte[totalLen];
Array.Clear(packetBuf, 0, totalLen);
Array.Copy(tmpSql, 0, packetBuf, ProtoHeader.kHeadLen, tmpSql.Count());
uint bodyCrc = CRC.Crc32(packetBuf, ProtoHeader.kHeadLen, bodyLen);
ProtoHeader proHdr = new ProtoHeader(packetBuf);
proHdr.SetVersion(ProtoHeader.kProtoVersion);
proHdr.SetMethod(reqMethod);
proHdr.SetBodyLen((uint)bodyLen);
proHdr.SetReturnVal(0);
proHdr.SetRecordCnt(1);
proHdr.SetBodyCrc(bodyCrc);
proHdr.SetHeadCrc();
return(packetBuf);
}
private void Login()
{
byte[] loginPacket = new byte[ProtoHeader.kHeadLen + kUserNameLen + kPwdLen];
ProtoHeader proHdr = new ProtoHeader(loginPacket);
Array.Clear(loginPacket, 0, (loginPacket.Length));
byte[] nameArray = System.Text.Encoding.Default.GetBytes(UserName);
byte[] pwdArray = System.Text.Encoding.Default.GetBytes(Password);
if (nameArray.Length >= kUserNameLen)
{
throw new PDBException(PDBErrorCode.PdbE_INVALID_USER_NAME, "非法的用户名：用户名不合法");
}
for (int i = 0; i < nameArray.Length; i++)
{
loginPacket[ProtoHeader.kHeadLen + i] = nameArray[i];
}
UInt64 pwd64 = CRC.Crc64(pwdArray);
UInt32 pwd32 = (UInt32)(pwd64 & 0xFFFFFFFF);
IntTool.PutUint32(loginPacket, (ProtoHeader.kHeadLen + kUserNameLen), pwd32);
UInt32 bodyCrc = CRC.Crc32(loginPacket, ProtoHeader.kHeadLen, (kUserNameLen + kPwdLen));
proHdr.SetVersion(ProtoHeader.kProtoVersion);
proHdr.SetMethod(ProtoHeader.MethodCmdLoginReq);
proHdr.SetBodyLen((uint)(kUserNameLen + kPwdLen));
proHdr.SetReturnVal(0);
proHdr.SetRecordCnt((uint)0);
proHdr.SetBodyCrc(bodyCrc);
proHdr.SetHeadCrc();
Request(loginPacket);
byte[] resBuf = Recv();
ProtoHeader resHdr = new ProtoHeader(resBuf);
if (resHdr.GetMethod() != ProtoHeader.MethodCmdLoginRep)
{
throw new PDBException(PDBErrorCode.PdbE_PACKET_ERROR);
}
if (resHdr.GetReturnVal() != 0)
{
throw new PDBException(PDBErrorCode.PdbE_NET_ERROR, "网络错误：登录失败," + resHdr.GetReturnVal().ToString());
}
}