Esempio n. 1
0
//-------------------------------------------------------------------------------------
void TelnetHandler::onRecvInput()
{
	while (buffer_.size() > 0)
	{
		int c = (unsigned char)buffer_.front();
		buffer_.pop_front();

		switch(c)
		{
		case '\r':
			getingHistroyCmd_ = false;
			if(buffer_.size() > 0)
			{
				int cc = (unsigned char)buffer_.front();
				if(cc == '\n')
				{
					buffer_.pop_front();
					if(!processCommand())
						return;
				}
			}
			break;
		case 8:		// 退格
			sendDelChar();
			checkAfterStr();
			break;
		case ' ':	// 空格
		default:
			{
				std::string s = "";
				s += c;
				command_.insert(currPos_, s);
				currPos_++;
				
				if(!checkUDLR())
				{
					checkAfterStr();
				}
				break;
			}
		};
	}
}
Esempio n. 2
0
//-------------------------------------------------------------------------------------
void TelnetHandler::onRecvInput(const char *buffer, int size)
{
	int idx = 0;
	while (idx < size)
	{
		char c = buffer[idx++];

		switch(c)
		{
		case '\r':
			getingHistroyCmd_ = false;
			if (idx < size)
			{
				int cc = buffer[idx++];
				if(cc == '\n')
				{
					if(!processCommand())
						return;
				}
			}
			break;
		case 8:		// 退格
			if (currPos_ == 0)
			{
				resetStartPosition();
			}
			else
			{
				sendDelChar();
				checkAfterStr();
			}
			break;
		case 27:	// vt100命令码: 0x1b
		{
			std::string s = "";
			std::string vt100cmd(s + c);
			bool shouldBeContinue = true;

			while (shouldBeContinue && idx < size)
			{
				if (buffer[idx] == '\r')
					break;

				c = buffer[idx++];
				vt100cmd.append(s + c);
				switch (c)
				{
				case 'A': // 光标上移n行
				case 'B': // 光标下移n行
				case 'C': // 光标右移n列
				case 'D': // 光标左移n列
				case '~': // home、end等
					shouldBeContinue = false;
					break;

				case 'm': // 颜色等属性或命令
				case 'J': // 清屏
				case 'K': // 清除从光标到行尾的内容
				case 's': // 保存光标位置
				case 'u': // 恢复光标位置
				case 'l': // 隐藏光标
				case 'h': // 显示光标
				case 'H': // 设置光标位置
				default:
					break;
				}
			}

			if (!checkUDLR(vt100cmd))
			{
				// 把不认识的命令原样输出,但会把命令符改成“^”
				// 以避免客户端触发命令操作
				vt100cmd[0] = '^';
				command_.insert(currPos_, vt100cmd);
				currPos_ += vt100cmd.length();
				if (currPos_ == (int32)command_.length())
				{
					pEndPoint_->send(vt100cmd.c_str(), vt100cmd.size());
				}
				else
				{
					std::string s = command_.substr(currPos_ - vt100cmd.length(), command_.size() - currPos_ + vt100cmd.length());
					s += fmt::format("\33[{}D", command_.size() - currPos_);
					pEndPoint_->send(s.c_str(), s.size());
				}
			}
			break;
		}
		case 0x7f: // delete
			if (currPos_ < (int32)command_.length())
			{
				command_.erase(currPos_, 1);
				pEndPoint_->send(TELNET_CMD_DEL, strlen(TELNET_CMD_DEL));
				checkAfterStr();
			}
			break;
		default:
			{
				std::string s = "";
				s += c;
				command_.insert(currPos_, s);
				currPos_++;
				checkAfterStr();
				break;
			}
		};
	}
}