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AdcCommand.h

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/* 
 * Copyright (C) 2001-2005 Jacek Sieka, arnetheduck on gmail point com
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */

#ifndef ADC_COMMAND_H
#define ADC_COMMAND_H

#include "CID.h"
#include "SettingsManager.h"
#include "Exception.h"

STANDARD_EXCEPTION(ParseException);

class AdcCommand {
public:
      template<u_int32_t T>
      struct Type {
            enum { CMD = T };
      };

      enum Error {
            ERROR_GENERIC = 0,
            ERROR_HUB_GENERIC = 10,
            ERROR_HUB_FULL = 11,
            ERROR_HUB_DISABLED = 12,
            ERROR_LOGIN_GENERIC = 20,
            ERROR_NICK_INVALID = 21,
            ERROR_NICK_TAKEN = 22,
            ERROR_BAD_PASSWORD = 23,
            ERROR_CID_TAKEN = 24,
            ERROR_COMMAND_ACCESS = 25,
            ERROR_REGGED_ONLY = 26,
            ERROR_BANNED_GENERIC = 30,
            ERROR_PERM_BANNED = 31,
            ERROR_TEMP_BANNED = 32,
            ERROR_PROTOCOL_GENERIC = 40,
            ERROR_PROTOCOL_UNSUPPORTED = 41,
            ERROR_INF_MISSING = 42,
            ERROR_BAD_STATE = 43,
            ERROR_TRANSFER_GENERIC = 50,
            ERROR_FILE_NOT_AVAILABLE = 51,
            ERROR_FILE_PART_NOT_AVAILABLE = 52,
            ERROR_SLOTS_FULL = 53
      };

      enum Severity {
            SEV_SUCCESS = 0,
            SEV_RECOVERABLE = 1,
            SEV_FATAL = 2
      };

      static const char TYPE_ACTIVE = 'A';
      static const char TYPE_BROADCAST = 'B';
      static const char TYPE_CLIENT = 'C';
      static const char TYPE_DIRECT = 'D';
      static const char TYPE_INFO = 'I';
      static const char TYPE_HUB = 'H';
      static const char TYPE_PASSIVE = 'P';
      static const char TYPE_UDP = 'U';
#ifdef TARGET_I386
#define CMD(n, a, b, c) static const u_int32_t CMD_##n = (((u_int32_t)a) | (((u_int32_t)b)<<8) | (((u_int32_t)c)<<16)); typedef Type<CMD_##n> n
#else
#define CMD(n, a, b, c) static const u_int32_t CMD_##n = ((((u_int32_t)a)<<24) | (((u_int32_t)b)<<16) | (((u_int32_t)c)<<8)); typedef Type<CMD_##n> n
#endif
      CMD(SUP, 'S','U','P');
      CMD(STA, 'S','T','A');
      CMD(INF, 'I','N','F');
      CMD(MSG, 'M','S','G');
      CMD(SCH, 'S','C','H');
      CMD(RES, 'R','E','S');
      CMD(CTM, 'C','T','M');
      CMD(RCM, 'R','C','M');
      CMD(GPA, 'G','P','A');
      CMD(PAS, 'P','A','S');
      CMD(QUI, 'Q','U','I');
      CMD(DSC, 'D','S','C');
      CMD(GET, 'G','E','T');
      CMD(GFI, 'G','F','I');
      CMD(SND, 'S','N','D');
      CMD(NTD, 'N','T','D');
#undef CMD

      explicit AdcCommand(u_int32_t aCmd, char aType = TYPE_CLIENT) : cmdInt(aCmd), from(SETTING(CLIENT_ID)), type(aType) { }
      explicit AdcCommand(u_int32_t aCmd, const CID& aTarget) : cmdInt(aCmd), from(SETTING(CLIENT_ID)), to(aTarget), type(TYPE_DIRECT) { }

      explicit AdcCommand(const string& aLine, bool nmdc = false) throw(ParseException) : cmdInt(0), type(TYPE_CLIENT) {
            parse(aLine, nmdc);
      }

      void parse(const string& aLine, bool nmdc = false) throw(ParseException);

      u_int32_t getCommand() const { return cmdInt; }
      char getType() const { return type; }
      void setType(char t) { type = t; }

      StringList& getParameters() { return parameters; }
      const StringList& getParameters() const { return parameters; }

      string toString(bool nmdc = false, bool old = false) const;

      AdcCommand& addParam(const string& name, const string& value) {
            parameters.push_back(name);
            parameters.back() += value;
            return *this;
      }
      AdcCommand& addParam(const string& str) {
            parameters.push_back(str);
            return *this;
      }
      const string& getParam(size_t n) const {
            return getParameters().size() > n ? getParameters()[n] : Util::emptyString;
      }
      /** Return a named parameter where the name is a two-letter code */
      bool getParam(const char* name, size_t start, string& ret) const;
      bool hasFlag(const char* name, size_t start) const;
      static u_int16_t toCode(const char* x) { return *((u_int16_t*)x); }

      bool operator==(u_int32_t aCmd) { return cmdInt == aCmd; }

      static string escape(const string& str, bool old) {
            string tmp = str;
            string::size_type i = 0;
            while( (i = tmp.find_first_of(" \n\\", i)) != string::npos) {
                  if(old) {
                        tmp.insert(i, "\\");
                  } else {
                        switch(tmp[i]) {
                        case ' ': tmp.replace(i, 1, "\\s"); break;
                        case '\n': tmp.replace(i, 1, "\\n"); break;
                        case '\\': tmp.replace(i, 1, "\\\\"); break;
                        }
                  }
                  i+=2;
            }
            return tmp;
      }
      const CID& getTo() const { return to; }
      void setTo(const CID& cid) { to = cid; }
      const CID& getFrom() const { return from; }

private:
      StringList parameters;
      union {
            char cmdChar[4];
            u_int8_t cmd[4];
            u_int32_t cmdInt;
      };
      CID from;
      CID to;
      char type;

};

template<class T>
class CommandHandler {
public:
      void dispatch(const string& aLine, bool nmdc = false) {
            try {
                  AdcCommand c(aLine, nmdc);

#define CMD(n) case AdcCommand::CMD_##n: ((T*)this)->handle(AdcCommand::n(), c); break;
                  switch(c.getCommand()) {
                        CMD(SUP);
                        CMD(STA);
                        CMD(INF);
                        CMD(MSG);
                        CMD(SCH);
                        CMD(RES);
                        CMD(CTM);
                        CMD(RCM);
                        CMD(GPA);
                        CMD(PAS);
                        CMD(QUI);
                        CMD(DSC);
                        CMD(GET);
                        CMD(GFI);
                        CMD(SND);
                        CMD(NTD);
                  default: 
                        dcdebug("Unknown ADC command: %.50s\n", aLine.c_str());
                        break;
#undef CMD

                  }
            } catch(const ParseException&) {
                  dcdebug("Invalid ADC command: %.50s\n", aLine.c_str());
                  return;
            }
      }
};

#endif // ADC_COMMAND_H
/**
* @file
* $Id: AdcCommand.h,v 1.3 2005/11/16 21:35:59 mickeg Exp $
*/

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