smysql.cc

/*
    PowerMail versatile mail receiver
    Copyright (C) 2002  PowerDNS.COM BV

    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.

    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
*/
/* Copyright 2001 Netherlabs BV, bert.hubert@netherlabs.nl. See LICENSE 
   for more information.
   $Id: smysql.cc,v 1.2 2002-12-04 16:32:49 ahu Exp $  */
#include "smysql.hh"
#include <string>
#include <iostream>

using namespace std;


SMySQL::SMySQL(const string &database, const string &host, const string &msocket, const string &user, 
	       const string &password)
{
  mysql_init(&d_db);
  if (!mysql_real_connect(&d_db, host.empty() ? 0 : host.c_str(), 
			  user.empty() ? 0 : user.c_str(), 
			  password.empty() ? 0 : password.c_str(),
			  database.c_str(), 0,
			  msocket.empty() ? 0 : msocket.c_str(),
			  0)) {
    throw sPerrorException("Unable to connect to database");
  }

}

SMySQL::~SMySQL()
{
  mysql_close(&d_db);
}

SSqlException SMySQL::sPerrorException(const string &reason)
{
  return SSqlException(reason+string(": ")+mysql_error(&d_db));
}

int SMySQL::doQuery(const string &query, result_t &result)
{
  result.clear();
  if(mysql_query(&d_db,query.c_str())) 
    throw sPerrorException("Failed to execute mysql_query");

  MYSQL_RES *rres;
    
  if(!(rres = mysql_use_result(&d_db)))
    throw sPerrorException("Failed on mysql_use_result");

  MYSQL_ROW rrow;

  int num=0;
  row_t row;

  while((rrow = mysql_fetch_row(rres))) {
    num++;
    row.clear();
    for(unsigned int i=0;i<mysql_num_fields(rres);i++)
      row.push_back(rrow[i] ?: "");
    
    result.push_back(row);
  }
  mysql_free_result(rres);
  return num;
}

string SMySQL::escape(const string &name)
{
  string a;

  for(string::const_iterator i=name.begin();i!=name.end();++i) {
    if(*i=='\'' || *i=='\\')
      a+='\\';
    a+=*i;
  }
  return a;
}


#if 0
int main()
{
  try {
    SMySQL s("kkfnetmail","127.0.0.1","readonly");
    SSql::result_t juh;
    
    int num=s.doQuery("select *, from mboxes", juh);
    cout<<num<<" responses"<<endl;
    
    for(int i=0;i<num;i++) {
      const SSql::row_t &row=juh[i];

      for(SSql::row_t::const_iterator j=row.begin();j!=row.end();++j)
	cout <<"'"<< *j<<"', ";
      cout<<endl;
    }
  }
  catch(SSqlException &e) {
    cerr<<e.txtReason()<<endl;
  }
}


#endif