/* -------------------------------------------------------------------------- */
/* Copyright 2002-2011, OpenNebula Project Leads (OpenNebula.org)             */
/*                                                                            */
/* Licensed under the Apache License, Version 2.0 (the "License"); you may    */
/* not use this file except in compliance with the License. You may obtain    */
/* a copy of the License at                                                   */
/*                                                                            */
/* http://www.apache.org/licenses/LICENSE-2.0                                 */
/*                                                                            */
/* Unless required by applicable law or agreed to in writing, software        */
/* distributed under the License is distributed on an "AS IS" BASIS,          */
/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.   */
/* See the License for the specific language governing permissions and        */
/* limitations under the License.                                             */
/* -------------------------------------------------------------------------- */

#include "PoolObjectSQL.h"
#include "PoolObjectAuth.h"
#include "SSLTools.h"

/* -------------------------------------------------------------------------- */
/* -------------------------------------------------------------------------- */

string& PoolObjectSQL::to_xml64(string &xml64)
{
    string *str64;
    
    to_xml(xml64);

    str64 = SSLTools::base64_encode(xml64);
   
    xml64 = *str64;

    delete str64;

    return xml64;
}

/* -------------------------------------------------------------------------- */
/* -------------------------------------------------------------------------- */

int PoolObjectSQL::select(SqlDB *db)
{
    ostringstream   oss;
    int             rc;
    int             boid;

    set_callback(
            static_cast<Callbackable::Callback>(&PoolObjectSQL::select_cb));

    oss << "SELECT body FROM " << table << " WHERE oid = " << oid;

    boid = oid;
    oid  = -1;

    rc = db->exec(oss, this);

    unset_callback();

    if ((rc != 0) || (oid != boid ))
    {
        return -1;
    }

    return 0;
}

/* -------------------------------------------------------------------------- */
/* -------------------------------------------------------------------------- */

int PoolObjectSQL::select(SqlDB *db, const string& _name, int _uid)
{
    ostringstream oss;

    int rc;
    char * sql_name;

    sql_name = db->escape_str(_name.c_str());

    if ( sql_name == 0 )
    {
        return -1;
    }

    set_callback(
            static_cast<Callbackable::Callback>(&PoolObjectSQL::select_cb));

    oss << "SELECT body FROM " << table << " WHERE name = '" << sql_name << "'";

    if ( _uid != -1 )
    {
        oss << " AND uid = " << _uid;
    }

    name  = "";
    uid   = -1;

    rc = db->exec(oss, this);

    unset_callback();

    db->free_str(sql_name);

    if ((rc != 0) || (_name != name) || (_uid != -1 && _uid != uid))
    {
        return -1;
    }

    return 0;
}

/* -------------------------------------------------------------------------- */
/* -------------------------------------------------------------------------- */

int PoolObjectSQL::drop(SqlDB *db)
{
    ostringstream oss;
    int rc;

    oss << "DELETE FROM " << table << " WHERE oid=" << oid;

    rc = db->exec(oss);

    if ( rc == 0 )
    {
        set_valid(false);
    }

    return rc;
}

/* -------------------------------------------------------------------------- */
/* -------------------------------------------------------------------------- */

const char * PoolObjectSQL::error_attribute_name = "ERROR";

void PoolObjectSQL::set_template_error_message(const string& message)
{
    VectorAttribute *  attr;
    map<string,string> error_value;
    
    char   str[26];
    time_t the_time;

    the_time = time(NULL);

#ifdef SOLARIS
    ctime_r(&(the_time),str,sizeof(char)*26);
#else
    ctime_r(&(the_time),str);
#endif

    str[24] = '\0'; // Get rid of final enter character

    error_value.insert(make_pair("TIMESTAMP",str));
    error_value.insert(make_pair("MESSAGE",message));

    attr = new VectorAttribute(error_attribute_name,error_value);

    obj_template->set(attr);
}

/* -------------------------------------------------------------------------- */
/* -------------------------------------------------------------------------- */

int PoolObjectSQL::replace_template(const string& tmpl_str, string& error)
{
    Template * new_tmpl  = get_new_template();
    char *     error_msg = 0;

    if ( new_tmpl == 0 )
    {
        error = "Can not allocate a new template";
        return -1;
    }
    
    if ( new_tmpl->parse(tmpl_str, &error_msg) != 0 )
    {
        ostringstream oss;
        
        oss << "Parse error";
         
        if (error_msg != 0)
        {
            oss << ": " << error_msg;
        }
        
        error = oss.str();

        return -1;
    }

    delete obj_template;

    obj_template = new_tmpl;

    return 0;
} 

/* -------------------------------------------------------------------------- */
/* -------------------------------------------------------------------------- */

string& PoolObjectSQL::perms_to_xml(string& xml) const
{
    ostringstream   oss;

    oss <<
        "<PERMISSIONS>" <<
            "<OWNER_U>" << owner_u << "</OWNER_U>"  <<
            "<OWNER_M>" << owner_m << "</OWNER_M>"  <<
            "<OWNER_A>" << owner_a << "</OWNER_A>"  <<
            "<GROUP_U>" << group_u << "</GROUP_U>"  <<
            "<GROUP_M>" << group_m << "</GROUP_M>"  <<
            "<GROUP_A>" << group_a << "</GROUP_A>"  <<
            "<OTHER_U>" << other_u << "</OTHER_U>"  <<
            "<OTHER_M>" << other_m << "</OTHER_M>"  <<
            "<OTHER_A>" << other_a << "</OTHER_A>"  <<
        "</PERMISSIONS>";

    xml = oss.str();
    return xml;
}

/* -------------------------------------------------------------------------- */
/* -------------------------------------------------------------------------- */

int PoolObjectSQL::perms_from_xml()
{
    int rc = 0;

    rc += xpath(owner_u, "/*/PERMISSIONS/OWNER_U", 0);
    rc += xpath(owner_m, "/*/PERMISSIONS/OWNER_M", 0);
    rc += xpath(owner_a, "/*/PERMISSIONS/OWNER_A", 0);

    rc += xpath(group_u, "/*/PERMISSIONS/GROUP_U", 0);
    rc += xpath(group_m, "/*/PERMISSIONS/GROUP_M", 0);
    rc += xpath(group_a, "/*/PERMISSIONS/GROUP_A", 0);

    rc += xpath(other_u, "/*/PERMISSIONS/OTHER_U", 0);
    rc += xpath(other_m, "/*/PERMISSIONS/OTHER_M", 0);
    rc += xpath(other_a, "/*/PERMISSIONS/OTHER_A", 0);

    return rc;
}

/* -------------------------------------------------------------------------- */
/* -------------------------------------------------------------------------- */

PoolObjectAuth* PoolObjectSQL::get_permissions()
{
    return new PoolObjectAuth(this);
}

/* -------------------------------------------------------------------------- */
/* -------------------------------------------------------------------------- */