km_bdb_val.c

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/*
 * $Id$
 *
 * db_berkeley module, portions of this code were templated using
 * the dbtext and postgres modules.

 * Copyright (C) 2007 Cisco Systems
 *
 * This file is part of SIP-router, a free SIP server.
 *
 * SIP-router 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
 *
 * SIP-router 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
 * 
 * History:
 * --------
 * 2007-09-19  genesis (wiquan)
 */
 
#include "../../lib/srdb1/db_val.h"
#include "../../lib/srdb1/db_ut.h"
#include "km_db_berkeley.h"
#include "km_bdb_res.h"
#include "km_bdb_val.h"
#include <string.h>

inline int km_bdb_time2str(time_t _v, char* _s, int* _l)
{
        struct tm* t;
        int l;

        if ((!_s) || (!_l) || (*_l < 2)) {
                LM_ERR("Invalid parameter value\n");
                return -1;
        }

//      *_s++ = '\'';

        /* Convert time_t structure to format accepted by the database */
        t = localtime(&_v);
        l = strftime(_s, *_l -1, "%Y-%m-%d %H:%M:%S", t);

        if (l == 0) {
                LM_ERR("Error during time conversion\n");
                /* the value of _s is now unspecified */
                _s = NULL;
                _l = 0;
                return -1;
        }
        *_l = l;

//      *(_s + l) = '\'';
//      *_l = l + 2;
        return 0;
}

int bdb_str2val(db_type_t _t, db_val_t* _v, char* _s, int _l)
{

        static str dummy_string = {"", 0};

        if(!_s)
        {
                memset(_v, 0, sizeof(db_val_t));
                /* Initialize the string pointers to a dummy empty
                 * string so that we do not crash when the NULL flag
                 * is set but the module does not check it properly
                 */
                VAL_STRING(_v) = dummy_string.s;
                VAL_STR(_v) = dummy_string;
                VAL_BLOB(_v) = dummy_string;
                VAL_TYPE(_v) = _t;
                VAL_NULL(_v) = 1;
                return 0;
        }
        VAL_NULL(_v) = 0;

        switch(_t) {
        case DB1_INT:
                if (db_str2int(_s, &VAL_INT(_v)) < 0) {
                        LM_ERR("Error while converting INT value from string\n");
                        return -2;
                } else {
                        VAL_TYPE(_v) = DB1_INT;
                        return 0;
                }
                break;

        case DB1_BIGINT:
                        LM_ERR("BIGINT not supported");
                        return -1;

        case DB1_BITMAP:
                if (db_str2int(_s, &VAL_INT(_v)) < 0) {
                        LM_ERR("Error while converting BITMAP value from string\n");
                        return -3;
                } else {
                        VAL_TYPE(_v) = DB1_BITMAP;
                        return 0;
                }
                break;

        case DB1_DOUBLE:
                if (db_str2double(_s, &VAL_DOUBLE(_v)) < 0) {
                        LM_ERR("Error while converting DOUBLE value from string\n");
                        return -4;
                } else {
                        VAL_TYPE(_v) = DB1_DOUBLE;
                        return 0;
                }
                break;

        case DB1_STRING:
                VAL_STRING(_v) = _s;
                VAL_TYPE(_v) = DB1_STRING;
                VAL_FREE(_v) = 1;
                
                if( strlen(_s)==4 && !strncasecmp(_s, "NULL", 4) )
                        VAL_NULL(_v) = 1;
                
                return 0;

        case DB1_STR:
                VAL_STR(_v).s = (char*)_s;
                VAL_STR(_v).len = _l;
                VAL_TYPE(_v) = DB1_STR;
                VAL_FREE(_v) = 1;

                if( strlen(_s)==4 && !strncasecmp(_s, "NULL", 4) )
                        VAL_NULL(_v) = 1;

                return 0;

        case DB1_DATETIME:
                if (db_str2time(_s, &VAL_TIME(_v)) < 0) {
                        LM_ERR("Error converting datetime\n");
                        return -5;
                } else {
                        VAL_TYPE(_v) = DB1_DATETIME;
                        return 0;
                }
                break;

        case DB1_BLOB:
                VAL_BLOB(_v).s = _s;
                VAL_TYPE(_v) = DB1_BLOB;
                LM_DBG("got blob len %d\n", _l);
                return 0;
        }

        return -6;
}


/*
 * Used when converting result from a query
 */
int km_bdb_val2str(db_val_t* _v, char* _s, int* _len)
{
        int l;

        if (VAL_NULL(_v)) 
        {
                *_len = snprintf(_s, *_len, "NULL");
                return 0;
        }
        
        switch(VAL_TYPE(_v)) {
        case DB1_INT:
                if (db_int2str(VAL_INT(_v), _s, _len) < 0) {
                        LM_ERR("Error while converting int to string\n");
                        return -2;
                } else {
                        LM_DBG("Converted int to string\n");
                        return 0;
                }
                break;

        case DB1_BITMAP:
                if (db_int2str(VAL_INT(_v), _s, _len) < 0) {
                        LM_ERR("Error while converting bitmap to string\n");
                        return -3;
                } else {
                        LM_DBG("Converted bitmap to string\n");
                        return 0;
                }
                break;

        case DB1_DOUBLE:
                if (db_double2str(VAL_DOUBLE(_v), _s, _len) < 0) {
                        LM_ERR("Error while converting double  to string\n");
                        return -3;
                } else {
                        LM_DBG("Converted double to string\n");
                        return 0;
                }
                break;

        case DB1_STRING:
                l = strlen(VAL_STRING(_v));
                if (*_len < l ) 
                {       LM_ERR("Destination buffer too short for string\n");
                        return -4;
                } 
                else 
                {       LM_DBG("Converted string to string\n");
                        strncpy(_s, VAL_STRING(_v) , l);
                        _s[l] = 0;
                        *_len = l;
                        return 0;
                }
                break;

        case DB1_STR:
                l = VAL_STR(_v).len;
                if (*_len < l) 
                {
                        LM_ERR("Destination buffer too short for str\n");
                        return -5;
                } 
                else 
                {
                        LM_DBG("Converted str to string\n");
                        strncpy(_s, VAL_STR(_v).s , VAL_STR(_v).len);
                        *_len = VAL_STR(_v).len;
                        return 0;
                }
                break;

        case DB1_DATETIME:
                if (km_bdb_time2str(VAL_TIME(_v), _s, _len) < 0) {
                        LM_ERR("Error while converting time_t to string\n");
                        return -6;
                } else {
                        LM_DBG("Converted time_t to string\n");
                        return 0;
                }
                break;

        case DB1_BLOB:
                l = VAL_BLOB(_v).len;
                if (*_len < l) 
                {
                        LM_ERR("Destination buffer too short for blob\n");
                        return -7;
                } 
                else 
                {
                        LM_DBG("Converting BLOB [%s]\n", _s);
                        _s = VAL_BLOB(_v).s;
                        *_len = 0;
                        return -8;
                }
                break;

        default:
                LM_DBG("Unknown data type\n");
                return -8;
        }
}