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272 lines
6.6 KiB
272 lines
6.6 KiB
/*
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* Copyright (C) 2001-2003 FhG Fokus
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* Copyright (C) 2008-2009 1&1 Internet AG
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*
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* This file is part of Kamailio, a free SIP server.
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*
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* Kamailio is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version
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*
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* Kamailio is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "db_ut.h"
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#include <stdio.h>
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#include <time.h>
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/*!
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* \brief Convert a str to a db value
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*
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* Convert a str to a db value, copy strings if _cpy is not zero.
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* Copying is not necessary if the result from the database client library
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* is freed after the result inside the server is processed. If the result
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* is freed earlier, e.g. because its saved inside some temporary storage,
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* then it must be copied in order to be use it reliable.
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*
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* \param _t destination value type
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* \param _v destination value
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* \param _s source string
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* \param _l string length
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* \param _cpy when set to zero does not copy strings, otherwise copy strings
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* \return 0 on success, negative on error
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*/
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int db_str2val(const db_type_t _t, db_val_t* _v, const char* _s, const int _l,
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const unsigned int _cpy)
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{
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static str dummy_string = {"", 0};
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static char dummy_string_buf[2];
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if (!_v) {
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LM_ERR("invalid parameter value\n");
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return -1;
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}
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/* A NULL string is a SQL NULL value, otherwise its an empty value */
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if (!_s) {
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LM_DBG("converting NULL value\n");
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memset(_v, 0, sizeof(db_val_t));
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/* Initialize the string pointers to a dummy empty
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* string so that we do not crash when the NULL flag
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* is set but the module does not check it properly
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*/
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dummy_string_buf[0] = '\0';
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dummy_string.s = dummy_string_buf;
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VAL_STRING(_v) = dummy_string.s;
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VAL_STR(_v) = dummy_string;
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VAL_BLOB(_v) = dummy_string;
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VAL_TYPE(_v) = _t;
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VAL_NULL(_v) = 1;
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return 0;
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}
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VAL_NULL(_v) = 0;
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switch(_t) {
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case DB1_INT:
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LM_DBG("converting INT [%s]\n", _s);
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if (db_str2int(_s, &VAL_INT(_v)) < 0) {
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LM_ERR("error while converting integer value from string\n");
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return -2;
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} else {
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VAL_TYPE(_v) = DB1_INT;
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return 0;
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}
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break;
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case DB1_BIGINT:
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LM_DBG("converting BIGINT [%s]\n", _s);
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if (db_str2longlong(_s, &VAL_BIGINT(_v)) < 0) {
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LM_ERR("error while converting big integer value from string\n");
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return -3;
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} else {
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VAL_TYPE(_v) = DB1_BIGINT;
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return 0;
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}
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break;
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case DB1_BITMAP:
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LM_DBG("converting BITMAP [%s]\n", _s);
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if (db_str2int(_s, &VAL_INT(_v)) < 0) {
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LM_ERR("error while converting bitmap value from string\n");
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return -4;
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} else {
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VAL_TYPE(_v) = DB1_BITMAP;
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return 0;
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}
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break;
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case DB1_DOUBLE:
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LM_DBG("converting DOUBLE [%s]\n", _s);
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if (db_str2double(_s, &VAL_DOUBLE(_v)) < 0) {
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LM_ERR("error while converting double value from string\n");
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return -5;
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} else {
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VAL_TYPE(_v) = DB1_DOUBLE;
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return 0;
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}
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break;
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case DB1_STRING:
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LM_DBG("converting STRING [%s]\n", _s);
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if (_cpy == 0) {
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VAL_STRING(_v) = _s;
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} else {
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VAL_STRING(_v) = pkg_malloc(_l + 1);
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if (VAL_STRING(_v) == NULL) {
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LM_ERR("no private memory left\n");
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return -6;
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}
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LM_DBG("allocate %d bytes memory for STRING at %p\n", _l + 1, VAL_STRING(_v));
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strncpy((char*)VAL_STRING(_v), _s, _l);
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((char*)VAL_STRING(_v))[_l] = '\0';
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VAL_FREE(_v) = 1;
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}
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VAL_TYPE(_v) = DB1_STRING;
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return 0;
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case DB1_STR:
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LM_DBG("converting STR [%.*s]\n", _l, _s);
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if (_cpy == 0) {
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VAL_STR(_v).s = (char*) _s;
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} else {
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VAL_STR(_v).s = pkg_malloc(_l);
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if (VAL_STR(_v).s == NULL) {
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LM_ERR("no private memory left\n");
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return -7;
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}
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LM_DBG("allocate %d bytes memory for STR at %p\n", _l, VAL_STR(_v).s);
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strncpy(VAL_STR(_v).s, _s, _l);
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VAL_FREE(_v) = 1;
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}
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VAL_STR(_v).len = _l;
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VAL_TYPE(_v) = DB1_STR;
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return 0;
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case DB1_DATETIME:
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LM_DBG("converting DATETIME [%s]\n", _s);
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if (db_str2time(_s, &VAL_TIME(_v)) < 0) {
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LM_ERR("error while converting datetime value from string\n");
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return -8;
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} else {
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VAL_TYPE(_v) = DB1_DATETIME;
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return 0;
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}
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break;
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case DB1_BLOB:
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LM_DBG("converting BLOB [%.*s]\n", _l, _s);
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if (_cpy == 0) {
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VAL_BLOB(_v).s = (char*) _s;
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} else {
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VAL_BLOB(_v).s = pkg_malloc(_l);
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if (VAL_BLOB(_v).s == NULL) {
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LM_ERR("no private memory left\n");
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return -9;
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}
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LM_DBG("allocate %d bytes memory for BLOB at %p\n", _l, VAL_BLOB(_v).s);
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strncpy(VAL_BLOB(_v).s, _s, _l);
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VAL_FREE(_v) = 1;
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}
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VAL_BLOB(_v).len = _l;
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VAL_TYPE(_v) = DB1_BLOB;
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return 0;
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default:
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return -10;
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}
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return -10;
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}
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/*!
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* \brief Convert a numerical value to a string
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*
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* Convert a numerical value to a string, used when converting result from a query.
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* Implement common functionality needed from the databases, does parameter checking.
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* \param _c database connection
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* \param _v source value
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* \param _s target string
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* \param _len target string length
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* \return 0 on success, negative on error, 1 if value must be converted by other means
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*/
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int db_val2str(const db1_con_t* _c, const db_val_t* _v, char* _s, int* _len)
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{
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if (!_c || !_v || !_s || !_len || !*_len) {
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LM_ERR("invalid parameter value\n");
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return -1;
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}
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if (VAL_NULL(_v)) {
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if (*_len < sizeof("NULL")) {
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LM_ERR("buffer too small\n");
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return -1;
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}
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*_len = snprintf(_s, *_len, "NULL");
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return 0;
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}
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switch(VAL_TYPE(_v)) {
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case DB1_INT:
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if (db_int2str(VAL_INT(_v), _s, _len) < 0) {
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LM_ERR("error while converting string to int\n");
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return -2;
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} else {
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return 0;
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}
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break;
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case DB1_BIGINT:
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if (db_longlong2str(VAL_BIGINT(_v), _s, _len) < 0) {
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LM_ERR("error while converting string to big int\n");
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return -3;
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} else {
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return 0;
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}
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break;
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case DB1_BITMAP:
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if (db_int2str(VAL_BITMAP(_v), _s, _len) < 0) {
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LM_ERR("error while converting string to int\n");
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return -4;
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} else {
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return 0;
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}
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break;
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case DB1_DOUBLE:
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if (db_double2str(VAL_DOUBLE(_v), _s, _len) < 0) {
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LM_ERR("error while converting string to double\n");
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return -5;
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} else {
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return 0;
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}
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break;
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case DB1_DATETIME:
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if (db_time2str(VAL_TIME(_v), _s, _len) < 0) {
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LM_ERR("failed to convert string to time_t\n");
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return -8;
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} else {
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return 0;
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}
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break;
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default:
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return 1;
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}
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}
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