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#include <stdlib.h>
#include <stdio.h>
#include "db.h"
#include "log.h"
#include "common.h"
#ifdef HAVE_MYSQL
MYSQL mysql;
#endif
#ifdef HAVE_PGSQL
PGconn *conn;
#endif
void DBclose(void)
{
#ifdef HAVE_MYSQL
mysql_close(&mysql);
#endif
#ifdef HAVE_PGSQL
PQfinish(conn);
#endif
}
/*
* Connect to database.
* If fails, program terminates.
*/
void DBconnect( char *dbname, char *dbuser, char *dbpassword, char *dbsocket)
{
/* zabbix_log(LOG_LEVEL_ERR, "[%s] [%s] [%s]\n",dbname, dbuser, dbpassword ); */
#ifdef HAVE_MYSQL
/* For MySQL >3.22.00 */
/* if( ! mysql_connect( &mysql, NULL, dbuser, dbpassword ) )*/
if( ! mysql_real_connect( &mysql, NULL, dbuser, dbpassword, dbname, 3306, dbsocket,0 ) )
{
zabbix_log(LOG_LEVEL_ERR, "Failed to connect to database: Error: %s\n",mysql_error(&mysql) );
exit( FAIL );
}
if( mysql_select_db( &mysql, dbname ) != 0 )
{
zabbix_log(LOG_LEVEL_ERR, "Failed to select database: Error: %s\n",mysql_error(&mysql) );
exit( FAIL );
}
#endif
#ifdef HAVE_PGSQL
/* conn = PQsetdb(pghost, pgport, pgoptions, pgtty, dbName); */
/* conn = PQsetdb(NULL, NULL, NULL, NULL, dbname);*/
conn = PQsetdbLogin(NULL, NULL, NULL, NULL, dbname, dbuser, dbpassword );
/* check to see that the backend connection was successfully made */
if (PQstatus(conn) == CONNECTION_BAD)
{
zabbix_log(LOG_LEVEL_ERR, "Connection to database '%s' failed.\n", dbname);
zabbix_log(LOG_LEVEL_ERR, "%s", PQerrorMessage(conn));
exit(FAIL);
}
#endif
}
/*
* Execute SQL statement. For non-select statements only.
* If fails, program terminates.
*/
int DBexecute(char *query)
{
#ifdef HAVE_MYSQL
zabbix_log( LOG_LEVEL_DEBUG, "Executing query:%s\n",query);
/* zabbix_log( LOG_LEVEL_WARNING, "Executing query:%s\n",query)*/;
if( mysql_query(&mysql,query) != 0 )
{
zabbix_log( LOG_LEVEL_ERR, "Query::%s",query);
zabbix_log(LOG_LEVEL_ERR, "Query failed:%s", mysql_error(&mysql) );
return FAIL;
}
#endif
#ifdef HAVE_PGSQL
PGresult *result;
zabbix_log( LOG_LEVEL_DEBUG, "Executing query:%s\n",query);
result = PQexec(conn,query);
if( result==NULL)
{
zabbix_log( LOG_LEVEL_ERR, "Query::%s",query);
zabbix_log(LOG_LEVEL_ERR, "Query failed:%s", "Result is NULL" );
PQclear(result);
return FAIL;
}
if( PQresultStatus(result) != PGRES_COMMAND_OK)
{
zabbix_log( LOG_LEVEL_ERR, "Query::%s",query);
zabbix_log(LOG_LEVEL_ERR, "Query failed:%s", PQresStatus(PQresultStatus(result)) );
PQclear(result);
return FAIL;
}
PQclear(result);
#endif
return SUCCEED;
}
/*
* Execute SQL statement. For select statements only.
* If fails, program terminates.
*/
DB_RESULT *DBselect(char *query)
{
#ifdef HAVE_MYSQL
zabbix_log( LOG_LEVEL_DEBUG, "Executing query:%s\n",query);
/* zabbix_log( LOG_LEVEL_WARNING, "Executing query:%s\n",query);*/
if( mysql_query(&mysql,query) != 0 )
{
zabbix_log( LOG_LEVEL_ERR, "Query::%s",query);
zabbix_log(LOG_LEVEL_ERR, "Query failed:%s", mysql_error(&mysql) );
exit( FAIL );
}
return mysql_store_result(&mysql);
#endif
#ifdef HAVE_PGSQL
PGresult *result;
zabbix_log( LOG_LEVEL_DEBUG, "Executing query:%s\n",query);
result = PQexec(conn,query);
if( result==NULL)
{
zabbix_log( LOG_LEVEL_ERR, "Query::%s",query);
zabbix_log(LOG_LEVEL_ERR, "Query failed:%s", "Result is NULL" );
exit( FAIL );
}
if( PQresultStatus(result) != PGRES_TUPLES_OK)
{
zabbix_log( LOG_LEVEL_ERR, "Query::%s",query);
zabbix_log(LOG_LEVEL_ERR, "Query failed:%s", PQresStatus(PQresultStatus(result)) );
exit( FAIL );
}
return result;
#endif
}
/*
* Get value for given row and field. Must be called after DBselect.
*/
char *DBget_field(DB_RESULT *result, int rownum, int fieldnum)
{
#ifdef HAVE_MYSQL
MYSQL_ROW row;
mysql_data_seek(result, rownum);
row=mysql_fetch_row(result);
zabbix_log(LOG_LEVEL_DEBUG, "Got field:%s", row[fieldnum] );
return row[fieldnum];
#endif
#ifdef HAVE_PGSQL
return PQgetvalue(result, rownum, fieldnum);
#endif
}
/*
* Get number of selected records.
*/
int DBnum_rows(DB_RESULT *result)
{
#ifdef HAVE_MYSQL
return mysql_num_rows(result);
#endif
#ifdef HAVE_PGSQL
return PQntuples(result);
#endif
}
/*
* Get function value.
*/
int DBget_function_result(float *Result,char *FunctionID)
{
DB_RESULT *result;
char c[MAX_STRING_LEN+1];
int rows;
sprintf( c, "select lastvalue from functions where functionid=%s", FunctionID );
result = DBselect(c);
if(result == NULL)
{
DBfree_result(result);
zabbix_log(LOG_LEVEL_WARNING, "Query failed for functionid:[%s]", FunctionID );
return FAIL;
}
rows = DBnum_rows(result);
if(rows == 0)
{
DBfree_result(result);
zabbix_log(LOG_LEVEL_WARNING, "Query failed for functionid:[%s]", FunctionID );
return FAIL;
}
*Result=atof(DBget_field(result,0,0));
DBfree_result(result);
return SUCCEED;
}
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