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/* cvm/cvm-mysql.c - MySQL CVM
* Copyright (C) 2010 Bruce Guenter <bruce@untroubled.org>
*
* 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; either version 2 of the License, or
* (at your option) any later version.
*
* 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
*/
#include <mysql/errmsg.h>
#include <mysql/mysql.h>
#include <stdlib.h>
#include <unistd.h>
#include <bglibs/str.h>
#include "module.h"
#include "sql.h"
const char program[] = "cvm-mysql";
const char sql_query_var[] = "CVM_MYSQL_QUERY";
const char sql_pwcmp_var[] = "CVM_MYSQL_PWCMP";
const char sql_postq_var[] = "CVM_MYSQL_POSTQ";
static MYSQL mysql;
static const char* host;
static const char* user;
static const char* pass;
static const char* db;
static unsigned port;
static const char* unix_socket;
static int do_connect(void)
{
if (!mysql_real_connect(&mysql, host, user, pass, db,
port, unix_socket, 0)) return CVME_IO;
return 0;
}
int sql_auth_init(void)
{
const char* tmp;
host = getenv("CVM_MYSQL_HOST");
user = getenv("CVM_MYSQL_USER");
pass = getenv("CVM_MYSQL_PASS");
db = getenv("CVM_MYSQL_DB");
tmp = getenv("CVM_MYSQL_PORT");
port = tmp ? atoi(tmp) : 0;
unix_socket = getenv("CVM_MYSQL_SOCKET");
mysql_init(&mysql);
if ((tmp = getenv("CVM_MYSQL_DEFAULT_FILE")) != 0)
if (mysql_options(&mysql, MYSQL_READ_DEFAULT_FILE, tmp))
return CVME_CONFIG;
if ((tmp = getenv("CVM_MYSQL_DEFAULT_GROUP")) != 0)
if (mysql_options(&mysql, MYSQL_READ_DEFAULT_GROUP, tmp))
return CVME_CONFIG;
return do_connect();
}
int sql_post_query(const str* query)
{
int i;
if (mysql_real_query(&mysql, query->s, query->len) == 0) return 0;
if (mysql_errno(&mysql) != CR_SERVER_LOST) return CVME_IO | CVME_FATAL;
mysql_close(&mysql);
if ((i = do_connect()) != 0) return i;
if (mysql_real_query(&mysql, query->s, query->len) == 0) return 0;
return CVME_IO | CVME_FATAL;
}
static MYSQL_ROW row;
int sql_auth_query(const str* query)
{
int i;
static MYSQL_RES* result = 0;
if ((i = sql_post_query(query)) != 0) return -i;
if (result != 0) mysql_free_result(result);
result = mysql_store_result(&mysql);
row = mysql_fetch_row(result);
return mysql_num_rows(result);
}
const char* sql_get_field(int field)
{
return row[field];
}
void sql_auth_stop(void)
{
mysql_close(&mysql);
}
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