1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
|
/* $Id: plugin_mysql.c,v 1.4 2005/01/18 06:30:23 reinelt Exp $
*
* plugin for execute SQL queries into a MySQL DBSM.
*
* Copyright (C) 2004 Javier Garcia <javi@gsmlandia.com>
* Copyright (C) 2004 The LCD4Linux Team <lcd4linux-devel@users.sourceforge.net>
*
* This file is part of LCD4Linux.
*
* LCD4Linux 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, or (at your option)
* any later version.
*
* LCD4Linux 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*
* $Log: plugin_mysql.c,v $
* Revision 1.4 2005/01/18 06:30:23 reinelt
* added (C) to all copyright statements
*
* Revision 1.3 2004/03/21 22:05:53 reinelt
* MySQL plugin fixes from Javi
*
* Revision 1.2 2004/03/20 23:09:01 reinelt
* MySQL plugin fixes from Javi
*
* Revision 1.1 2004/03/10 07:16:15 reinelt
* MySQL plugin from Javier added
*
*/
/* DOC:
* To compile the plugin remember to add -lmysqlclient option into Makefile. I.E: CC = gcc -lmysqlclient
* or run:
* $ gcc -I/usr/include/mysql -L/usr/lib/mysql plugin_mysql.c -lmysqlclient -o plugin_mysql.o
*
* exported functions:
*
* int plugin_init_mysql (void)
*
* adds various functions:
* MySQLquery(query)
* Returns the number of rows in query.
* MySQLstatus()
* Returns the current server status:
* Uptime in seconds and the number of running threads,
* questions, reloads, and open tables.
*
*/
#include "config.h"
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include "debug.h"
#include "plugin.h"
#include "cfg.h"
#ifdef HAVE_MYSQL_MYSQL_H
#include <mysql/mysql.h>
#else
#warning mysql/mysql.h not found: plugin deactivated
#endif
#ifdef WITH_DMALLOC
#include <dmalloc.h>
#endif
#ifdef HAVE_MYSQL_MYSQL_H
static MYSQL conex;
static char Section[] = "Plugin:MySQL";
static void my_MySQLquery (RESULT *result, RESULT *query)
{
double value;
MYSQL_RES *res;
char *q=R2S(query);
/* mysql_ping(MYSQL *mysql) checks whether the connection to the server is working.
If it has gone down, an automatic reconnection is attempted. */
mysql_ping(&conex);
if (mysql_real_query(&conex,q,(unsigned int) strlen(q)))
{
error( "[MySQL] query error: %s",mysql_error(&conex));
value=-1;
}
else
{
/* We don't use res=mysql_use_result(); because mysql_num_rows() will not
return the correct value until all the rows in the result set have been retrieved
with mysql_fetch_row(), so we use res=mysql_store_result(); instead */
res=mysql_store_result(&conex);
value = (double) mysql_num_rows(res);
mysql_free_result(res);
}
SetResult(&result, R_NUMBER, &value);
}
static void my_MySQLstatus (RESULT *result)
{
char *value;
char *status;
mysql_ping(&conex);
status=strdup(mysql_stat(&conex));
if (!status)
{
error( "[MySQL] status error: %s",mysql_error(&conex));
value="error";
}
else value = status;
SetResult(&result, R_STRING, value);
}
#endif
int plugin_init_mysql (void)
{
#ifdef HAVE_MYSQL_MYSQL_H
char server[256];
unsigned int port;
char user[128];
char password[256];
char database[256];
char *s = cfg_get (Section, "server", "localhost");
if (*s=='\0') {
info ("[MySQL] empty '%s.server' entry from %s, assuming 'localhost'", Section, cfg_source());
strcpy(server,"localhost");
}
else strcpy(server,s);
free(s);
if (cfg_number(Section, "port", 0, 1, 65536, &port)<1) {
/* using 0 as default port because mysql_real_connect() will convert it to real default one */
info ("[MySQL] no '%s.port' entry from %s using MySQL's default", Section, cfg_source());
}
s = cfg_get (Section, "user", "");
if (*s=='\0') {
/* If user is NULL or the empty string "", the lcd4linux Unix user is assumed. */
info ("[MySQL] empty '%s.user' entry from %s, assuming lcd4linux owner", Section, cfg_source());
strcpy(user,"");
}
else strcpy(user,s);
free(s);
s = cfg_get (Section, "password","");
/*Do not encrypt the password because encryption is handled automatically
by the MySQL client API.*/
if (*s=='\0') {
info ("[MySQL] empty '%s.password' entry in %s, assuming none", Section, cfg_source());
strcpy(password,"");
}
else strcpy(password,s);
free(s);
s = cfg_get (Section, "database","\0");
if (*s=='\0') {
error ("[MySQL] no '%s:database' entry from %s, specify one", Section, cfg_source());
}
else {
strcpy(database,s);
free(s);
mysql_init(&conex);
if (!mysql_real_connect(&conex,server,user,password,database,port,NULL,0))
error( "[MySQL] conection error: %s",mysql_error(&conex));
else
{
AddFunction ("MySQL::query", 1, my_MySQLquery);
AddFunction ("MySQL::status", 0, my_MySQLstatus);
}
}
#endif
return 0;
}
void plugin_exit_mysql(void)
{
#ifdef HAVE_MYSQL_MYSQL_H
mysql_close(&conex);
#endif
}
|
