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
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
|
--TEST--
Persistent connections and mysqli.max_links
--EXTENSIONS--
mysqli
--SKIPIF--
<?php
require_once 'skipifconnectfailure.inc';
require_once 'table.inc';
mysqli_query($link, 'DROP USER pcontest');
mysqli_query($link, 'DROP USER pcontest@localhost');
if (!mysqli_query($link, 'CREATE USER pcontest@"%" IDENTIFIED BY "pcontest"') ||
!mysqli_query($link, 'CREATE USER pcontest@localhost IDENTIFIED BY "pcontest"')) {
printf("skip Cannot create second DB user [%d] %s", mysqli_errno($link), mysqli_error($link));
mysqli_close($link);
die("skip CREATE USER failed");
}
// we might be able to specify the host using CURRENT_USER(), but...
if (!mysqli_query($link, sprintf("GRANT SELECT ON TABLE %s.test TO pcontest@'%%'", $db)) ||
!mysqli_query($link, sprintf("GRANT SELECT ON TABLE %s.test TO pcontest@'localhost'", $db))) {
printf("skip Cannot GRANT SELECT to second DB user [%d] %s", mysqli_errno($link), mysqli_error($link));
mysqli_query($link, 'REVOKE ALL PRIVILEGES, GRANT OPTION FROM pcontest');
mysqli_query($link, 'REVOKE ALL PRIVILEGES, GRANT OPTION FROM pcontest@localhost');
mysqli_query($link, 'DROP USER pcontest@localhost');
mysqli_query($link, 'DROP USER pcontest');
mysqli_close($link);
die("skip GRANT failed");
}
if (!@my_mysqli_connect($host, 'pcontest', 'pcontest', $db, $port, $socket)) {
mysqli_query($link, 'REVOKE ALL PRIVILEGES, GRANT OPTION FROM pcontest');
mysqli_query($link, 'REVOKE ALL PRIVILEGES, GRANT OPTION FROM pcontest@localhost');
mysqli_query($link, 'DROP USER pcontest@localhost');
mysqli_query($link, 'DROP USER pcontest');
mysqli_close($link);
die("skip CONNECT using new user failed");
}
mysqli_close($link);
?>
--INI--
mysqli.allow_persistent=1
mysqli.max_persistent=2
mysqli.rollback_on_cached_plink=1
--FILE--
<?php
require_once 'connect.inc';
require_once 'table.inc';
if (!mysqli_query($link, 'DROP USER pcontest') ||
!mysqli_query($link, 'DROP USER pcontest@localhost') ||
!mysqli_query($link, 'CREATE USER pcontest@"%" IDENTIFIED BY "pcontest"') ||
!mysqli_query($link, 'CREATE USER pcontest@localhost IDENTIFIED BY "pcontest"') ||
!mysqli_query($link, sprintf("GRANT SELECT ON TABLE %s.test TO pcontest@'%%'", $db)) ||
!mysqli_query($link, sprintf("GRANT SELECT ON TABLE %s.test TO pcontest@'localhost'", $db))) {
printf("[000] Init failed, [%d] %s\n",
mysqli_errno($link), mysqli_error($link));
}
try {
mysqli_get_links_stats(1);
} catch (ArgumentCountError $exception) {
echo $exception->getMessage() . "\n";
}
echo "Before pconnect:";
var_dump(mysqli_get_links_stats());
if (!$plink = my_mysqli_connect('p:' . $host, 'pcontest', 'pcontest', $db, $port, $socket))
printf("[001] Cannot connect using the second DB user created during SKIPIF, [%d] %s\n",
mysqli_connect_errno(), mysqli_connect_error());
echo "After pconnect:";
var_dump(mysqli_get_links_stats());
ob_start();
phpinfo();
$phpinfo = strip_tags(ob_get_contents());
ob_end_clean();
$phpinfo = substr($phpinfo, strpos($phpinfo, 'MysqlI Support => enabled'), 500);
if (!preg_match('@Active Persistent Links\s+=>\s+(\d+)@ismU', $phpinfo, $matches))
printf("[002] Cannot get # active persistent links from phpinfo()\n");
$num_plinks = $matches[1];
if (!$res = mysqli_query($plink, 'SELECT id, label FROM test WHERE id = 1'))
printf("[003] Cannot run query on persistent connection of second DB user, [%d] %s\n",
mysqli_errno($plink), mysqli_error($plink));
if (!$row = mysqli_fetch_assoc($res))
printf("[004] Cannot run fetch result, [%d] %s\n",
mysqli_errno($plink), mysqli_error($plink));
mysqli_free_result($res);
var_dump($row);
// change the password for the second DB user and kill the persistent connection
if ((!mysqli_query($link, 'SET PASSWORD FOR pcontest = "newpass"') &&
!mysqli_query($link, 'SET PASSWORD FOR pcontest = PASSWORD("newpass")'))||
!mysqli_query($link, 'FLUSH PRIVILEGES'))
printf("[005] Cannot change PW of second DB user, [%d] %s\n", mysqli_errno($link), mysqli_error($link));
// change the password for the second DB user and kill the persistent connection
if ((!mysqli_query($link, 'SET PASSWORD FOR pcontest@localhost = "newpass"') &&
!mysqli_query($link, 'SET PASSWORD FOR pcontest@localhost = PASSWORD("newpass")')) ||
!mysqli_query($link, 'FLUSH PRIVILEGES'))
printf("[006] Cannot change PW of second DB user, [%d] %s\n", mysqli_errno($link), mysqli_error($link));
// persistent connections cannot be closed but only be killed
$pthread_id = mysqli_thread_id($plink);
if (!mysqli_query($link, sprintf('KILL %d', $pthread_id)))
printf("[007] Cannot KILL persistent connection of second DB user, [%d] %s\n", mysqli_errno($link), mysqli_error($link));
// give the server a second to really kill the thread
sleep(1);
if (!$res = mysqli_query($link, "SHOW FULL PROCESSLIST"))
printf("[008] [%d] %s\n", mysqli_errno($link), mysqli_error($link));
$running_threads = array();
while ($row = mysqli_fetch_assoc($res))
$running_threads[$row['Id']] = $row;
mysqli_free_result($res);
if (isset($running_threads[$pthread_id]))
printf("[009] Persistent connection has not been killed\n");
echo "Before second pconnect:";
var_dump(mysqli_get_links_stats());
// this fails and we have 0 (<= $num_plinks) connections
// Do not remove the variable assignment as it is important that we have 2 active connections
if ($plink = @my_mysqli_connect('p:' . $host, 'pcontest', 'pcontest', $db, $port, $socket))
printf("[010] Can connect using the old password, [%d] %s\n",
mysqli_connect_errno(), mysqli_connect_error());
echo "After second pconnect:";
var_dump(mysqli_get_links_stats());
ob_start();
phpinfo();
$phpinfo = strip_tags(ob_get_contents());
ob_end_clean();
$phpinfo = substr($phpinfo, stripos($phpinfo, 'MysqlI Support => enabled'), 500);
if (!preg_match('@Active Persistent Links\s+=>\s+(\d+)@ismU', $phpinfo, $matches))
printf("[010] Cannot get # of active persistent links from phpinfo()\n");
var_dump(mysqli_get_links_stats());
$num_plinks_kill = $matches[1];
$sstats = mysqli_get_links_stats();
if ($sstats['active_plinks'] != $num_plinks_kill) {
printf("[010.2] Num of active plinks differ %s %s\n", $sstats['active_plinks'], $num_plinks_kill);
}
if ($num_plinks_kill > $num_plinks)
printf("[011] Expecting Active Persistent Links < %d, got %d\n", $num_plinks, $num_plinks_kill);
if (!$plink = my_mysqli_connect('p:' . $host, 'pcontest', 'newpass', $db, $port, $socket))
printf("[012] Cannot connect using the new password, [%d] %s\n",
mysqli_connect_errno(), mysqli_connect_error());
if (!$res = mysqli_query($plink, 'SELECT id, label FROM test WHERE id = 1'))
printf("[013] Cannot run query on persistent connection of second DB user, [%d] %s\n",
mysqli_errno($plink), mysqli_error($plink));
if (!$row = mysqli_fetch_assoc($res))
printf("[014] Cannot run fetch result, [%d] %s\n",
mysqli_errno($plink), mysqli_error($plink));
mysqli_free_result($res);
var_dump($row);
// Do not remove the variable assignment as it is important that we have 2 active connections
if ($plink2 = my_mysqli_connect('p:' . $host, 'pcontest', 'newpass', $db, $port, $socket)) {
printf("[015] Can open more persistent connections than allowed, [%d] %s\n",
mysqli_connect_errno(), mysqli_connect_error());
var_dump(mysqli_get_links_stats());
}
ob_start();
phpinfo();
$phpinfo = strip_tags(ob_get_contents());
ob_end_clean();
$phpinfo = substr($phpinfo, stripos($phpinfo, 'MysqlI Support => enabled'), 500);
if (!preg_match('@Active Persistent Links\s+=>\s+(\d+)@ismU', $phpinfo, $matches))
printf("[016] Cannot get # of active persistent links from phpinfo()\n");
$num_plinks = $matches[1];
if ($num_plinks > (int)ini_get('mysqli.max_persistent'))
printf("[017] mysqli.max_persistent=%d allows %d open connections!\n", ini_get('mysqli.max_persistent'),$num_plinks);
mysqli_query($link, 'REVOKE ALL PRIVILEGES, GRANT OPTION FROM pcontest');
mysqli_query($link, 'DROP USER pcontest');
mysqli_close($link);
print "done!";
?>
--CLEAN--
<?php
require_once 'connect.inc';
if (!$link = my_mysqli_connect($host, $user, $passwd, $db, $port, $socket))
printf("[c001] [%d] %s\n", mysqli_connect_errno(), mysqli_connect_error());
if (!mysqli_query($link, "DROP TABLE IF EXISTS test"))
printf("[c002] Cannot drop table, [%d] %s\n", mysqli_errno($link), mysqli_error($link));
mysqli_query($link, 'REVOKE ALL PRIVILEGES, GRANT OPTION FROM pcontest');
mysqli_query($link, 'REVOKE ALL PRIVILEGES, GRANT OPTION FROM pcontest@localhost');
mysqli_query($link, 'DROP USER pcontest@localhost');
mysqli_query($link, 'DROP USER pcontest');
mysqli_close($link);
?>
--EXPECT--
mysqli_get_links_stats() expects exactly 0 arguments, 1 given
Before pconnect:array(3) {
["total"]=>
int(1)
["active_plinks"]=>
int(0)
["cached_plinks"]=>
int(0)
}
After pconnect:array(3) {
["total"]=>
int(2)
["active_plinks"]=>
int(1)
["cached_plinks"]=>
int(0)
}
array(2) {
["id"]=>
string(1) "1"
["label"]=>
string(1) "a"
}
Before second pconnect:array(3) {
["total"]=>
int(2)
["active_plinks"]=>
int(1)
["cached_plinks"]=>
int(0)
}
After second pconnect:array(3) {
["total"]=>
int(1)
["active_plinks"]=>
int(0)
["cached_plinks"]=>
int(0)
}
array(3) {
["total"]=>
int(1)
["active_plinks"]=>
int(0)
["cached_plinks"]=>
int(0)
}
array(2) {
["id"]=>
string(1) "1"
["label"]=>
string(1) "a"
}
[015] Can open more persistent connections than allowed, [0]
array(3) {
["total"]=>
int(3)
["active_plinks"]=>
int(2)
["cached_plinks"]=>
int(0)
}
done!
|
