wikimedia /
mediawiki
This project does not seem to handle request data directly as such no vulnerable execution paths were found.
include, or for example
via PHP's auto-loading mechanism.
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| 1 | <?php |
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| 2 | /** |
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| 3 | * |
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| 4 | * |
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| 5 | * Created on Sep 10, 2007 |
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| 6 | * |
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| 7 | * Copyright © 2007 Roan Kattouw "<Firstname>.<Lastname>@gmail.com" |
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| 8 | * |
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| 9 | * This program is free software; you can redistribute it and/or modify |
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| 10 | * it under the terms of the GNU General Public License as published by |
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| 11 | * the Free Software Foundation; either version 2 of the License, or |
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| 12 | * (at your option) any later version. |
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| 13 | * |
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| 14 | * This program is distributed in the hope that it will be useful, |
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| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 17 | * GNU General Public License for more details. |
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| 18 | * |
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| 19 | * You should have received a copy of the GNU General Public License along |
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| 20 | * with this program; if not, write to the Free Software Foundation, Inc., |
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| 21 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
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| 22 | * http://www.gnu.org/copyleft/gpl.html |
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| 23 | * |
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| 24 | * @file |
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| 25 | */ |
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| 26 | |||
| 27 | /** |
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| 28 | * Query module to enumerate all user blocks |
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| 29 | * |
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| 30 | * @ingroup API |
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| 31 | */ |
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| 32 | class ApiQueryBlocks extends ApiQueryBase { |
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| 33 | |||
| 34 | public function __construct( ApiQuery $query, $moduleName ) { |
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| 35 | parent::__construct( $query, $moduleName, 'bk' ); |
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| 36 | } |
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| 37 | |||
| 38 | public function execute() { |
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| 39 | global $wgContLang; |
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| 40 | |||
| 41 | $db = $this->getDB(); |
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| 42 | $params = $this->extractRequestParams(); |
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| 43 | $this->requireMaxOneParameter( $params, 'users', 'ip' ); |
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| 44 | |||
| 45 | $prop = array_flip( $params['prop'] ); |
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| 46 | $fld_id = isset( $prop['id'] ); |
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| 47 | $fld_user = isset( $prop['user'] ); |
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| 48 | $fld_userid = isset( $prop['userid'] ); |
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| 49 | $fld_by = isset( $prop['by'] ); |
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| 50 | $fld_byid = isset( $prop['byid'] ); |
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| 51 | $fld_timestamp = isset( $prop['timestamp'] ); |
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| 52 | $fld_expiry = isset( $prop['expiry'] ); |
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| 53 | $fld_reason = isset( $prop['reason'] ); |
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| 54 | $fld_range = isset( $prop['range'] ); |
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| 55 | $fld_flags = isset( $prop['flags'] ); |
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| 56 | |||
| 57 | $result = $this->getResult(); |
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| 58 | |||
| 59 | $this->addTables( 'ipblocks' ); |
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| 60 | $this->addFields( [ 'ipb_auto', 'ipb_id', 'ipb_timestamp' ] ); |
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| 61 | |||
| 62 | $this->addFieldsIf( [ 'ipb_address', 'ipb_user' ], $fld_user || $fld_userid ); |
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| 63 | $this->addFieldsIf( 'ipb_by_text', $fld_by ); |
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| 64 | $this->addFieldsIf( 'ipb_by', $fld_byid ); |
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| 65 | $this->addFieldsIf( 'ipb_expiry', $fld_expiry ); |
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| 66 | $this->addFieldsIf( 'ipb_reason', $fld_reason ); |
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| 67 | $this->addFieldsIf( [ 'ipb_range_start', 'ipb_range_end' ], $fld_range ); |
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| 68 | $this->addFieldsIf( [ 'ipb_anon_only', 'ipb_create_account', 'ipb_enable_autoblock', |
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| 69 | 'ipb_block_email', 'ipb_deleted', 'ipb_allow_usertalk' ], |
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| 70 | $fld_flags ); |
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| 71 | |||
| 72 | $this->addOption( 'LIMIT', $params['limit'] + 1 ); |
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| 73 | $this->addTimestampWhereRange( |
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| 74 | 'ipb_timestamp', |
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| 75 | $params['dir'], |
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| 76 | $params['start'], |
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| 77 | $params['end'] |
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| 78 | ); |
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| 79 | // Include in ORDER BY for uniqueness |
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| 80 | $this->addWhereRange( 'ipb_id', $params['dir'], null, null ); |
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| 81 | |||
| 82 | if ( !is_null( $params['continue'] ) ) { |
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| 83 | $cont = explode( '|', $params['continue'] ); |
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| 84 | $this->dieContinueUsageIf( count( $cont ) != 2 ); |
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| 85 | $op = ( $params['dir'] == 'newer' ? '>' : '<' ); |
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| 86 | $continueTimestamp = $db->addQuotes( $db->timestamp( $cont[0] ) ); |
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| 87 | $continueId = (int)$cont[1]; |
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| 88 | $this->dieContinueUsageIf( $continueId != $cont[1] ); |
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| 89 | $this->addWhere( "ipb_timestamp $op $continueTimestamp OR " . |
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| 90 | "(ipb_timestamp = $continueTimestamp AND " . |
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| 91 | "ipb_id $op= $continueId)" |
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| 92 | ); |
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| 93 | } |
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| 94 | |||
| 95 | if ( isset( $params['ids'] ) ) { |
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| 96 | $this->addWhereFld( 'ipb_id', $params['ids'] ); |
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| 97 | } |
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| 98 | if ( isset( $params['users'] ) ) { |
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| 99 | $usernames = []; |
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| 100 | foreach ( (array)$params['users'] as $u ) { |
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| 101 | $usernames[] = $this->prepareUsername( $u ); |
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| 102 | } |
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| 103 | $this->addWhereFld( 'ipb_address', $usernames ); |
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| 104 | $this->addWhereFld( 'ipb_auto', 0 ); |
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| 105 | } |
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| 106 | if ( isset( $params['ip'] ) ) { |
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| 107 | $blockCIDRLimit = $this->getConfig()->get( 'BlockCIDRLimit' ); |
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| 108 | if ( IP::isIPv4( $params['ip'] ) ) { |
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| 109 | $type = 'IPv4'; |
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| 110 | $cidrLimit = $blockCIDRLimit['IPv4']; |
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| 111 | $prefixLen = 0; |
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| 112 | } elseif ( IP::isIPv6( $params['ip'] ) ) { |
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| 113 | $type = 'IPv6'; |
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| 114 | $cidrLimit = $blockCIDRLimit['IPv6']; |
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| 115 | $prefixLen = 3; // IP::toHex output is prefixed with "v6-" |
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| 116 | } else { |
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| 117 | $this->dieUsage( 'IP parameter is not valid', 'param_ip' ); |
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| 118 | } |
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| 119 | |||
| 120 | # Check range validity, if it's a CIDR |
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| 121 | list( $ip, $range ) = IP::parseCIDR( $params['ip'] ); |
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| 122 | if ( $ip !== false && $range !== false && $range < $cidrLimit ) { |
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| 123 | $this->dieUsage( |
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| 124 | "$type CIDR ranges broader than /$cidrLimit are not accepted", |
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0 ignored issues
–
show
The variable
$cidrLimit does not seem to be defined for all execution paths leading up to this point.
If you define a variable conditionally, it can happen that it is not defined for all execution paths. Let’s take a look at an example: function myFunction($a) {
switch ($a) {
case 'foo':
$x = 1;
break;
case 'bar':
$x = 2;
break;
}
// $x is potentially undefined here.
echo $x;
}
In the above example, the variable $x is defined if you pass “foo” or “bar” as argument for $a. However, since the switch statement has no default case statement, if you pass any other value, the variable $x would be undefined. Available Fixes
Loading history...
|
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| 125 | 'cidrtoobroad' |
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| 126 | ); |
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| 127 | } |
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| 128 | |||
| 129 | # Let IP::parseRange handle calculating $upper, instead of duplicating the logic here. |
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| 130 | list( $lower, $upper ) = IP::parseRange( $params['ip'] ); |
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| 131 | |||
| 132 | # Extract the common prefix to any rangeblock affecting this IP/CIDR |
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| 133 | $prefix = substr( $lower, 0, $prefixLen + floor( $cidrLimit / 4 ) ); |
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|
0 ignored issues
–
show
The variable
$prefixLen does not seem to be defined for all execution paths leading up to this point.
If you define a variable conditionally, it can happen that it is not defined for all execution paths. Let’s take a look at an example: function myFunction($a) {
switch ($a) {
case 'foo':
$x = 1;
break;
case 'bar':
$x = 2;
break;
}
// $x is potentially undefined here.
echo $x;
}
In the above example, the variable $x is defined if you pass “foo” or “bar” as argument for $a. However, since the switch statement has no default case statement, if you pass any other value, the variable $x would be undefined. Available Fixes
Loading history...
|
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| 134 | |||
| 135 | # Fairly hard to make a malicious SQL statement out of hex characters, |
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| 136 | # but it is good practice to add quotes |
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| 137 | $lower = $db->addQuotes( $lower ); |
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| 138 | $upper = $db->addQuotes( $upper ); |
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| 139 | |||
| 140 | $this->addWhere( [ |
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| 141 | 'ipb_range_start' . $db->buildLike( $prefix, $db->anyString() ), |
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| 142 | 'ipb_range_start <= ' . $lower, |
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| 143 | 'ipb_range_end >= ' . $upper, |
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| 144 | 'ipb_auto' => 0 |
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| 145 | ] ); |
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| 146 | } |
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| 147 | |||
| 148 | if ( !is_null( $params['show'] ) ) { |
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| 149 | $show = array_flip( $params['show'] ); |
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| 150 | |||
| 151 | /* Check for conflicting parameters. */ |
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| 152 | View Code Duplication | if ( ( isset( $show['account'] ) && isset( $show['!account'] ) ) |
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| 153 | || ( isset( $show['ip'] ) && isset( $show['!ip'] ) ) |
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| 154 | || ( isset( $show['range'] ) && isset( $show['!range'] ) ) |
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| 155 | || ( isset( $show['temp'] ) && isset( $show['!temp'] ) ) |
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| 156 | ) { |
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| 157 | $this->dieUsageMsg( 'show' ); |
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| 158 | } |
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| 159 | |||
| 160 | $this->addWhereIf( 'ipb_user = 0', isset( $show['!account'] ) ); |
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| 161 | $this->addWhereIf( 'ipb_user != 0', isset( $show['account'] ) ); |
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| 162 | $this->addWhereIf( 'ipb_user != 0 OR ipb_range_end > ipb_range_start', isset( $show['!ip'] ) ); |
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| 163 | $this->addWhereIf( 'ipb_user = 0 AND ipb_range_end = ipb_range_start', isset( $show['ip'] ) ); |
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| 164 | $this->addWhereIf( 'ipb_expiry = ' . |
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| 165 | $db->addQuotes( $db->getInfinity() ), isset( $show['!temp'] ) ); |
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| 166 | $this->addWhereIf( 'ipb_expiry != ' . |
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| 167 | $db->addQuotes( $db->getInfinity() ), isset( $show['temp'] ) ); |
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| 168 | $this->addWhereIf( 'ipb_range_end = ipb_range_start', isset( $show['!range'] ) ); |
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| 169 | $this->addWhereIf( 'ipb_range_end > ipb_range_start', isset( $show['range'] ) ); |
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| 170 | } |
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| 171 | |||
| 172 | if ( !$this->getUser()->isAllowed( 'hideuser' ) ) { |
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| 173 | $this->addWhereFld( 'ipb_deleted', 0 ); |
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| 174 | } |
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| 175 | |||
| 176 | # Filter out expired rows |
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| 177 | $this->addWhere( 'ipb_expiry > ' . $db->addQuotes( $db->timestamp() ) ); |
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| 178 | |||
| 179 | $res = $this->select( __METHOD__ ); |
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| 180 | |||
| 181 | $count = 0; |
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| 182 | foreach ( $res as $row ) { |
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| 183 | if ( ++$count > $params['limit'] ) { |
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| 184 | // We've had enough |
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| 185 | $this->setContinueEnumParameter( 'continue', "$row->ipb_timestamp|$row->ipb_id" ); |
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| 186 | break; |
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| 187 | } |
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| 188 | $block = [ |
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| 189 | ApiResult::META_TYPE => 'assoc', |
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| 190 | ]; |
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| 191 | if ( $fld_id ) { |
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| 192 | $block['id'] = (int)$row->ipb_id; |
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| 193 | } |
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| 194 | if ( $fld_user && !$row->ipb_auto ) { |
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| 195 | $block['user'] = $row->ipb_address; |
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| 196 | } |
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| 197 | if ( $fld_userid && !$row->ipb_auto ) { |
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| 198 | $block['userid'] = (int)$row->ipb_user; |
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| 199 | } |
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| 200 | if ( $fld_by ) { |
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| 201 | $block['by'] = $row->ipb_by_text; |
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| 202 | } |
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| 203 | if ( $fld_byid ) { |
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| 204 | $block['byid'] = (int)$row->ipb_by; |
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| 205 | } |
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| 206 | if ( $fld_timestamp ) { |
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| 207 | $block['timestamp'] = wfTimestamp( TS_ISO_8601, $row->ipb_timestamp ); |
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| 208 | } |
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| 209 | if ( $fld_expiry ) { |
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| 210 | $block['expiry'] = $wgContLang->formatExpiry( $row->ipb_expiry, TS_ISO_8601 ); |
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| 211 | } |
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| 212 | if ( $fld_reason ) { |
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| 213 | $block['reason'] = $row->ipb_reason; |
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| 214 | } |
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| 215 | if ( $fld_range && !$row->ipb_auto ) { |
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| 216 | $block['rangestart'] = IP::formatHex( $row->ipb_range_start ); |
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| 217 | $block['rangeend'] = IP::formatHex( $row->ipb_range_end ); |
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| 218 | } |
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| 219 | if ( $fld_flags ) { |
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| 220 | // For clarity, these flags use the same names as their action=block counterparts |
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| 221 | $block['automatic'] = (bool)$row->ipb_auto; |
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| 222 | $block['anononly'] = (bool)$row->ipb_anon_only; |
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| 223 | $block['nocreate'] = (bool)$row->ipb_create_account; |
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| 224 | $block['autoblock'] = (bool)$row->ipb_enable_autoblock; |
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| 225 | $block['noemail'] = (bool)$row->ipb_block_email; |
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| 226 | $block['hidden'] = (bool)$row->ipb_deleted; |
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| 227 | $block['allowusertalk'] = (bool)$row->ipb_allow_usertalk; |
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| 228 | } |
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| 229 | $fit = $result->addValue( [ 'query', $this->getModuleName() ], null, $block ); |
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| 230 | if ( !$fit ) { |
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| 231 | $this->setContinueEnumParameter( 'continue', "$row->ipb_timestamp|$row->ipb_id" ); |
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| 232 | break; |
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| 233 | } |
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| 234 | } |
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| 235 | $result->addIndexedTagName( [ 'query', $this->getModuleName() ], 'block' ); |
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| 236 | } |
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| 237 | |||
| 238 | protected function prepareUsername( $user ) { |
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| 239 | if ( !$user ) { |
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| 240 | $this->dieUsage( 'User parameter may not be empty', 'param_user' ); |
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| 241 | } |
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| 242 | $name = User::isIP( $user ) |
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| 243 | ? $user |
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| 244 | : User::getCanonicalName( $user, 'valid' ); |
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| 245 | if ( $name === false ) { |
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| 246 | $this->dieUsage( "User name {$user} is not valid", 'param_user' ); |
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| 247 | } |
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| 248 | return $name; |
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| 249 | } |
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| 250 | |||
| 251 | public function getAllowedParams() { |
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| 252 | $blockCIDRLimit = $this->getConfig()->get( 'BlockCIDRLimit' ); |
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| 253 | |||
| 254 | return [ |
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| 255 | 'start' => [ |
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| 256 | ApiBase::PARAM_TYPE => 'timestamp' |
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| 257 | ], |
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| 258 | 'end' => [ |
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| 259 | ApiBase::PARAM_TYPE => 'timestamp', |
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| 260 | ], |
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| 261 | 'dir' => [ |
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| 262 | ApiBase::PARAM_TYPE => [ |
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| 263 | 'newer', |
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| 264 | 'older' |
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| 265 | ], |
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| 266 | ApiBase::PARAM_DFLT => 'older', |
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| 267 | ApiBase::PARAM_HELP_MSG => 'api-help-param-direction', |
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| 268 | ], |
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| 269 | 'ids' => [ |
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| 270 | ApiBase::PARAM_TYPE => 'integer', |
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| 271 | ApiBase::PARAM_ISMULTI => true |
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| 272 | ], |
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| 273 | 'users' => [ |
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| 274 | ApiBase::PARAM_TYPE => 'user', |
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| 275 | ApiBase::PARAM_ISMULTI => true |
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| 276 | ], |
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| 277 | 'ip' => [ |
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| 278 | ApiBase::PARAM_HELP_MSG => [ |
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| 279 | 'apihelp-query+blocks-param-ip', |
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| 280 | $blockCIDRLimit['IPv4'], |
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| 281 | $blockCIDRLimit['IPv6'], |
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| 282 | ], |
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| 283 | ], |
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| 284 | 'limit' => [ |
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| 285 | ApiBase::PARAM_DFLT => 10, |
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| 286 | ApiBase::PARAM_TYPE => 'limit', |
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| 287 | ApiBase::PARAM_MIN => 1, |
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| 288 | ApiBase::PARAM_MAX => ApiBase::LIMIT_BIG1, |
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| 289 | ApiBase::PARAM_MAX2 => ApiBase::LIMIT_BIG2 |
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| 290 | ], |
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| 291 | 'prop' => [ |
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| 292 | ApiBase::PARAM_DFLT => 'id|user|by|timestamp|expiry|reason|flags', |
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| 293 | ApiBase::PARAM_TYPE => [ |
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| 294 | 'id', |
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| 295 | 'user', |
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| 296 | 'userid', |
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| 297 | 'by', |
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| 298 | 'byid', |
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| 299 | 'timestamp', |
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| 300 | 'expiry', |
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| 301 | 'reason', |
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| 302 | 'range', |
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| 303 | 'flags' |
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| 304 | ], |
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| 305 | ApiBase::PARAM_ISMULTI => true, |
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| 306 | ApiBase::PARAM_HELP_MSG_PER_VALUE => [], |
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| 307 | ], |
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| 308 | 'show' => [ |
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| 309 | ApiBase::PARAM_TYPE => [ |
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| 310 | 'account', |
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| 311 | '!account', |
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| 312 | 'temp', |
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| 313 | '!temp', |
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| 314 | 'ip', |
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| 315 | '!ip', |
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| 316 | 'range', |
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| 317 | '!range', |
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| 318 | ], |
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| 319 | ApiBase::PARAM_ISMULTI => true |
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| 320 | ], |
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| 321 | 'continue' => [ |
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| 322 | ApiBase::PARAM_HELP_MSG => 'api-help-param-continue', |
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| 323 | ], |
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| 324 | ]; |
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| 325 | } |
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| 326 | |||
| 327 | protected function getExamplesMessages() { |
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| 328 | return [ |
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| 329 | 'action=query&list=blocks' |
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| 330 | => 'apihelp-query+blocks-example-simple', |
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| 331 | 'action=query&list=blocks&bkusers=Alice|Bob' |
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| 332 | => 'apihelp-query+blocks-example-users', |
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| 333 | ]; |
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| 334 | } |
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| 335 | |||
| 336 | public function getHelpUrls() { |
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| 337 | return 'https://www.mediawiki.org/wiki/API:Blocks'; |
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| 338 | } |
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| 339 | } |
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| 340 |
If you define a variable conditionally, it can happen that it is not defined for all execution paths.
Let’s take a look at an example:
In the above example, the variable $x is defined if you pass “foo” or “bar” as argument for $a. However, since the switch statement has no default case statement, if you pass any other value, the variable $x would be undefined.
Available Fixes
Check for existence of the variable explicitly:
Define a default value for the variable:
Add a value for the missing path: