Anomie has uploaded a new change for review.

  https://gerrit.wikimedia.org/r/246255

Change subject: Initial checkin
......................................................................

Initial checkin

Change-Id: I9c083d47bb5c1a9e06223634f816a4ffb89036b9
---
A .editorconfig
A .gitattributes
A .gitignore
A .gitreview
A .travis.yml
A COPYING
A Doxyfile
A composer.json
A phpcs.xml
A phpunit.xml.dist
A src/Wikimedia/PhpSessionSerializer.php
A tests/Wikimedia/.PhpSessionSerializerTest.php.swp
A tests/Wikimedia/PhpSessionSerializerTest.php
13 files changed, 1,517 insertions(+), 0 deletions(-)


  git pull ssh://gerrit.wikimedia.org:29418/php-session-serializer 
refs/changes/55/246255/1

diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 0000000..42aefb6
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,6 @@
+# http://editorconfig.org
+root = true
+
+[*]
+indent_style = tab
+
diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..b6fe658
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,10 @@
+.editorconfig export-ignore
+.gitattributes export-ignore
+.gitignore export-ignore
+.gitreview export-ignore
+.travis.yml export-ignore
+Doxyfile export-ignore
+composer.json export-ignore
+phpcs.xml export-ignore
+phpunit.xml.dist export-ignore
+tests/ export-ignore
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..c760786
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,4 @@
+/coverage
+/doc
+/vendor
+/composer.lock
diff --git a/.gitreview b/.gitreview
new file mode 100644
index 0000000..507dea8
--- /dev/null
+++ b/.gitreview
@@ -0,0 +1,6 @@
+[gerrit]
+host=gerrit.wikimedia.org
+port=29418
+project=php-session-serializer.git
+defaultbranch=master
+defaultrebase=0
diff --git a/.travis.yml b/.travis.yml
new file mode 100644
index 0000000..c25a516
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,13 @@
+sudo: false
+language: php
+php:
+  - "5.3.3"
+  - "5.3"
+  - "5.4"
+  - "5.5"
+  - "5.6"
+  - "hhvm"
+install:
+  - composer install
+script:
+  - composer test
diff --git a/COPYING b/COPYING
new file mode 100644
index 0000000..d159169
--- /dev/null
+++ b/COPYING
@@ -0,0 +1,339 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The licenses for most software are designed to take away your
+freedom to share and change it.  By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users.  This
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+Foundation's software and to any other program whose authors commit to
+using it.  (Some other Free Software Foundation software is covered by
+the GNU Lesser General Public License instead.)  You can apply it to
+your programs, too.
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+  When we speak of free software, we are referring to freedom, not
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+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
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+                     END OF TERMS AND CONDITIONS
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+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
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+    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.
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+    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.
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+    You should have received a copy of the GNU General Public License along
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+The hypothetical commands `show w' and `show c' should show the appropriate
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+  `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+  <signature of Ty Coon>, 1 April 1989
+  Ty Coon, President of Vice
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+This General Public License does not permit incorporating your program into
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diff --git a/Doxyfile b/Doxyfile
new file mode 100644
index 0000000..df428b0
--- /dev/null
+++ b/Doxyfile
@@ -0,0 +1,26 @@
+# Doxyfile for php-session-serializer
+#
+# See <http://www.stack.nl/~dimitri/doxygen/manual/config.html>
+# for help on how to use this file to configure Doxygen.
+
+PROJECT_NAME           = "php-session-serializer"
+PROJECT_BRIEF          = "Provides methods like PHP's session_encode and 
session_decode that don't mess with $_SESSION"
+OUTPUT_DIRECTORY       = doc
+JAVADOC_AUTOBRIEF      = YES
+QT_AUTOBRIEF           = YES
+WARN_NO_PARAMDOC       = YES
+INPUT                  = README.md src/
+FILE_PATTERNS          = *.php
+RECURSIVE              = YES
+USE_MDFILE_AS_MAINPAGE = README.md
+HTML_DYNAMIC_SECTIONS  = YES
+GENERATE_TREEVIEW      = YES
+TREEVIEW_WIDTH         = 250
+GENERATE_LATEX         = NO
+HAVE_DOT               = YES
+DOT_FONTNAME           = Helvetica
+DOT_FONTSIZE           = 10
+TEMPLATE_RELATIONS     = YES
+CALL_GRAPH             = NO
+CALLER_GRAPH           = NO
+DOT_MULTI_TARGETS      = YES
diff --git a/composer.json b/composer.json
new file mode 100644
index 0000000..64d4eb3
--- /dev/null
+++ b/composer.json
@@ -0,0 +1,32 @@
+{
+       "name": "mediawiki/php-session-serializer",
+       "description": "Provides methods like PHP's session_encode and 
session_decode that don't mess with $_SESSION",
+       "license": "GPL-2.0+",
+       "homepage": "https://www.mediawiki.org/wiki/Php-session-serializer";,
+       "authors": [
+               {
+                       "name": "Brad Jorsch",
+                       "email": "[email protected]"
+               }
+       ],
+       "autoload": {
+               "classmap": ["src/"]
+       },
+       "require": {
+               "php": ">=5.3.3",
+               "mediawiki/at-ease": "^1.0",
+               "psr/log": "1.0.0"
+       },
+       "require-dev": {
+               "jakub-onderka/php-parallel-lint": "^0.9.0.0",
+               "phpunit/phpunit": "^5.0.5.0",
+               "mediawiki/mediawiki-codesniffer": "^0.4.0.0"
+       },
+       "scripts": {
+               "test": [
+                       "parallel-lint . --exclude vendor",
+                       "phpunit $PHPUNIT_ARGS",
+                       "phpcs -p"
+               ]
+       }
+}
diff --git a/phpcs.xml b/phpcs.xml
new file mode 100644
index 0000000..06c43bc
--- /dev/null
+++ b/phpcs.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0"?>
+<ruleset>
+       <rule ref="vendor/mediawiki/mediawiki-codesniffer/MediaWiki"/>
+       <file>.</file>
+       <arg name="encoding" value="UTF-8"/>
+       <arg name="extensions" value="php"/>
+       <exclude-pattern>coverage</exclude-pattern>
+       <exclude-pattern>vendor</exclude-pattern>
+       <exclude-pattern>doc/html</exclude-pattern>
+</ruleset>
diff --git a/phpunit.xml.dist b/phpunit.xml.dist
new file mode 100644
index 0000000..f0f5428
--- /dev/null
+++ b/phpunit.xml.dist
@@ -0,0 +1,14 @@
+<phpunit colors="true"
+       beStrictAboutTestsThatDoNotTestAnything="true"
+       beStrictAboutOutputDuringTests="true">
+       <testsuites>
+               <testsuite name="php-session-serializer Tests">
+                       <directory>./tests</directory>
+               </testsuite>
+       </testsuites>
+       <filter>
+               <whitelist addUncoveredFilesFromWhitelist="true">
+                       <directory suffix=".php">./src</directory>
+               </whitelist>
+       </filter>
+</phpunit>
diff --git a/src/Wikimedia/PhpSessionSerializer.php 
b/src/Wikimedia/PhpSessionSerializer.php
new file mode 100644
index 0000000..041b7a4
--- /dev/null
+++ b/src/Wikimedia/PhpSessionSerializer.php
@@ -0,0 +1,385 @@
+<?php
+/**
+ * Wikimedia\PhpSessionSerializer
+ *
+ * Copyright (C) 2015 Brad Jorsch <[email protected]>
+ *
+ * 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.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @file
+ * @author Brad Jorsch <[email protected]>
+ */
+
+namespace Wikimedia;
+
+use Psr\Log\LoggerInterface;
+
+/**
+ * Provides for encoding and decoding session arrays to PHP's serialization
+ * formats.
+ *
+ * Supported formats are:
+ * - php
+ * - php_binary
+ * - php_serialize
+ *
+ * WDDX is not supported, since it breaks on all sorts of things.
+ */
+class PhpSessionSerializer {
+       /** @var LoggerInterface */
+       protected static $logger;
+
+       /**
+        * Set the logger to which to log
+        */
+       public static function setLogger( LoggerInterface $logger ) {
+               self::$logger = $logger;
+       }
+
+       /**
+        * Try to set session.serialize_handler to a supported format
+        *
+        * This may change the format even if the current format is also 
supported.
+        *
+        * @return string Format set
+        */
+       public static function setSerializeHandler() {
+               $formats = array(
+                       'php_serialize',
+                       'php',
+                       'php_binary',
+               );
+
+               // First, try php_serialize since that's the only one that 
doesn't suck in some way.
+               \MediaWiki\suppressWarnings();
+               ini_set( 'session.serialize_handler', 'php_serialize' );
+               \MediaWiki\restoreWarnings();
+               if ( ini_get( 'session.serialize_handler' ) === 'php_serialize' 
) {
+                       return 'php_serialize';
+               }
+
+               // Next, just use the current format if it's supported.
+               $format = ini_get( 'session.serialize_handler' );
+               if ( in_array( $format, $formats, true ) ) {
+                       return $format;
+               }
+
+               // Last chance, see if any of our supported formats are 
accepted.
+               foreach ( $formats as $format ) {
+                       \MediaWiki\suppressWarnings();
+                       ini_set( 'session.serialize_handler', $format );
+                       \MediaWiki\restoreWarnings();
+                       if ( ini_get( 'session.serialize_handler' ) === $format 
) {
+                               return $format;
+                       }
+               }
+
+               throw new \DomainException(
+                       'Failed to set serialize handler to a supported 
format.' .
+                               ' Supported formats are: ' . join( ', ', 
$formats ) . '.'
+               );
+       }
+
+       /**
+        * Encode a session array to a string, using the format in 
session.serialize_handler
+        * @param array $data Session data
+        * @return string|null Encoded string, or null on failure
+        */
+       public static function encode( array $data ) {
+               $format = ini_get( 'session.serialize_handler' );
+               if ( !is_string( $format ) ) {
+                       throw new \UnexpectedValueException(
+                               'Could not fetch the value of 
session.serialize_handler'
+                       );
+               }
+               switch ( $format ) {
+                       case 'php':
+                               return self::encodePhp( $data );
+
+                       case 'php_binary':
+                               return self::encodePhpBinary( $data );
+
+                       case 'php_serialize':
+                               return self::encodePhpSerialize( $data );
+
+                       default:
+                               throw new \DomainException( "Unsupported format 
\"$format\"" );
+               }
+       }
+
+       /**
+        * Decode a session string to an array, using the format in 
session.serialize_handler
+        * @param string $data Session data
+        * @return array|null Data, or null on failure
+        */
+       public static function decode( $data ) {
+               if ( !is_string( $data ) ) {
+                       throw new \InvalidArgumentException( '$data must be a 
string' );
+               }
+
+               $format = ini_get( 'session.serialize_handler' );
+               if ( !is_string( $format ) ) {
+                       throw new \UnexpectedValueException(
+                               'Could not fetch the value of 
session.serialize_handler'
+                       );
+               }
+               switch ( $format ) {
+                       case 'php':
+                               return self::decodePhp( $data );
+
+                       case 'php_binary':
+                               return self::decodePhpBinary( $data );
+
+                       case 'php_serialize':
+                               return self::decodePhpSerialize( $data );
+
+                       default:
+                               throw new \DomainException( "Unsupported format 
\"$format\"" );
+               }
+       }
+
+       /**
+        * Serialize a value with error logging
+        * @param mixed $value
+        * @return string|null
+        */
+       private function serializeValue( $value ) {
+               try {
+                       return serialize( $value );
+               } catch ( \Exception $ex ) {
+                       self::$logger->error( 'Value serialization failed: ' . 
$ex->getMessage() );
+                       return null;
+               }
+       }
+
+       /**
+        * Unserialize a value with error logging
+        * @param string &$string On success, the portion used is removed
+        * @return array ( bool $success, mixed $value )
+        */
+       private function unserializeValue( &$string ) {
+               $oldError = error_get_last();
+
+               \MediaWiki\suppressWarnings();
+               $ret = unserialize( $string );
+               \MediaWiki\restoreWarnings();
+               $error = error_get_last();
+
+               $serialized = serialize( $ret );
+               $l = strlen( $serialized );
+               if ( substr( $string, 0, $l ) === $serialized ) {
+                       $string = substr( $string, $l );
+                       return array( true, $ret );
+               }
+
+               if ( $error === $oldError ) {
+                       if ( $ret !== false ) {
+                               self::$logger->error(
+                                       'Value unserialization failed: read 
value does not match original string'
+                               );
+                       } else {
+                               self::$logger->error( 'Value unserialization 
failed' );
+                       }
+               } else {
+                       self::$logger->error( 'Value unserialization failed: ' 
. $error['message'] );
+               }
+               return array( false, null );
+       }
+
+       /**
+        * Encode a session array to a string in 'php' format
+        * @note Generally you'll use self::encode() instead of this method.
+        * @param array $data Session data
+        * @return string|null Encoded string, or null on failure
+        */
+       public static function encodePhp( array $data ) {
+               $ret = '';
+               foreach ( $data as $key => $value ) {
+                       if ( strcmp( $key, intval( $key ) ) === 0 ) {
+                               self::$logger->warning( "Ignoring unsupported 
integer key \"$key\"" );
+                               continue;
+                       }
+                       if ( strcspn( $key, '|!' ) !== strlen( $key ) ) {
+                               self::$logger->error( "Serialization failed: 
Key with unsupported characters \"$key\"" );
+                               return null;
+                       }
+                       $v = self::serializeValue( $value );
+                       if ( $v === null ) {
+                               return null;
+                       }
+                       $ret .= "$key|$v";
+               }
+               return $ret;
+       }
+
+       /**
+        * Decode a session string in 'php' format to an array
+        * @note Generally you'll use self::decode() instead of this method.
+        * @param string $data Session data
+        * @return array|null Data, or null on failure
+        */
+       public static function decodePhp( $data ) {
+               if ( !is_string( $data ) ) {
+                       throw new \InvalidArgumentException( '$data must be a 
string' );
+               }
+
+               $ret = array();
+               while ( $data !== '' && $data !== false ) {
+                       $i = strcspn( $data, '!|' );
+                       if ( $i === strlen( $data ) ) {
+                               self::$logger->error( 'Unserialize failed: 
Failed to find key delimiter' );
+                               return null;
+                       }
+                       // "undefined" marker
+                       if ( $data[$i] === '!' ) {
+                               $data = substr( $data, $i + 1 );
+                               continue;
+                       }
+
+                       $key = substr( $data, 0, $i );
+                       $data = substr( $data, $i + 1 );
+                       if ( $data === '' || $data === false ) {
+                               self::$logger->error( 'Unserialize failed: 
unexpected end of string' );
+                               return null;
+                       }
+
+                       list( $ok, $value ) = self::unserializeValue( $data );
+                       if ( !$ok ) {
+                               return null;
+                       }
+                       $ret[$key] = $value;
+               }
+               return $ret;
+       }
+
+       /**
+        * Encode a session array to a string in 'php_binary' format
+        * @note Generally you'll use self::encode() instead of this method.
+        * @param array $data Session data
+        * @return string|null Encoded string, or null on failure
+        */
+       public static function encodePhpBinary( array $data ) {
+               $ret = '';
+               foreach ( $data as $key => $value ) {
+                       if ( strcmp( $key, intval( $key ) ) === 0 ) {
+                               self::$logger->warning( "Ignoring unsupported 
integer key \"$key\"" );
+                               continue;
+                       }
+                       $l = strlen( $key );
+                       if ( $l > 127 ) {
+                               self::$logger->warning( "Ignoring overlong key 
\"$key\"" );
+                               continue;
+                       }
+                       $v = self::serializeValue( $value );
+                       if ( $v === null ) {
+                               return null;
+                       }
+                       $ret .= chr( $l ) . $key . $v;
+               }
+               return $ret;
+       }
+
+       /**
+        * Decode a session string in 'php_binary' format to an array
+        * @note Generally you'll use self::decode() instead of this method.
+        * @param string $data Session data
+        * @return array|null Data, or null on failure
+        */
+       public static function decodePhpBinary( $data ) {
+               if ( !is_string( $data ) ) {
+                       throw new \InvalidArgumentException( '$data must be a 
string' );
+               }
+
+               $ret = array();
+               while ( $data !== '' && $data !== false ) {
+                       $l = ord( $data[0] );
+                       if ( strlen( $data ) < ( $l & 127 ) + 1 ) {
+                               self::$logger->error( 'Unserialize failed: 
unexpected end of string' );
+                               return null;
+                       }
+
+                       // "undefined" marker
+                       if ( $l > 127 ) {
+                               $data = substr( $data, ( $l & 127 ) + 1 );
+                               continue;
+                       }
+
+                       $key = substr( $data, 1, $l );
+                       $data = substr( $data, $l + 1 );
+                       if ( $data === '' || $data === false ) {
+                               self::$logger->error( 'Unserialize failed: 
unexpected end of string' );
+                               return null;
+                       }
+
+                       list( $ok, $value ) = self::unserializeValue( $data );
+                       if ( !$ok ) {
+                               return null;
+                       }
+                       $ret[$key] = $value;
+               }
+               return $ret;
+       }
+
+       /**
+        * Encode a session array to a string in 'php_serialize' format
+        * @note Generally you'll use self::encode() instead of this method.
+        * @param array $data Session data
+        * @return string|null Encoded string, or null on failure
+        */
+       public static function encodePhpSerialize( array $data ) {
+               try {
+                       return serialize( $data );
+               } catch ( \Exception $ex ) {
+                       self::$logger->error( 'PHP serialization failed: ' . 
$ex->getMessage() );
+                       return null;
+               }
+       }
+
+       /**
+        * Decode a session string in 'php_serialize' format to an array
+        * @note Generally you'll use self::decode() instead of this method.
+        * @param string $data Session data
+        * @return array|null Data, or null on failure
+        */
+       public static function decodePhpSerialize( $data ) {
+               if ( !is_string( $data ) ) {
+                       throw new \InvalidArgumentException( '$data must be a 
string' );
+               }
+
+               $oldError = error_get_last();
+
+               \MediaWiki\suppressWarnings();
+               $ret = unserialize( $data );
+               \MediaWiki\restoreWarnings();
+
+               // PHP strangely allows non-arrays to session_decode(), even 
though
+               // that breaks $_SESSION. Let's not do that.
+               if ( is_array( $ret ) ) {
+                       return $ret;
+               }
+
+               $error = error_get_last();
+               if ( $error === $oldError ) {
+                       self::$logger->error( 'PHP unserialization failed 
(value was not an array)' );
+               } else {
+                       self::$logger->error( 'PHP unserialization failed: ' . 
$error['message'] );
+               }
+               return null;
+       }
+
+}
+
+PhpSessionSerializer::setLogger( new \Psr\Log\NullLogger() );
diff --git a/tests/Wikimedia/.PhpSessionSerializerTest.php.swp 
b/tests/Wikimedia/.PhpSessionSerializerTest.php.swp
new file mode 100644
index 0000000..35bb647
--- /dev/null
+++ b/tests/Wikimedia/.PhpSessionSerializerTest.php.swp
Binary files differ
diff --git a/tests/Wikimedia/PhpSessionSerializerTest.php 
b/tests/Wikimedia/PhpSessionSerializerTest.php
new file mode 100644
index 0000000..ae3e4cd
--- /dev/null
+++ b/tests/Wikimedia/PhpSessionSerializerTest.php
@@ -0,0 +1,672 @@
+<?php
+/**
+ * php-session-serializer
+ *
+ * Copyright (C) 2015 Brad Jorsch <[email protected]>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @file
+ * @author Brad Jorsch <[email protected]>
+ */
+
+namespace Wikimedia;
+
+use Wikimedia\PhpSessionSerializer;
+use Psr\Log\LogLevel;
+
+// Wikimedia\PhpSessionSerializer relies on the auto-importing of ini_set and
+// ini_get from the global namespace. In this unit test, we override these with
+// a namespace-local version to allow for testing failure modes.
+$wgMockIniInstance = null;
+
+function ini_set( $var, $value ) {
+       global $wgMockIniInstance;
+       return $wgMockIniInstance
+               ? $wgMockIniInstance->mockIniSet( $var, $value )
+               : \ini_set( $var, $value );
+}
+
+function ini_get( $var ) {
+       global $wgMockIniInstance;
+       return $wgMockIniInstance
+               ? $wgMockIniInstance->mockIniGet( $var )
+               : \ini_get( $var );
+}
+
+/**
+ * @covers Wikimedia\PhpSessionSerializer
+ */
+class PhpSessionSerializerTest extends \PHPUnit_Framework_TestCase {
+
+       protected $oldFormat;
+
+       protected $mockIniAllowed;
+       protected $mockIniValue;
+
+       protected static $standardArray, $recursiveArray, $longKey;
+
+       public function mockIniGet( $var ) {
+               if ( $var !== 'session.serialize_handler' || !is_array( 
$this->mockIniAllowed ) ) {
+                       return \ini_get( $var );
+               }
+
+               return $this->mockIniValue;
+       }
+
+       public function mockIniSet( $var, $value ) {
+               if ( $var !== 'session.serialize_handler' || !is_array( 
$this->mockIniAllowed ) ) {
+                       return \ini_set( $var, $value );
+               }
+
+               if ( in_array( $value, $this->mockIniAllowed, true ) ) {
+                       $old = $this->mockIniValue;
+                       $this->mockIniValue = $value;
+                       return $old;
+               } else {
+                       // trigger_error to test that warnings are properly 
suppressed
+                       trigger_error( "mockIniSet disallows setting to 
'$value'", E_USER_WARNING );
+                       return false;
+               }
+       }
+
+       protected function initArrays() {
+               self::$longKey = str_pad( 'long key ', 128, '-' );
+               self::$standardArray = array(
+                       'true' => true,
+                       'false' => false,
+                       'int' => 42,
+                       'zero' => 0,
+                       'double' => 12.34,
+                       'inf' => INF,
+                       '-inf' => -INF,
+                       'string' => 'string',
+                       'empty string' => '',
+                       'array' => array( 0, 1, 100 => 100, 3 => 3, 2 => 2, 
'foo' => 'bar' ),
+                       'empty array' => array(),
+                       'object' => (object)array( 'foo' => 'foo' ),
+                       'empty object' => new \stdClass,
+                       'null' => null,
+                       '' => 'empty key',
+                       42 => 42,
+                       self::$longKey => 'long key',
+               );
+
+               $x = array();
+               $x['x']['y'] = &$x;
+               $x['x2']['y'] = &$x;
+               self::$recursiveArray = array( 'recursive' => $x );
+       }
+
+       protected function setUp() {
+               global $wgMockIniInstance;
+               parent::setUp();
+               $this->oldFormat = \ini_get( 'session.serialize_handler' );
+               PhpSessionSerializer::setLogger( new TestLogger() );
+               $wgMockIniInstance = $this;
+               $this->mockIniValue = $this->oldFormat;
+       }
+
+       protected function tearDown() {
+               global $wgMockIniInstance;
+               $wgMockIniInstance = null;
+               \ini_set( 'session.serialize_handler', $this->oldFormat );
+               parent::tearDown();
+       }
+
+       public function testSetSerializeHandler() {
+               // Test normal operation
+               $ret = PhpSessionSerializer::setSerializeHandler();
+               $this->assertSame( $ret, \ini_get( 'session.serialize_handler' 
) );
+
+               // Test setting php_serialize
+               $this->mockIniAllowed = array( 'php_serialize', 'php', 
'php_binary' );
+               $this->mockIniValue = 'php_binary';
+               $ret = PhpSessionSerializer::setSerializeHandler();
+               $this->assertSame( 'php_serialize', $this->mockIniValue );
+               $this->assertSame( $ret, $this->mockIniValue );
+
+               // Test defaulting to current if it's supported
+               $this->mockIniAllowed = array( 'php', 'php_binary' );
+               $this->mockIniValue = 'php_binary';
+               $ret = PhpSessionSerializer::setSerializeHandler();
+               $this->assertSame( 'php_binary', $this->mockIniValue );
+               $this->assertSame( $ret, $this->mockIniValue );
+
+               // Test choosing a supported format
+               $this->mockIniAllowed = array( 'php', 'php_binary' );
+               $this->mockIniValue = 'bogus';
+               $ret = PhpSessionSerializer::setSerializeHandler();
+               $this->assertSame( 'php', $this->mockIniValue );
+               $this->assertSame( $ret, $this->mockIniValue );
+
+               // Test failure
+               $this->mockIniAllowed = array( 'nothing', 'useful' );
+               $this->mockIniValue = 'bogus';
+               try {
+                       PhpSessionSerializer::setSerializeHandler();
+                       $this->fail( 'Expected exception not thrown' );
+               } catch ( \DomainException $ex ) {
+                       $this->assertSame(
+                               'Failed to set serialize handler to a supported 
format.' .
+                                       ' Supported formats are: php_serialize, 
php, php_binary.',
+                               $ex->getMessage()
+                       );
+               }
+       }
+
+       public static function provideHandlers() {
+               return array(
+                       array( 'php', 'test|b:1;' ),
+                       array( 'php_binary', "\x04testb:1;" ),
+                       array( 'php_serialize', 'a:1:{s:4:"test";b:1;}' ),
+                       array( 'bogus', new \DomainException( 'Unsupported 
format "bogus"' ) ),
+                       array(
+                               false,
+                               new \UnexpectedValueException( 'Could not fetch 
the value of session.serialize_handler' )
+                       ),
+               );
+       }
+
+       /**
+        * @dataProvider provideHandlers
+        */
+       public function testEncode( $format, $encoded ) {
+               $this->mockIniAllowed = array( 'php_serialize', 'php', 
'php_binary' );
+               $this->mockIniValue = $format;
+
+               $data = array( 'test' => true );
+               if ( $encoded instanceof \Exception ) {
+                       try {
+                               PhpSessionSerializer::encode( $data );
+                               $this->fail( 'Expected exception not thrown' );
+                       } catch ( \Exception $ex ) {
+                               $this->assertInstanceOf( get_class( $encoded ), 
$ex );
+                               $this->assertSame( $encoded->getMessage(), 
$ex->getMessage() );
+                       }
+               } else {
+                       $this->assertSame( $encoded, 
PhpSessionSerializer::encode( $data ) );
+               }
+       }
+
+       /**
+        * @dataProvider provideHandlers
+        */
+       public function testDecode( $format, $encoded ) {
+               $this->mockIniAllowed = array( 'php_serialize', 'php', 
'php_binary' );
+               $this->mockIniValue = $format;
+
+               $data = array( 'test' => true );
+               if ( $encoded instanceof \Exception ) {
+                       try {
+                               PhpSessionSerializer::decode( '' );
+                               $this->fail( 'Expected exception not thrown' );
+                       } catch ( \Exception $ex ) {
+                               $this->assertInstanceOf( get_class( $encoded ), 
$ex );
+                               $this->assertSame( $encoded->getMessage(), 
$ex->getMessage() );
+                       }
+               } else {
+                       $this->assertSame( $data, PhpSessionSerializer::decode( 
$encoded ) );
+               }
+       }
+
+       public static function provideEncodePhp() {
+               self::initArrays();
+               return array(
+                       'std' => array(
+                               self::$standardArray,
+                               
'true|b:1;false|b:0;int|i:42;zero|i:0;double|d:12.34;inf|d:INF;-inf|d:-INF;string|s:'
 .
+                                       '6:"string";empty 
string|s:0:"";array|a:6:{i:0;i:0;i:1;i:1;i:100;i:100;i:3;i:3;i:2;i' .
+                                       ':2;s:3:"foo";s:3:"bar";}empty 
array|a:0:{}object|O:8:"stdClass":1:{s:3:"foo";s:3:"f' .
+                                       'oo";}empty 
object|O:8:"stdClass":0:{}null|N;|s:9:"empty key";long key -------------' .
+                                       
'-----------------------------------------------------------------------------------'
 .
+                                       '-----------------------|s:8:"long 
key";',
+                               array(
+                                       array( LogLevel::WARNING, 'Ignoring 
unsupported integer key "42"' ),
+                               ),
+                       ),
+                       array(
+                               '***recursive***',
+                               
'recursive|a:2:{s:1:"x";a:1:{s:1:"y";a:2:{s:1:"x";a:1:{s:1:"y";R:3;}s:2:"x2";a:1:{s:'
 .
+                                       
'1:"y";R:3;}}}s:2:"x2";a:1:{s:1:"y";R:3;}}',
+                               array(),
+                       ),
+                       array(
+                               array( 'pipe|key' => 'piped' ),
+                               null,
+                               array(
+                                       array( LogLevel::ERROR, 'Serialization 
failed: Key with unsupported characters "pipe|key"' ),
+                               ),
+                       ),
+                       array(
+                               array( 'bang!key' => 'banged' ),
+                               null,
+                               array(
+                                       array( LogLevel::ERROR, 'Serialization 
failed: Key with unsupported characters "bang!key"' ),
+                               ),
+                       ),
+                       array(
+                               array( 'nan' => NAN ),
+                               'nan|d:NAN;',
+                               array(),
+                       ),
+                       array(
+                               array( 'function' => function () {
+                               } ),
+                               null,
+                               array(
+                                       array(
+                                               LogLevel::ERROR,
+                                               'Value serialization failed: 
Serialization of \'Closure\' is not allowed'
+                                       ),
+                               ),
+                       ),
+               );
+       }
+
+       public static function provideDecodePhp() {
+               $ret = array_filter( self::provideEncodePhp(), function ( $x ) {
+                       return $x[1] !== null;
+               } );
+               unset( $ret['std'][0][42] );
+               $ret['std'][2] = array();
+
+               $ret[] = array(
+                       null,
+                       'test|i:042;',
+                       array(
+                               array(
+                                       LogLevel::ERROR, 'Value unserialization 
failed: read value does not match original string'
+                               )
+                       ),
+               );
+               $ret[] = array(
+                       null,
+                       'test|i:42',
+                       array(
+                               array(
+                                       LogLevel::ERROR, 'Value unserialization 
failed: unserialize(): Error at offset 0 of 4 bytes'
+                               )
+                       ),
+               );
+               $ret[] = array(
+                       null,
+                       'test|i:42;X',
+                       array(
+                               array( LogLevel::ERROR, 'Unserialize failed: 
Failed to find key delimiter' )
+                       ),
+               );
+               $ret[] = array(
+                       null,
+                       'test|i:42;X|',
+                       array(
+                               array( LogLevel::ERROR, 'Unserialize failed: 
unexpected end of string' )
+                       ),
+               );
+               $ret[] = array(
+                       array( 'test' => 42, 'test2' => 43 ),
+                       'test|i:42;X!test2|i:43;',
+                       array(),
+               );
+               $ret[] = array(
+                       array(),
+                       'test!',
+                       array(),
+               );
+
+               return $ret;
+       }
+
+       /**
+        * @dataProvider provideEncodePhp
+        */
+       public function testEncodePhp( $data, $encoded, $log ) {
+               if ( $data === '***recursive***' ) {
+                       self::initArrays();
+                       $data = self::$recursiveArray;
+               }
+
+               $logger = new TestLogger( true );
+               PhpSessionSerializer::setLogger( $logger );
+               $this->assertSame( $encoded, PhpSessionSerializer::encodePhp( 
$data ) );
+               $this->assertSame( $log, $logger->getBuffer() );
+       }
+
+       /**
+        * @dataProvider provideDecodePhp
+        */
+       public function testDecodePhp( $data, $encoded, $log ) {
+               if ( $data === '***recursive***' ) {
+                       self::initArrays();
+                       $data = self::$recursiveArray;
+               }
+
+               $logger = new TestLogger( true );
+               PhpSessionSerializer::setLogger( $logger );
+               if ( $data === self::$recursiveArray ) {
+                       $ret = PhpSessionSerializer::decodePhp( $encoded );
+                       $this->assertSame( $ret['recursive']['x'], 
$ret['recursive']['x']['y']['x'] );
+                       $this->assertSame( $ret['recursive']['x']['y'], 
$ret['recursive']['x2']['y'] );
+               } elseif ( isset( $data['nan'] ) ) {
+                       $ret = PhpSessionSerializer::decodePhp( $encoded );
+                       $this->assertTrue( is_nan( $ret['nan'] ) );
+               } else {
+                       $this->assertEquals( $data, 
PhpSessionSerializer::decodePhp( $encoded ) );
+               }
+               $this->assertSame( $log, $logger->getBuffer() );
+       }
+
+       public static function provideEncodePhpBinary() {
+               self::initArrays();
+               return array(
+                       'std' => array(
+                               self::$standardArray,
+                               
"\x04trueb:1;\x05falseb:0;\x03inti:42;\x04zeroi:0;\x06doubled:12.34;\x03infd:INF;\x04"
 .
+                                       
"-infd:-INF;\x06strings:6:\"string\";\x0cempty 
strings:0:\"\";\x05arraya:6:{i:0;i:0;i:1;" .
+                                       
"i:1;i:100;i:100;i:3;i:3;i:2;i:2;s:3:\"foo\";s:3:\"bar\";}\x0bempty 
arraya:0:{}\x06object" .
+                                       
"O:8:\"stdClass\":1:{s:3:\"foo\";s:3:\"foo\";}\x0cempty 
objectO:8:\"stdClass\":0:{}\x04" .
+                                       "nullN;\0s:9:\"empty key\";",
+                               array(
+                                       array( LogLevel::WARNING, 'Ignoring 
unsupported integer key "42"' ),
+                                       array( LogLevel::WARNING, 'Ignoring 
overlong key "' . self::$longKey . '"' ),
+                               ),
+                       ),
+                       array(
+                               '***recursive***',
+                               
"\x09recursivea:2:{s:1:\"x\";a:1:{s:1:\"y\";a:2:{s:1:\"x\";a:1:{s:1:\"y\";R:3;}s:2:\"x2\""
 .
+                               
";a:1:{s:1:\"y\";R:3;}}}s:2:\"x2\";a:1:{s:1:\"y\";R:3;}}",
+                               array(),
+                       ),
+                       array(
+                               array( 'pipe|key' => 'piped' ),
+                               "\x08pipe|keys:5:\"piped\";",
+                               array(),
+                       ),
+                       array(
+                               array( 'bang!key' => 'banged' ),
+                               "\x08bang!keys:6:\"banged\";",
+                               array(),
+                       ),
+                       array(
+                               array( 'nan' => NAN ),
+                               "\x03nand:NAN;",
+                               array(),
+                       ),
+                       array(
+                               array( 'function' => function () {
+                               } ),
+                               null,
+                               array(
+                                       array(
+                                               LogLevel::ERROR,
+                                               'Value serialization failed: 
Serialization of \'Closure\' is not allowed'
+                                       ),
+                               ),
+                       ),
+               );
+       }
+
+       public static function provideDecodePhpBinary() {
+               $ret = array_filter( self::provideEncodePhpBinary(), function ( 
$x ) {
+                       return $x[1] !== null;
+               } );
+               unset( $ret['std'][0][42] );
+               unset( $ret['std'][0][self::$longKey] );
+               $ret['std'][2] = array();
+
+               $ret[] = array(
+                       null,
+                       "\x04testi:042;",
+                       array(
+                               array(
+                                       LogLevel::ERROR, 'Value unserialization 
failed: read value does not match original string'
+                               )
+                       ),
+               );
+               $ret[] = array(
+                       null,
+                       "\x04testi:42",
+                       array(
+                               array(
+                                       LogLevel::ERROR, 'Value unserialization 
failed: unserialize(): Error at offset 0 of 4 bytes'
+                               )
+                       ),
+               );
+               $ret[] = array(
+                       null,
+                       "\x50test",
+                       array(
+                               array(
+                                       LogLevel::ERROR, 'Unserialize failed: 
unexpected end of string'
+                               )
+                       ),
+               );
+               $ret[] = array(
+                       null,
+                       "\x04test",
+                       array(
+                               array(
+                                       LogLevel::ERROR, 'Unserialize failed: 
unexpected end of string'
+                               )
+                       ),
+               );
+               $ret[] = array(
+                       array( 'test' => 42, 'test2' => 43 ),
+                       "\x04testi:42;\x81X\x05test2i:43;",
+                       array(),
+               );
+               $ret[] = array(
+                       array(),
+                       "\x84test",
+                       array(),
+               );
+
+               return $ret;
+       }
+
+       /**
+        * @dataProvider provideEncodePhpBinary
+        */
+       public function testEncodePhpBinary( $data, $encoded, $log ) {
+               if ( $data === '***recursive***' ) {
+                       self::initArrays();
+                       $data = self::$recursiveArray;
+               }
+
+               $logger = new TestLogger( true );
+               PhpSessionSerializer::setLogger( $logger );
+               $this->assertSame( $encoded, 
PhpSessionSerializer::encodePhpBinary( $data ) );
+               $this->assertSame( $log, $logger->getBuffer() );
+       }
+
+       /**
+        * @dataProvider provideDecodePhpBinary
+        */
+       public function testDecodePhpBinary( $data, $encoded, $log ) {
+               if ( $data === '***recursive***' ) {
+                       self::initArrays();
+                       $data = self::$recursiveArray;
+               }
+
+               $logger = new TestLogger( true );
+               PhpSessionSerializer::setLogger( $logger );
+               if ( $data === self::$recursiveArray ) {
+                       $ret = PhpSessionSerializer::decodePhpBinary( $encoded 
);
+                       $this->assertSame( $ret['recursive']['x'], 
$ret['recursive']['x']['y']['x'] );
+                       $this->assertSame( $ret['recursive']['x']['y'], 
$ret['recursive']['x2']['y'] );
+               } elseif ( isset( $data['nan'] ) ) {
+                       $ret = PhpSessionSerializer::decodePhpBinary( $encoded 
);
+                       $this->assertTrue( is_nan( $ret['nan'] ) );
+               } else {
+                       $this->assertEquals( $data, 
PhpSessionSerializer::decodePhpBinary( $encoded ) );
+               }
+               $this->assertSame( $log, $logger->getBuffer() );
+       }
+
+       public static function provideEncodePhpSerialize() {
+               self::initArrays();
+               return array(
+                       array(
+                               self::$standardArray,
+                               
'a:17:{s:4:"true";b:1;s:5:"false";b:0;s:3:"int";i:42;s:4:"zero";i:0;s:6:"double";d:1'
 .
+                                       
'2.34;s:3:"inf";d:INF;s:4:"-inf";d:-INF;s:6:"string";s:6:"string";s:12:"empty 
string"' .
+                                       
';s:0:"";s:5:"array";a:6:{i:0;i:0;i:1;i:1;i:100;i:100;i:3;i:3;i:2;i:2;s:3:"foo";s:3:"'
 .
+                                       'bar";}s:11:"empty 
array";a:0:{}s:6:"object";O:8:"stdClass":1:{s:3:"foo";s:3:"foo";}s' .
+                                       ':12:"empty 
object";O:8:"stdClass":0:{}s:4:"null";N;s:0:"";s:9:"empty key";i:42;i:42;' .
+                                       's:128:"long key 
--------------------------------------------------------------------' .
+                                       
'---------------------------------------------------";s:8:"long key";}',
+                               array(),
+                       ),
+                       array(
+                               '***recursive***',
+                               
'a:1:{s:9:"recursive";a:2:{s:1:"x";a:1:{s:1:"y";a:2:{s:1:"x";a:1:{s:1:"y";R:4;}s:2:"'
 .
+                                       
'x2";a:1:{s:1:"y";R:4;}}}s:2:"x2";a:1:{s:1:"y";R:4;}}}',
+                               array(),
+                       ),
+                       array(
+                               array( 'pipe|key' => 'piped' ),
+                               'a:1:{s:8:"pipe|key";s:5:"piped";}',
+                               array(),
+                       ),
+                       array(
+                               array( 'bang!key' => 'banged' ),
+                               'a:1:{s:8:"bang!key";s:6:"banged";}',
+                               array(),
+                       ),
+                       array(
+                               array( 'nan' => NAN ),
+                               'a:1:{s:3:"nan";d:NAN;}',
+                               array(),
+                       ),
+                       array(
+                               array( 'function' => function () {
+                               } ),
+                               null,
+                               array(
+                                       array(
+                                               LogLevel::ERROR,
+                                               'PHP serialization failed: 
Serialization of \'Closure\' is not allowed'
+                                       ),
+                               ),
+                       ),
+               );
+       }
+
+       public static function provideDecodePhpSerialize() {
+               $ret = array_filter( self::provideEncodePhpSerialize(), 
function ( $x ) {
+                       return $x[1] !== null;
+               } );
+
+               $ret[] = array(
+                       null,
+                       'Bogus',
+                       array(
+                               array(
+                                       LogLevel::ERROR, 'PHP unserialization 
failed: unserialize(): Error at offset 0 of 5 bytes'
+                               )
+                       ),
+               );
+               $ret[] = array(
+                       null,
+                       'O:8:"stdClass":1:{s:3:"foo";s:3:"bar";}',
+                       array(
+                               array( LogLevel::ERROR, 'PHP unserialization 
failed (value was not an array)' )
+                       ),
+               );
+
+               return $ret;
+       }
+
+       /**
+        * @dataProvider provideEncodePhpSerialize
+        */
+       public function testEncodePhpSerialize( $data, $encoded, $log ) {
+               if ( $data === '***recursive***' ) {
+                       self::initArrays();
+                       $data = self::$recursiveArray;
+               }
+
+               $logger = new TestLogger( true );
+               PhpSessionSerializer::setLogger( $logger );
+               $this->assertSame( $encoded, 
PhpSessionSerializer::encodePhpSerialize( $data ) );
+               $this->assertSame( $log, $logger->getBuffer() );
+       }
+
+       /**
+        * @dataProvider provideDecodePhpSerialize
+        */
+       public function testDecodePhpSerialize( $data, $encoded, $log ) {
+               if ( $data === '***recursive***' ) {
+                       self::initArrays();
+                       $data = self::$recursiveArray;
+               }
+
+               $logger = new TestLogger( true );
+               PhpSessionSerializer::setLogger( $logger );
+               if ( $data === self::$recursiveArray ) {
+                       $ret = PhpSessionSerializer::decodePhpSerialize( 
$encoded );
+                       $this->assertSame( $ret['recursive']['x'], 
$ret['recursive']['x']['y']['x'] );
+                       $this->assertSame( $ret['recursive']['x']['y'], 
$ret['recursive']['x2']['y'] );
+               } elseif ( isset( $data['nan'] ) ) {
+                       $ret = PhpSessionSerializer::decodePhpSerialize( 
$encoded );
+                       $this->assertTrue( is_nan( $ret['nan'] ) );
+               } else {
+                       $this->assertEquals( $data, 
PhpSessionSerializer::decodePhpSerialize( $encoded ) );
+               }
+               $this->assertSame( $log, $logger->getBuffer() );
+       }
+
+       public static function provideDecoders() {
+               return array(
+                       array( 'decode' ),
+                       array( 'decodePhp' ),
+                       array( 'decodePhpBinary' ),
+                       array( 'decodePhpSerialize' ),
+               );
+       }
+
+       /**
+        * @dataProvider provideDecoders
+        * @expectedException InvalidArgumentException
+        * @expectedExceptionMessage $data must be a string
+        */
+       public function testDecoderTypeCheck( $method ) {
+               call_user_func( array( '\\Wikimedia\\PhpSessionSerializer', 
$method ), 1 );
+       }
+
+}
+
+class TestLogger extends \Psr\Log\AbstractLogger {
+       private $collect = false;
+       private $buffer = array();
+
+       public function __construct( $collect = false ) {
+               $this->collect = $collect;
+       }
+
+       public function getBuffer() {
+               return $this->buffer;
+       }
+
+       public function log( $level, $message, array $context = array() ) {
+               $message = trim( $message );
+               if ( $this->collect ) {
+                       $this->buffer[] = array( $level, $message );
+               } else {
+                       echo "LOG[$level]: $message\n";
+               }
+       }
+}

-- 
To view, visit https://gerrit.wikimedia.org/r/246255
To unsubscribe, visit https://gerrit.wikimedia.org/r/settings

Gerrit-MessageType: newchange
Gerrit-Change-Id: I9c083d47bb5c1a9e06223634f816a4ffb89036b9
Gerrit-PatchSet: 1
Gerrit-Project: php-session-serializer
Gerrit-Branch: master
Gerrit-Owner: Anomie <[email protected]>

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