Pro PHP and jQuery by Jason Lengstorf.pdf - Computer Science ...

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210 CHAPTER 6 ■ PASSWORD PROTECTION SENSITIVE ACTIONS AND AREAS } ?> } * Add the salt to the hash and return it */ return $salt . sha1($salt . $string); Creating a Test Method for Salted Hashes To see how salted hashes work, create a quick test method for _getSaltedHash() called testSaltedHash(). This will be a public function that calls and outputs the values, enabling you to see how the script functions. In the Admin class, define the testSaltedHash() method: private $_saltLength = 7; public function __construct($db=NULL, $saltLength=NULL) {...} public function processLoginForm() {...} private function _getSaltedHash($string, $salt=NULL) {...} public function testSaltedHash($string, $salt=NULL) { return $this->_getSaltedHash($string, $salt); } Next, add a new file called test.php to use this function and place it in the public folder (/public/test.php). Inside this function, call the initialization file, create a new Admin class, and output three hashes of this word: test. Create the first hash with no salt, and then sleep for one second to get a new timestamp. Create the second hash with no salt, and then sleep for another second. Finally, create the third hash using the salt from the second hash. Insert the following code to accomplish this test:
$obj = new Admin($dbo); // Load a hash of the word test and output it $hash1 = $obj->testSaltedHash("test"); echo "Hash 1 without a salt:", $hash1, ""; // Pause execution for a second to get a different timestamp sleep(1); // Load a second hash of the word test $hash2 = $obj->testSaltedHash("test"); echo "Hash 2 without a salt:", $hash2, ""; // Pause execution for a second to get a different timestamp sleep(1); // Rehash the word test with the existing salt $hash3 = $obj->testSaltedHash("test", $hash2); echo "Hash 3 with the salt from hash 2:", $hash3; ?> CHAPTER 6 ■ PASSWORD PROTECTION SENSITIVE ACTIONS AND AREAS ■ Note The sleep() function delays execution of a script by a given number of seconds, passed as its sole argument. You can learn more about this function at http://php.net/sleep. Your results will not be identical because the timestamp hashes used for the salt will differ; however, your results should look something like this: Hash 1 without a salt: 518fd85bb85815af85e88b7c43d892238af9a5ca5775807 Hash 2 without a salt: 93b14e3f42ca09cafc1330b592669a5d02e9815bc2f69de Hash 3 with the salt from hash 2: 93b14e3f42ca09cafc1330b592669a5d02e9815bc2f69de 211
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THE EXPERT’S VOICE ® IN OPEN SOU
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ii Pro PHP and jQuery Copyright ©
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iv Contents at a Glance ■About th
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vi ■ CONTENTS Understanding jQuer
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viii ■ CONTENTS Summary .........
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x ■ CONTENTS ■Chapter 9: Perfor
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xii About the Author ■ Jason Leng
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xiv Acknowledgments I feel like I s
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C H A P T E R 1 ■ ■ ■ Introdu
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CHAPTER 1 ■ INTRODUCING JQUERY Th
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SETTING UP A LOCAL TESTING ENVIRONM
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google.load("jquery", "1.4.2");
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Basic Selectors CHAPTER 1 ■ INTRO
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Only one paragraph in our document
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$(".foo+p"); CHAPTER 1 ■ INTRODUC
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$("p:odd"); [ p.foo, p#bar ] Select
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$("p:parent"); [ p, p.foo, p, p#bar
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which returns the following in the
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Selecting Only Enabled or Disabled
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26 CHAPTER 2 ■ COMMON JQUERY ACTI
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C H A P T E R 3 ■ ■ ■ Object-
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$obj = new MyClass; var_dump($obj);
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CHAPTER 3 ■ OBJECT-ORIENTED PROGR
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$obj = new MyClass; // Get the valu
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} public function setProperty($newv
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} } return $this->getProperty(); pu
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Create a new object $newobj = new M
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} } // Create a new object $newobj
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Private Properties and Methods CHAP
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} public function __construct() { e
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*/ CHAPTER 3 ■ OBJECT-ORIENTED PR
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Ease of Implementation CHAPTER 3
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C H A P T E R 4 ■ ■ ■ Build a
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CHAPTER 4 ■ BUILD AN EVENTS CALEN
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# # DocumentRoot: The directory out
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CHAPTER 4 ■ BUILD AN EVENTS CALEN
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} ?> } } } CHAPTER 4 ■ BUILD AN E
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■ Note For the sake of brevity, D
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} ?> CHAPTER 4 ■ BUILD AN EVENTS
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} ?> } include_once $filename; CHAP
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private $_startDay; public function
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138 CHAPTER 4 ■ BUILD AN EVENTS C
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Page 249: P A R T 3 ■ ■ ■ Combining jQu
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260 CHAPTER 7 ■ ENHANCING THE USE
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262 CHAPTER 7 ■ ENHANCING THE USE
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264 CHAPTER 8 ■ EDITING THE CALEN
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P A R T 4 ■ ■ ■ Advancing jQu
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312 CHAPTER 9 ■ PERFORMING FORM V
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C H A P T E R 10 ■ ■ ■ Extend
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$.validDate = function(date, option
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Modifying the Initialization Script
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Adding Methods to jQuery CHAPTER 10
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over, then returns it to its origin
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CHAPTER 10■ EXTENDING JQUERY ■
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Defines default values for the plug
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}); // Loads the event data from th
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■ ■ ■ Index ■ Special Chara
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■ C Calendar app JavaScript initi
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saving new calendar events in addin
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:eq( ) method, 17, 20, 26-27 equals
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eginning of string, 324 character c
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asic selectors in by class name, 12
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.die( ) method, 75-76 .error( ) met
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.parents( ) method, 33 .parentsUnti
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overview, 328 regex pattern to vali
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