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202 CHAPTER 6 ■ PASSWORD PROTECTION SENSITIVE ACTIONS AND AREAS Creating the Admin Class With your table in place, you can now start structuring the class that will interact with it. In the class folder, create a new file called class.admin.inc.php (/sys/class/class.admin.inc.php). This class will contain methods to allow users to log in and log out. Defining the Class First, you define the class, which will extend DB_Connect in order to have database access. This class will have one private property, $_saltLength, which you’ll learn about a little later in this section. The constructor will call the parent constructor to ensure a database object exists, and then it will check whether an integer was passed as the constructor’s second argument. If so, the integer is used as the value of $_saltLength. Now insert the following code into class.admin.inc.php to define the class, the property, and the constructor:
} ?> } /* * If an int was passed, set the length of the salt */ if ( is_int($saltLength) ) { $this->_saltLength = $saltLength; } Building a Method to Check the Login Credentials CHAPTER 6 ■ PASSWORD PROTECTION SENSITIVE ACTIONS AND AREAS The data from login.php needs to be validated in order to verify that a user is authorized to make changes to the events table. You can follow these steps to accomplish this: 1. Verify that the form was submitted using the proper action. 2. Sanitize the user input with htmlentities(). 3. Retrieve user data that has a matching username from the database. 4. Store the user information in a variable, $user, and make sure it isn’t empty. 5. Generate a salted hash from the user-supplied password and the password stored in the database. 6. Make sure the hashes match. 7. Store user data in the current session using an array and return TRUE. ■ Note Salted hashes will be covered in the next section, “Build a Method to Create Salted Hashes.” Start by defining the method in the Admin class and completing the preceding Steps 1 and 2 using the following bold code:
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THE EXPERT’S VOICE ® IN OPEN SOU
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ii Pro PHP and jQuery Copyright ©
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iv Contents at a Glance ■About th
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vi ■ CONTENTS Understanding jQuer
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viii ■ CONTENTS Summary .........
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x ■ CONTENTS ■Chapter 9: Perfor
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xii About the Author ■ Jason Leng
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xiv Acknowledgments I feel like I s
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C H A P T E R 1 ■ ■ ■ Introdu
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CHAPTER 1 ■ INTRODUCING JQUERY Th
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SETTING UP A LOCAL TESTING ENVIRONM
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google.load("jquery", "1.4.2");
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Basic Selectors CHAPTER 1 ■ INTRO
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Only one paragraph in our document
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$(".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 $_startDay; public function
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138 CHAPTER 4 ■ BUILD AN EVENTS C
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252 CHAPTER 7 ■ ENHANCING THE USE
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264 CHAPTER 8 ■ EDITING THE CALEN
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P A R T 4 ■ ■ ■ Advancing jQu
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312 CHAPTER 9 ■ PERFORMING FORM V
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C H A P T E R 10 ■ ■ ■ Extend
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$.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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