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Apache Modules Book, The: Application Development with Apache

Apache Modules Book, The: Application Development with Apache

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Description

  • Copyright 2007
  • Dimensions: 7" x 9-1/4"
  • Pages: 592
  • Edition: 1st
  • eBook (Watermarked)
  • ISBN-10: 0-13-279923-5
  • ISBN-13: 978-0-13-279923-2

"Do you learn best by example and experimentation? This book is ideal. Have your favorite editor and compiler ready–you'll encounter example code you'll want to try right away. You've picked the right book–this is sure to become the de facto standard guide to writing Apache modules."

–Rich Bowen, coauthor, Apache Administrators Handbook, Apache Cookbook, and The Definitive Guide to Apache mod_rewrite


"A first-rate guide to getting the most out of Apache as a modular application platform–sure to become a must-read for any Apache programmer, from beginner to experienced professional. It builds up carefully and meticulously from the absolute basics, while including chapters on everything from the popular Apache DBD Framework to best practices, security, and debugging."

–Noirin Plunkett, documentation committer to the Apache httpd project, and member of the ASF conference committee


The Only Comprehensive Guide to Developing Apache 2.x Modules and Applications

Apache is more than the world's most popular Web server–it's also an extraordinarily powerful and extensible development platform. Now, ApacheTutor.org's Nick Kew has written The Apache Modules Book, the first start-to-finish, example-rich guide for every developer who wants to make the most of Apache.


Kew begins with detailed, accessible introductions to Apache's architecture and API, then illuminates all the techniques you'll need, from request processing through code security. He brings together the best of both worlds: powerful C-based techniques for accomplishing tasks Perl or PHP can't handle, implemented with tools that deliver all the productivity you'd expect from higher-level languages. Utilizing realistic code samples, Kew introduces techniques documented in no other book-and, often, nowhere else at all.


Coverage includes

  • Using Apache Portable Runtime (APR) to streamline C development and avoid its pitfalls
  • Leveraging Apache DBD to build applications far more scalable than classic LAMP software
  • Working with the latest Apache 2.x features: filter modules, XML support, and smart proxies
  • Mastering best practices, from thread safety to multi-platform development
  • Utilizing the Apache Authentication Framework
  • Tracing and debugging problems in both Apache and your custom modules
Foreword
Preface 
Acknowledgments
About the Author 
Chapter 1 Applications Development with Apache
Chapter 2 The Apache Platform and Architecture
Chapter 3 The Apache Portable Runtime
Chapter 4 Programming Techniques and Caveats
Chapter 5 Writing a Content Generator
Chapter 6 Request Processing Cycle and Metadata Handlers
Chapter 7 AAA: Access, Authentication, and Authorization
Chapter 8 Filter Modules
Chapter 9 Configuration for Modules
Chapter 10 Extending the API
Chapter 11 The Apache Database Framework
Chapter 12 Module Debugging
Appendix A Apache License
Appendix B Contributor License Agreements
Appendix C Hypertext Transfer Protocol: HTTP/1.1
Index


About the Web Site

ApacheTutor.org contains code examples from the book, all designed for easy use and integration into existing applications.

Sample Content

Table of Contents

Foreword xxi

Preface xxiii

Acknowledgments xxvii

About the Author xxix

Chapter 1 Applications Development with Apache 1

1.1 A Brief History of the Apache Web Server 1

1.2 The Apache Software Foundation 3

1.3 The Apache Development Process 6

1.4 Apache and Intellectual Property 12

1.5 Further Reading 16

1.6 Summary 19

Chapter 2 The Apache Platform and Architecture 21

2.1 Overview 21

2.3 Multi-Processing Modules 26

2.4 Basic Concepts and Structures 29

2.5 Other Key API Components 39

2.6 Apache Configuration Basics 41

2.7 Request Processing in Apache 42

2.8 Summary 51

Chapter 3 The Apache Portable Runtime 53

3.1 APR 54

3.2 APR-UTIL 56

3.3 Basic Conventions 57

3.4 Resource Management: APR Pools 59

3.5 Selected APR Topics 68

3.6 Databases in APR/Apache 79

3.7 Summary 83

Chapter 4 Programming Techniques and Caveats 85

4.1 Apache Coding Conventions 85

4.2 Managing Module Data 88

4.3 Communicating Between Modules 90

4.4 Thread-Safe Programming Issues 92

4.5 Managing Persistent Data 93

4.6 Cross-Platform Programming Issues 99

4.7 Cross-MPM Programming Issues 101

4.8 Secure Programming Issues 106

4.9 External Dependencies and Libraries 114

4.10 Modules Written and Compiled in Other Languages 120

4.11 Summary 122

Chapter 5 Writing a Content Generator 123

5.1 The HelloWorld Module 124

5.2 The Request, the Response, and the Environment 130

5.3 The Default Handler 144

5.4 Summary 148

Chapter 6 Request Processing Cycle and Metadata Handlers 151

6.1 HTTP 152

6.2 Request Processing in Apache 155

6.3 Diverting a Request: The Internal Redirect 161

6.4 Gathering Information: Subrequests 163

6.5 Developing a Module 168

6.6 Summary 174

Chapter 7 AAA: Access, Authentication, and Authorization 177

7.1 Security 177

7.2 An Overview of AAA 180

7.3 AAA in Apache 1.x and 2.0 182

7.4 AAA in Apache 2.1/2.2 182

7.5 AAA Logic 185

7.6 Writing AAA Modules 187

7.7 Implementing a Custom Login Scheme 195

7.8 Summary 199

Chapter 8 Filter Modules 201

8.1 Input and Output Filters 202

8.2 Content, Protocol, and Connection Filters 202

8.3 Anatomy of a Filter 205

8.4 The Filter API and Objects 207

8.5 Filter Objects 208

8.6 Filter I/O 210

8.7 Smart Filtering in Apache 2.2 211

8.8 Example: Filtering Text by Direct Manipulation of Buckets 217

8.9 Complex Parsing 221

8.10 Filtering Through an Existing Parser 225

8.11 stdio-Like Filter I/O 227

8.12 Input Filters and the Pull API 230

8.13 Summary 235

Chapter 9 Configuration for Modules 237

9.1 Configuration Basics 237

9.2 Configuration Data Structs 239

9.3 Managing a Module Configuration 239

9.4 Implementing Configuration Directives 242

9.5 The Configuration Hierarchy 250

9.6 Context in Configuration Functions 255

9.7 Custom Configuration Containers 257

9.8 Alternative Configuration Methods 261

9.9 Summary 262

Chapter 10 Extending the API 263

10.1 Implementing New Functions in Apache 264

10.2 Hooks and Optional Hooks 267

10.3 The Provider API 272

10.4 Providing a Service 277

10.5 Cross-Platform API Builds 284

10.6 Summary 288

Chapter 11 The Apache Database Framework 289

11.1 The Need for a New Framework 290

11.2 The DBD Architecture 292

11.3 The apr_dbd API 292

11.4 The ap_dbd API 302

11.5 An Example Application Module: mod_authn_dbd 303

11.6 Developing a New DBD Driver 306

11.7 Summary 320

Chapter 12 Module Debugging 323

12.1 Logging for Debugging 324

12.2 Running Apache Under a Debugger 327

12.3 Special-Purpose Hooks and Modules 333

12.4 Filter Debugging 338

12.5 Summary 341

Appendix A Apache License 343

Appendix B Contributor License Agreements 349

Appendix C Hypertext Transfer Protocol: HTTP/1.1 357

Index 531

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