- Webbots, Spiders, and Screen Scrapers
- ACKNOWLEDGMENTS
- Introduction
- I. FUNDAMENTAL CONCEPTS AND TECHNIQUES
- 1. WHAT'S IN IT FOR YOU?
- 2. IDEAS FOR WEBBOT PROJECTS
- 3. DOWNLOADING WEB PAGES
- 4. PARSING TECHNIQUES
- 5. AUTOMATING FORM SUBMISSION
- 6. MANAGING LARGE AMOUNTS OF DATA
- II. PROJECTS
- 7. PRICE-MONITORING WEBBOTS
- 8. IMAGE-CAPTURING WEBBOTS
- 9. LINK-VERIFICATION WEBBOTS
- 10. ANONYMOUS BROWSING WEBBOTS
- 11. SEARCH-RANKING WEBBOTS
- 12. AGGREGATION WEBBOTS
- 13. FTP WEBBOTS
- 14. NNTP NEWS WEBBOTS
- 15. WEBBOTS THAT READ EMAIL
- 16. WEBBOTS THAT SEND EMAIL
- 17. CONVERTING A WEBSITE INTO A FUNCTION
- III. ADVANCED TECHNICAL CONSIDERATIONS
- 18. SPIDERS
- 19. PROCUREMENT WEBBOTS AND SNIPERS
- 20. WEBBOTS AND CRYPTOGRAPHY
- 21. AUTHENTICATION
- 22. ADVANCED COOKIE MANAGEMENT
- 23. SCHEDULING WEBBOTS AND SPIDERS
- IV. LARGER CONSIDERATIONS
- 24. DESIGNING STEALTHY WEBBOTS AND SPIDERS
- 25. WRITING FAULT-TOLERANT WEBBOTS
- 26. DESIGNING WEBBOT-FRIENDLY WEBSITES
- 27. KILLING SPIDERS
- 28. KEEPING WEBBOTS OUT OF TROUBLE
- A. PHP/CURL REFERENCE
- Creating a Minimal PHP/CURL Session
- Initiating PHP/CURL Sessions
- Setting PHP/CURL Options
- CURLOPT_URL
- CURLOPT_RETURNTRANSFER
- CURLOPT_REFERER
- CURLOPT_FOLLOWLOCATION and CURLOPT_MAXREDIRS
- CURLOPT_USERAGENT
- CURLOPT_NOBODY and CURLOPT_HEADER
- CURLOPT_TIMEOUT
- CURLOPT_COOKIEFILE and CURLOPT_COOKIEJAR
- CURLOPT_HTTPHEADER
- CURLOPT_SSL_VERIFYPEER
- CURLOPT_USERPWD and CURLOPT_UNRESTRICTED_AUTH
- CURLOPT_POST and CURLOPT_POSTFIELDS
- CURLOPT_VERBOSE
- CURLOPT_PORT
- Executing the PHP/CURL Command
- Closing PHP/CURL Sessions
- B. STATUS CODES
- C. SMS EMAIL ADDRESSES
- About the Author
- Colophon
We'll explore three types of online authentication. For each case, you'll receive examples of authentication scripts designed specifically to work with password-protected sections of this book's website. You can experiment (and make mistakes) on these practice pages before writing authenticating webbots that work on real websites. The location of the practice pages is shown in Table 21-2.
Table 21-2. Location of Authentication Practice Pages on the Book's Website
Authentication Method | Location of Practice Pages |
|---|---|
Basic authentication | http://www.schrenk.com/nostarch/webbots/basic_authentication |
Cookies sessions | http://www.schrenk.com/nostarch/webbots/cookie_authentication |
Query sessions | http://www.schrenk.com/nostarch/webbots/query_authentication |
For simplicity, all of the authentication examples on the book's website use the login criteria shown in Table 21-3.
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