Beginning Web Development With Perl : From Novice to ... - Nabo

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ContentsAbout the Author . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiiiAbout the Technical Reviewer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvAcknowledgments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviiIntroduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xixPART 1 ■ ■ ■ CGI <strong>Development</strong> with <strong>Perl</strong>■CHAPTER 1 The CGI Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3An Overview of CGI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3What You Need for This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Hello World, CGI Style . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Function-Oriented Hello World. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Object-Oriented Hello World. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9A Closer Look at the CGI.pm Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11HTML Shortcuts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Dynamic Pages and Forms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Cookies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15Environment Variables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23Viewing Environment Variables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23Carrying Values Between Forms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24Interaction with the System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26Debugging and Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27Verbose Output. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28Syntax Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28The Carp Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29Other Troubleshooting Tips. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31Security Considerations with CGI Programs . . . . . . . . . . . . . . . . . . . . . . . . . 31File Permissions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32Taint Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32Strictness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33Untrusted Data from Forms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33Untrusted Data from Cookies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34v
Page 3 and 4: Beginning Web Development with Perl
Page 5: PART 5 ■ ■ ■ Creating Web Tem
Page 9 and 10: viii■CONTENTSMirroring a Web Site
Page 11 and 12: x■CONTENTSmod_cgi vs. mod_perl .
Page 13 and 14: xii■CONTENTSTypes of Data . . . .
Page 15 and 16: About the Technical Reviewer■JAME
Page 17 and 18: IntroductionThis is a book about Pe
Page 19 and 20: PART 1■ ■ ■CGI Developmentwit
Page 21 and 22: 4CHAPTER 1 ■ THE CGI MODULEFor qu
Page 23 and 24: 6CHAPTER 1 ■ THE CGI MODULEThe mo
Page 25 and 26: 8CHAPTER 1 ■ THE CGI MODULEuse CG
Page 27 and 28: 10CHAPTER 1 ■ THE CGI MODULEFigur
Page 29 and 30: 12CHAPTER 1 ■ THE CGI MODULEThe C
Page 31 and 32: 14CHAPTER 1 ■ THE CGI MODULEHowev
Page 33 and 34: 16CHAPTER 1 ■ THE CGI MODULECooki
Page 35 and 36: 18CHAPTER 1 ■ THE CGI MODULEBakin
Page 37 and 38: 20CHAPTER 1 ■ THE CGI MODULE■No
Page 39 and 40: 22CHAPTER 1 ■ THE CGI MODULEThe s
Page 41 and 42: 24CHAPTER 1 ■ THE CGI MODULEFigur
Page 43 and 44: 26CHAPTER 1 ■ THE CGI MODULE} els
Page 45 and 46: 28CHAPTER 1 ■ THE CGI MODULEprobl
Page 47 and 48: 30CHAPTER 1 ■ THE CGI MODULEThe C
Page 49 and 50: 32CHAPTER 1 ■ THE CGI MODULEFile
Page 51 and 52: 34CHAPTER 1 ■ THE CGI MODULERathe
Page 53 and 54: 36CHAPTER 2 ■ POPULAR CGI MODULES
Page 55 and 56: 38CHAPTER 2 ■ POPULAR CGI MODULES
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40CHAPTER 2 ■ POPULAR CGI MODULES
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CHAPTER 3■ ■ ■Databases and P
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CHAPTER 3 ■ DATABASES AND PERL 51
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CHAPTER 4■ ■ ■System Interact
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CHAPTER 4 ■ SYSTEM INTERACTION 75
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PART 2■ ■ ■Internet Interacti
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90CHAPTER 5 ■ LWP MODULESSOLVING
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92CHAPTER 5 ■ LWP MODULESAs you c
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94CHAPTER 5 ■ LWP MODULESListing
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96CHAPTER 5 ■ LWP MODULES
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98CHAPTER 5 ■ LWP MODULESThis exa
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100CHAPTER 5 ■ LWP MODULESyou hav
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102CHAPTER 5 ■ LWP MODULES$browse
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104CHAPTER 5 ■ LWP MODULESRecall
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CHAPTER 6■ ■ ■Net:: ToolsThe
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CHAPTER 6 ■ NET:: TOOLS 109When y
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CHAPTER 6 ■ NET:: TOOLS 111When l
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CHAPTER 6 ■ NET:: TOOLS 113if ($n
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CHAPTER 6 ■ NET:: TOOLS 115TopThe
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CHAPTER 6 ■ NET:: TOOLS 117Checki
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CHAPTER 6 ■ NET:: TOOLS 119Creati
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CHAPTER 6 ■ NET:: TOOLS 121LocalA
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CHAPTER 6 ■ NET:: TOOLS 123The me
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CHAPTER 6 ■ NET:: TOOLS 125$smtpc
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CHAPTER 6 ■ NET:: TOOLS 127a call
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CHAPTER 6 ■ NET:: TOOLS 129LIMITA
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CHAPTER 6 ■ NET:: TOOLS 131When c
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CHAPTER 6 ■ NET:: TOOLS 133Securi
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CHAPTER 7■ ■ ■SOAP-Based Web
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CHAPTER 7 ■ SOAP-BASED WEB SERVIC
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CHAPTER 8■ ■ ■Perl and RSSRSS
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CHAPTER 8 ■ PERL AND RSS 155You
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CHAPTER 8 ■ PERL AND RSS 157In th
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CHAPTER 8 ■ PERL AND RSS 159print
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CHAPTER 8 ■ PERL AND RSS 161Weath
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CHAPTER 8 ■ PERL AND RSS 163Summa
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166CHAPTER 9 ■ XML PARSING WITH P
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CHAPTER 10■ ■ ■Apache and mod
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CHAPTER 10 ■ APACHE AND MOD_PERL
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CHAPTER 11■ ■ ■Development wi
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CHAPTER 11 ■ DEVELOPMENT WITH MOD
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PART 5■ ■ ■Creating Web Templ
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234CHAPTER 12 ■ THE TEMPLATE TOOL
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264CHAPTER 13 ■ PERL WEB SITES WI
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APPENDIX■ ■ ■Perl BasicsThis
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APPENDIX ■ PERL BASICS 285In the
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APPENDIX ■ PERL BASICS 287Binary,
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APPENDIX ■ PERL BASICS 289print '
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APPENDIX ■ PERL BASICS 291# quote
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APPENDIX ■ PERL BASICS 293Further
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APPENDIX ■ PERL BASICS 295print()
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APPENDIX ■ PERL BASICS 297• 0 a
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APPENDIX ■ PERL BASICS 299Some pr
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APPENDIX ■ PERL BASICS 301We’ll
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APPENDIX ■ PERL BASICS 303#!/usr/
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APPENDIX ■ PERL BASICS 309$a = 4;
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APPENDIX ■ PERL BASICS 313Variabl
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APPENDIX ■ PERL BASICS 315Now we
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APPENDIX ■ PERL BASICS 317Compari
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APPENDIX ■ PERL BASICS 319Here’
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APPENDIX ■ PERL BASICS 321The ope
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APPENDIX ■ PERL BASICS 323Let’s
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APPENDIX ■ PERL BASICS 325In Perl
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APPENDIX ■ PERL BASICS 327Countin
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APPENDIX ■ PERL BASICS 329Infinit
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APPENDIX ■ PERL BASICS 331my $num
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APPENDIX ■ PERL BASICS 333becomes
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APPENDIX ■ PERL BASICS 335two thr
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APPENDIX ■ PERL BASICS 3375 ** 1
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Index■Symbols" " (double quotes),
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■INDEX 341mod_cgi vs. mod_perl ex
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■INDEX 343using for mod_perl, 202
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■INDEX 345LWP modules, 89-105defi
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■INDEX 347parsers, 173parsingcodi
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■INDEX 349get_year component, 280
Page 359 and 360:
■INDEX 351uploading files with CG
Page 361:
■INDEX 353reading RSS with, 154-1
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