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

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■CONTENTSixCreating a SOAP Listener. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146Consuming a SOAP Web Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148Calling Your SOAP Server . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148Calling the National Weather Service SOAP Service . . . . . . . . . . . . 149Security Considerations with SOAP Web Services. . . . . . . . . . . . . . . . . . . 152Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152■CHAPTER 8 Perl and RSS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153RSS: Versioning Fun . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153Reading RSS with XML::RSS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154Parsing RSS Feeds. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155Debugging RSS Scripts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158Writing RSS with XML::RSS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159Security Considerations with RSS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163■CHAPTER 9 XML Parsing with Perl . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165XML Parsing Methods. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165XML Parsing Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166Parsing XML with XML::Simple . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166Data::Dumper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168XML::Simple Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170Parsing XML with XML::SAX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172XML::SAX Parser Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173SAX2 Handler Interfaces. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173A Basic Parser and Handler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175Using Tree-Based Parsing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179Security Considerations with XML Parsing . . . . . . . . . . . . . . . . . . . . . . . . . 180Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180PART 4 ■ ■ ■ Performance Enhancementwith mod_perl■CHAPTER 10 Apache and mod_perl . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183How Apache Handles Requests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183Apache’s Child Processes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184Forking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186
x■CONTENTSmod_cgi vs. mod_perl . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187Benefits of mod_perl. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188Drawbacks of mod_perl . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188Beyond CGI Programming with mod_perl . . . . . . . . . . . . . . . . . . . . . 188Apache::Registry vs. Apache::PerlRun . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189mod_perl Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193Getting the Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193Unpacking the Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194Looking for Prerequisites . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194Building and Installing mod_perl . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194Choosing Compile Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198Configuring for mod_perl . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198From mod_cgi to mod_perl . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199Security Considerations with mod_perl. . . . . . . . . . . . . . . . . . . . . . . . . . . . 200Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200■CHAPTER 11 Development with mod_perl . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201Thinking in mod_perl . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201Initial Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201Apache::Registry vs. Apache::PerlRun, Revisited . . . . . . . . . . . . . . . 202Preloading Perl Modules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207Preloading Apache::DBI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207Preloading Other Modules and Methods . . . . . . . . . . . . . . . . . . . . . . 209Working with the Apache Request Object . . . . . . . . . . . . . . . . . . . . . . . . . . 209Accessing the Request . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 210Accessing the Response. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220Working with Cookies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222Uploading Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225Working with the Apache Server. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 226Getting Information About the Server . . . . . . . . . . . . . . . . . . . . . . . . . 226Controlling Logging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227Security Considerations with mod_perl, Revisited . . . . . . . . . . . . . . . . . . 229Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 230PART 5 ■ ■ ■ Creating Web Templates■CHAPTER 12 The Template Toolkit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 233Perl and Templates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 233Template Toolkit Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234Template Toolkit Example. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234Using the Template Toolkit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 235
Page 3 and 4: Beginning Web Development with Perl
Page 5 and 6: PART 5 ■ ■ ■ Creating Web Tem
Page 8 and 9: ■CONTENTSvii■CHAPTER 4 System I
Page 12 and 13: ■CONTENTSxiTemplate Toolkit Synta
Page 14 and 15: About the Author■STEVE SUEHRING i
Page 16 and 17: AcknowledgmentsThanks to James Lee
Page 18 and 19: xx■INTRODUCTIONThis book will use
Page 20 and 21: CHAPTER 1■ ■ ■The CGI ModuleT
Page 22 and 23: CHAPTER 1 ■ THE CGI MODULE 5for t
Page 24 and 25: CHAPTER 1 ■ THE CGI MODULE 7Obvio
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Page 50 and 51: CHAPTER 1 ■ THE CGI MODULE 33Also
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CHAPTER 2 ■ POPULAR CGI MODULES 4
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50CHAPTER 3 ■ DATABASES AND PERLT
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52CHAPTER 3 ■ DATABASES AND PERLm
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54CHAPTER 3 ■ DATABASES AND PERLl
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56CHAPTER 3 ■ DATABASES AND PERLc
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58CHAPTER 3 ■ DATABASES AND PERLR
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62CHAPTER 3 ■ DATABASES AND PERLw
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64CHAPTER 3 ■ DATABASES AND PERLA
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74CHAPTER 4 ■ SYSTEM INTERACTION
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76CHAPTER 4 ■ SYSTEM INTERACTIONt
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78CHAPTER 4 ■ SYSTEM INTERACTIONc
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80CHAPTER 4 ■ SYSTEM INTERACTIONA
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82CHAPTER 4 ■ SYSTEM INTERACTIONm
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84CHAPTER 4 ■ SYSTEM INTERACTIONs
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86CHAPTER 4 ■ SYSTEM INTERACTIONr
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CHAPTER 5■ ■ ■LWP ModulesLWP
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CHAPTER 5 ■ LWP MODULES 91HTTP Re
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CHAPTER 5 ■ LWP MODULES 93Get Fun
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CHAPTER 5 ■ LWP MODULES 95When ca
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CHAPTER 5 ■ LWP MODULES 97These a
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CHAPTER 5 ■ LWP MODULES 99Recall
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CHAPTER 5 ■ LWP MODULES 101which
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CHAPTER 5 ■ LWP MODULES 103For th
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CHAPTER 5 ■ LWP MODULES 105Obviou
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108CHAPTER 6 ■ NET:: TOOLSCreatin
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110CHAPTER 6 ■ NET:: TOOLSThe out
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112CHAPTER 6 ■ NET:: TOOLSmy $pop
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114CHAPTER 6 ■ NET:: TOOLSthe POP
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116CHAPTER 6 ■ NET:: TOOLS($messa
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118CHAPTER 6 ■ NET:: TOOLSListing
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120CHAPTER 6 ■ NET:: TOOLSFor the
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122CHAPTER 6 ■ NET:: TOOLSNet::SM
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124CHAPTER 6 ■ NET:: TOOLS$smtpco
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126CHAPTER 6 ■ NET:: TOOLSuse Net
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128CHAPTER 6 ■ NET:: TOOLSListing
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130CHAPTER 6 ■ NET:: TOOLSFor exa
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132CHAPTER 6 ■ NET:: TOOLSSending
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PART 3■ ■ ■XML and RSS
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138CHAPTER 7 ■ SOAP-BASED WEB SER
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154CHAPTER 8 ■ PERL AND RSSFigure
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156CHAPTER 8 ■ PERL AND RSShttp:/
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158CHAPTER 8 ■ PERL AND RSSDebugg
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160CHAPTER 8 ■ PERL AND RSS$rsswr
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162CHAPTER 8 ■ PERL AND RSSListin
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CHAPTER 9■ ■ ■XML Parsing wit
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CHAPTER 9 ■ XML PARSING WITH PERL
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PART 4■ ■ ■PerformanceEnhance
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184CHAPTER 10 ■ APACHE AND MOD_PE
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202CHAPTER 11 ■ DEVELOPMENT WITH
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CHAPTER 12■ ■ ■The Template T
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CHAPTER 12 ■ THE TEMPLATE TOOLKIT
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CHAPTER 13■ ■ ■Perl Web Sites
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CHAPTER 13 ■ PERL WEB SITES WITH
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284APPENDIX ■ PERL BASICSKeywords
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286APPENDIX ■ PERL BASICS$ perl n
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288APPENDIX ■ PERL BASICSAnd line
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290APPENDIX ■ PERL BASICSCan you
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292APPENDIX ■ PERL BASICSBy defau
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294APPENDIX ■ PERL BASICS#!/usr/b
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296APPENDIX ■ PERL BASICSThe last
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298APPENDIX ■ PERL BASICSThe NOT
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300APPENDIX ■ PERL BASICSprint "S
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302APPENDIX ■ PERL BASICSthe syst
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304APPENDIX ■ PERL BASICS$ perl s
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306APPENDIX ■ PERL BASICSThis cod
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308APPENDIX ■ PERL BASICS$a = 6 *
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310APPENDIX ■ PERL BASICS$a = "A9
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312APPENDIX ■ PERL BASICS#!/usr/b
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314APPENDIX ■ PERL BASICSmy $name
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316APPENDIX ■ PERL BASICSis short
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318APPENDIX ■ PERL BASICSLet’s
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320APPENDIX ■ PERL BASICSOther Te
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322APPENDIX ■ PERL BASICS}}}actio
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324APPENDIX ■ PERL BASICSNotice t
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326APPENDIX ■ PERL BASICSLooping
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328APPENDIX ■ PERL BASICSuse stri
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330APPENDIX ■ PERL BASICSuntil ($
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332APPENDIX ■ PERL BASICSuse stri
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334APPENDIX ■ PERL BASICSdoneAll
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336APPENDIX ■ PERL BASICS$ perl r
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338APPENDIX ■ PERL BASICSSummaryT
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340■INDEXmethods for retrieving r
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342■INDEXdo() method for, 62dumpi
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344■INDEXhello option for Net::SM
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346■INDEXNet::DNS module, 125-128
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348■INDEXrecord with Net::DNS mod
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350■INDEXstoring mail server in e
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352■INDEXlogging based on, 229pri
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