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#!/usr/bin/perl -w |
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|
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use strict; |
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use CGI; |
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|
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$| = 1; |
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|
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# Settings |
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my ($incdir) = "../htdocs"; |
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|
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# Include files |
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my ($doctype) = "$incdir/doctype.inc"; |
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my ($style) = "$incdir/style.inc"; |
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my ($header) = "$incdir/header.inc"; |
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my ($footer) = "$incdir/footer.inc"; |
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my ($menu) = "$incdir/menu-static.inc" ; |
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|
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my ($query) = new CGI; |
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|
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# Note filenames may only have one dot in them, in the ".txt". |
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# This prevents malicious users using "../" to view files. |
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my ($doc) = ($query->param('doc') =~ /^\s*([^\.]*?\.txt)\s*$/); |
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|
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# This should be application/xhtml+xml |
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print "Content-type: text/html\n\n"; |
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|
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unless (defined $doc) { |
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print "The link to this page was broken - it must specify a .txt file."; |
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exit; |
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} |
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|
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# Prevent hackers from supplying a malformed document string. |
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# I.e. only allow normal characters, slashes and dots. |
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unless ($doc =~ /^[a-zA-Z_\-0-9\.\/]+$/) { |
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print "Malformed request."; |
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exit; |
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} |
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$doc = "../htdocs/documentation/".$doc; |
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|
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my($docname) = $doc =~ /\/([^\/]+)$/; |
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|
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&print_html($doctype); |
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|
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print <<"END"; |
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|
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<head> |
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<title> |
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i-scream plain text documentation viewer |
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</title> |
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END |
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|
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&print_html($style); |
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|
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print <<"END"; |
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|
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</head> |
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<body> |
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<div id="container"> |
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<div id="main"> |
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END |
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|
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&print_html($header); |
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|
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print <<"END"; |
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|
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<div id="contents"> |
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<h1 class="top"> |
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i-scream documentation viewer |
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</h1> |
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<h2> |
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$docname |
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</h2> |
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END |
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|
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&print_file($doc); |
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|
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print <<"END"; |
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|
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</div> |
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END |
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|
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&print_html($footer); |
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|
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print <<"END"; |
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|
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</div> |
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END |
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|
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&print_html($menu); |
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|
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print <<"END"; |
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|
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</div> |
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</body> |
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</html> |
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END |
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|
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exit 0; |
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|
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# Print a file, whilst escaping HTML: - |
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sub print_file { |
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my ($urls) = '(' . join ('|', qw{ |
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http |
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telnet |
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gopher |
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file |
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wais |
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ftp |
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} ) |
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. ')'; |
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|
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my ($ltrs) = '\w'; |
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my ($gunk) = '/#~:.?+=&%@!\-'; |
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my ($punc) = '.:?\-'; |
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my ($any) = "${ltrs}${gunk}${punc}"; |
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my ($filename) = @_; |
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if(open(FILE, $filename)) { |
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print " <pre>\n"; |
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# Use $_ implicitly throughout. |
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while (<FILE>) { |
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# Must do the next line first! |
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s/&/&/g; |
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s/</</g; |
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s/>/>/g; |
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s/"/"/g; |
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s/\b($urls:[$any]+?)(?=[$punc]*[^$any]|$)/<a href="$1">$1<\/a>/igox; |
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print; |
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} |
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print "\n</pre>"; |
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} |
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else { |
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print "Failed to open $docname."; |
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} |
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} |
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|
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# Print the contents of a file containing html |
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sub print_html ($) { |
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my ($filename) = @_; |
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open(FILE, $filename); |
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while(<FILE>) { |
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print; |
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} |
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close FILE; |
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} |
