2 # Common functions for HTML/XHTML output generation
3 # Copyright (C) 2003 Jan Kratochvil <project-www.jankratochvil.net@jankratochvil.net>
5 # This program is free software; you can redistribute it and/or modify
6 # it under the terms of the GNU General Public License as published by
7 # the Free Software Foundation; exactly version 2 of June 1991 is required
9 # This program is distributed in the hope that it will be useful,
10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 # GNU General Public License for more details.
14 # You should have received a copy of the GNU General Public License
15 # along with this program; if not, write to the Free Software
16 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 require 5.6.0; # at least 'use warnings;' but we need some 5.6.0+ modules anyway
21 our $VERSION=do { my @r=(q$Revision$=~/\d+/g); sprintf "%d.".("%03d"x$#r),@r; };
27 our @EXPORT=qw(&require &a_href &a_href_cz &vskip &img $W &top_dir);
28 our @ISA=qw(Exporter);
30 use WebConfig; # for %WebConfig
31 require CGI; # for &escapeHTML
32 require Image::Size; # for &imgsize
33 use File::Basename; # &basename
34 use Carp qw(cluck confess);
36 require HTTP::BrowserDetect;
37 require HTTP::Negotiate;
42 # Undo 'www/engine/httpd-restart' as it may use obsolete Perl for 'mod_perl'
43 delete $ENV{"PERLLIB"};
44 delete $ENV{"LD_LIBRARY_PATH"};
51 # $W->{"force_charset"}
52 # %{$W->{"packages_used"}
53 # $W->{"heading_done"}
54 # $W->{"footer_passed"}
56 # %{$W->{"headers_lc"}} # maps lc($headers_key)=>$headers_key
57 # @{$W->{"packages_used"}{$Apache::Registry::curstash}}}
64 $W={ %WebConfig,%args }; # override %WebConfig settings
66 $W->{"__PACKAGE__"}||="Apache::ROOT".$Apache::Registry::curstash;
68 $W->{"top_dir"}||=eval '$'.$W->{"__PACKAGE__"}.'::top_dir';
70 do { $W->{$_}=0 if !defined $W->{$_}; } for ("detect_ent");
71 do { $W->{$_}=0 if !defined $W->{$_}; } for ("detect_js");
72 do { $W->{$_}=1 if !defined $W->{$_}; } for ("have_css"); # AFAIK it does not hurt anyone.
73 do { $W->{$_}=1 if !defined $W->{$_}; } for ("heading");
74 do { $W->{$_}=1 if !defined $W->{$_}; } for ("footer");
75 do { $W->{$_}=1 if !defined $W->{$_}; } for ("footer_delimit");
76 do { $W->{$_}=1 if !defined $W->{$_}; } for ("footer_mailme");
77 do { $W->{$_}=1 if !defined $W->{$_}; } for ("footer_ids");
78 do { $W->{$_}=1 if !defined $W->{$_}; } for ("indexme");
79 do { $W->{$_}="" if !defined $W->{$_}; } for ("head");
80 do { $W->{$_}="" if !defined $W->{$_}; } for ("head_css");
83 for (qw(footer_mailme footer_ids)) {
84 $W->{$_}=0 if !$W->{"footer"};
85 $footer_any=1 if $W->{$_};
87 $W->{"footer"}=0 if !$footer_any;
88 $W->{"footer_delimit"}=0 if !$W->{"footer"};
90 $W->{"r"}=Apache->request();
92 $W->{"QUERY_STRING"}=$W->{"r"}->args() || "";
93 if ($W->{"QUERY_STRING"}=~/[&]amp;have_ent/)
94 { $W->{"have_ent"}=0; }
95 elsif ($W->{"QUERY_STRING"}=~ /[&]have_ent/)
96 { $W->{"have_ent"}=1; }
98 { delete $W->{"have_ent"}; }
99 if ($W->{"detect_ent"} && !defined $W->{"have_ent"} && $W->{"r"}->method() eq "GET") {
100 $W->{"head"}.='<meta http-equiv="Refresh" content="0; URL='
101 .CGI::escapeHTML("http://".$W->{"r"}->hostname()."/".($W->{"r"}->uri()=~m#^/*(.*)$#)[0]
102 ."?".($W->{"QUERY_STRING"} || "detect_ent_glue=1").'&have_ent=detect')
105 $W->{"QUERY_STRING"}=~s/([&])amp;/$1/g;
106 $W->{"r"}->args($W->{"QUERY_STRING"});
107 $ENV{"QUERY_STRING"}=$W->{"QUERY_STRING"};
108 # Do not: $W->{"r"}->args()
109 # as it parses only QUERY_STRING (not POST data).
110 $W->{"args"}={ CGI->new()->Vars() };
112 do { $W->{$_}=$ENV{"HTTP_ACCEPT"} if !defined $W->{$_}; } for ("accept");
113 do { $W->{$_}=$ENV{"HTTP_USER_AGENT"} if !defined $W->{$_}; } for ("user_agent");
115 $W->{"browser"}=HTTP::BrowserDetect->new($W->{"user_agent"});
117 if (!defined $W->{"have_style"}) {
118 $W->{"have_style"}=(!$W->{"browser"}->netscape() || $W->{"browser"}->major>4 ? 1 : 0);
121 $W->{"have_js"}=($W->{"args"}{"have_js"} ? 1 : 0);
122 if ($W->{"detect_js"} && !$W->{"have_js"}) {
123 $W->{"head"}.='<script type="text/javascript" src="'.top_dir().'/have_js.js.pl"></script>'."\n";
126 do { args_check(%$_) if $_; } for ($W->{"args_check"});
133 do { return $_ if $_; } for ($W->{"top_dir"});
134 return $INC[0]; # fallback
146 my $aref=($W->{"packages_used"}{$Apache::Registry::curstash}||=[]);
148 if !{ map(($_=>1),@$aref) }->{$class}; # Prevent duplicated entries.
150 1; # Otherwise 'require' would already file above.
159 while (my($name,$regex)=each(%tmpl)) {
160 my $name_html="Parametr <span class=\"quote\">".CGI::escapeHTML($name)."</span>";
161 my $val=$W->{"args"}{$name};
162 fatal "$name_html <span class=\"quote\">".CGI::escapeHTML($val)."</span>"
163 ." does not match required regex <span class=\"quote\">".CGI::escapeHTML($regex)."</span>"
164 if defined $val && $val!~/$regex/;
165 fatal "$name_html is required"
174 return '<p'.(!defined $height ? "" : ' style="height: '.$height.';"').'> </p>'."\n";
181 $msg="UNKNOWN" if !$msg;
183 # heading(false/*title*/,false/*indexme*/); # notitle is always safe, don't index the error message
184 print "\n".vskip("3ex")."<hr /><h1 class=\"error\">FATAL ERROR: $msg!</h1>\n"
185 ."<p>You can report this problem's details to"
186 ." ".a_href("mailto:".$W->{"admin_mail"},"admin of this website").".</p>\n";
192 exit 1 if $W->{"footer_passed"}++; # deadlock prevention:
194 print vskip if $W->{"footer_delimit"};
196 print "<hr />\n" if $W->{"footer"};
198 if ($W->{"footer_mailme"}) {
199 print '<form action="'.top_dir().'/SendMsg.pl" method="post" onsubmit="'
200 ."this.elements['msgscript'].value=this.elements['msghtml'].value;"
201 ."this.elements['msghtml'].value='';"
204 print '<p align="right">'."\n";
205 print '<input name="msgscript" type="hidden" />'."\n";
206 print '<input name="msghtml" type="text" size="32" alt="Message" />'."\n";
207 print '<input name="submit" type="submit" value="Quick Note" />'."\n";
209 print '</form>'."\n";
212 if ($W->{"footer_ids"}) {
213 print '<p class="cvs-id">';
214 print join("<br />\n",map({ my $package=$_;
215 my $cvs_id=(eval('$'.$package."::CVS_ID")
216 # || $package # debug
222 $cvs_id='$'.$cvs_id.'$'; # Eaten by 'q' operator.
223 my @cvs_id_split=split / +/,$cvs_id;
224 if (@cvs_id_split==8) {
228 for (qw(.html.pl .pl .pm),"") {
230 last if -r top_dir()."/$file$ext";
231 cluck "Class file $file not found" if !$ext;
235 .a_href((map({ my $s=$_; $s=~s#/viewcvs/#$&~checkout~/#; $s; } $W->{"viewcvs"}))[0]."$file?rev=".$cvs_id_split[2],
237 $cvs_id_split[1]=a_href($W->{"viewcvs"}.$file,
238 ($package!~/^Apache::/ ? $package : $cvs_id_split[1]));
239 $cvs_id_split[5]=&{$W->{"cvs_id_author"}}($cvs_id_split[5]);
241 join " ",@cvs_id_split;
247 @{$W->{"packages_used"}{$Apache::Registry::curstash}},
252 if ($W->{"heading"}) {
253 do { &{$_}() if $_; } for ($W->{"footing"});
256 print "</body></html>\n";
264 while (my($key,$val)=each(%pairs)) {
265 do { cluck "Headers already sent"; next; } if $W->{"heading_done"};
266 for ($W->{"headers_lc"}{lc $key} || ()) {
267 delete $W->{"headers"}{$_};
269 $W->{"headers_lc"}{lc $key}=$key;
270 $W->{"headers"}{$key}=$val;
280 elsif ($size<1024*1024)
281 { $size=sprintf "%.1fK",$size/1024; }
283 { $size=sprintf "%.1fM",$size/1024/1024; }
292 return $url!~m#^[a-z]+://#;
297 my($url,$contents,%args)=@_;
299 do { $$_=1 if !defined $$_; } for (\$args{"size"});
300 $contents=CGI::escapeHTML($url) if !defined $contents;
303 my $urlent=CGI::escapeHTML($url);
306 elsif (url_is_local $url)
308 elsif (defined $W->{"have_ent"} && !$W->{"have_ent"}) # non-ent client
310 elsif ($W->{"have_ent"}) # ent client
312 else # unknown client, &CGI::escapeHTML should not be needed here
313 { $r.=CGI::escapeHTML(top_dir()."/Redirect.pl?location=".uri_escape($url)); }
314 $r.='">'.$contents.'</a>';
315 if ($args{"size"} && url_is_local($url) && $url=~/[.](?:gz|Z|rpm|zip|deb|lha)/) { # Downloadable?
317 { cluck "File not readable: $url"; }
319 $r.=' ('.size_display((stat($url))[7]).')';
327 # Do not: PerlModule Apache::ForwardedFor
328 # PerlPostReadRequestHandler Apache::ForwardedFor
329 # As 'Apache::ForwardedFor' takes the first of $ENV{"HTTP_X_FORWARDED_FOR"}
330 # while the contents is '127.0.0.1, 213.220.195.171' if client has its own proxy.
331 # We must take the last item ourselves.
332 my $r=$ENV{"HTTP_X_FORWARDED_FOR"} || $W->{"r"}->get_remote_host();
339 return "CZ" eq Geo::IP->new()->country_code_by_addr(remote_ip());
344 my($url,$contents,%args)=@_;
346 return a_href $url,$contents,%args if is_cz();
352 my($width,$height)=@_;
354 return ($W->{"have_style"} ? "style=\"border:0;width:${width}px;height:${height}px\"" : "border=\"0\"")
355 ." width=\"$width\" height=\"$height\"";
358 sub negotiate_variant (%)
362 my @fields=("id","qs","content-type","encoding","charset","lang","size");
363 return [ map(($args{$_}),@fields) ];
367 { "id"=>"png","qs"=>1.0,"content-type"=>"image/png" },
368 { "id"=>"gif","qs"=>0.9,"content-type"=>"image/gif" },
370 my $img_variants_re='[.](?:'.join('|',map(($_->{"id"}),@img_variants)).')$';
376 return $file_base if !url_is_local($file_base)
377 # Known image extension?
378 || $file_base=~m#$img_variants_re#o;
381 for my $var (@img_variants) {
382 my $file=$file_base.".".$var->{"id"};
383 # TODO: Somehow quickly check dependencies?
384 system 'make >&2 -s --no-print-directory'
385 .' -C '."'".File::Basename::dirname($file)."' '".File::Basename::basename($file)."'"
387 push @nego_variants,negotiate_variant(
389 "size"=>(stat $file)[7],
392 # Do not: ,$W->{"r"});
393 # but should we provide somehow either 'HTTP::Headers' or 'HTTP::Request' ?
394 my $ext=HTTP::Negotiate::choose(\@nego_variants);
395 $ext||=$img_variants[0]->{"id"}; # &HTTP::Negotiate::choose failed?
396 return $file_base.".".$ext;
401 my($file_base,$alt,$attrs)=@_;
403 my $file=img_src $file_base;
404 my($width,$height)=Image::Size::imgsize($file);
405 $alt=CGI::escapeHTML($alt);
406 return "<img src=\"$file\" alt=\"$alt\" title=\"$alt\" ".img_size($width,$height)
407 .(!$attrs ? "" : " ".$attrs)." />";
412 my($class,$filename)=@_;
415 open F,$filename or die "Cannot open \"$filename\": $!";
428 push @r,shift @arr; # key
438 # $ENV{"CLIENT_CHARSET"} ignored (mod_czech support dropped!)
439 my $client_charset=$W->{"force_charset"} || "us-ascii";
440 header("Content-Style-Type"=>"text/css");
441 header("Content-Script-Type"=>"text/javascript");
443 while (my($key,$val)=each(%{$W->{"headers"}})) {
444 $W->{"r"}->header_out($key,$val);
446 $W->{"r"}->send_http_header("text/html; charset=$client_charset"); # "Content-type"; do not use header()
448 return if $W->{"heading_done"}++;
449 exit if $W->{"r"}->header_only();
451 if (1) { # || !$msie_major || $msie_major>=4) # TODO:dyn
452 print '<?xml version="1.0" encoding="'.$client_charset.'"?>'."\n";
454 print '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">'."\n";
455 print '<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US">'."\n";
456 print '<head><title>'.CGI::escapeHTML($W->{"title_prefix"})
457 .join("",map({ ': '.CGI::escapeHTML($_); } ($W->{"title"} || ())))
460 if ($W->{"have_css"}) {
462 <style type="text/css"><!--
463 .cvs-id { font-family: monospace; }
464 .error { color: red; background-color: transparent; }
465 .quote { font-family: monospace; }
466 .nowrap { white-space: nowrap; }
467 .centered { text-align: center; }
468 .tab-bold { font-weight: bold; }
469 .tab-head { font-weight: bold; color: yellow; background-color: transparent; }
471 background-color: black;
474 :link { color: aqua; background-color: transparent; }
475 :visited { color: teal; background-color: transparent; }
476 h1,h2 { color: yellow; background-color: transparent; }
478 caption { caption-side: bottom; }
479 .footer img { vertical-align: middle; }
481 print $W->{"head_css"}."\n";
482 print "--></style>\n";
485 print '<meta name="robots" content="'.($W->{"indexme"} ? "" : "no" ).'index,follow" />'."\n";
487 print "</head><body";
488 print ' bgcolor="black" text="white" link="aqua" vlink="teal"'
489 if $W->{"browser"}->netscape() && $W->{"browser"}->major<=4;
492 if ($W->{"heading"}) {
493 do { &{$_}() if $_; } for ($W->{"heading"});