Implemented &My::Web::no_cache with $W->{"no_cache"}.
[MyWeb.git] / Web.pm
diff --git a/Web.pm b/Web.pm
index e41a314..2dd7747 100644 (file)
--- a/Web.pm
+++ b/Web.pm
@@ -27,11 +27,13 @@ use Exporter;
 sub Wrequire ($);
 sub Wuse ($@);
 our $W;
-our @EXPORT=qw(&Wrequire &Wuse &a_href &a_href_cz &vskip &img &centerimg &rightimg $W &top_dir &top_dir_disk);
+our @EXPORT=qw(&Wrequire &Wuse &a_href &a_href_cz &vskip &img &centerimg &rightimg $W &top_dir &top_dir_disk &Wprint);
 our @ISA=qw(Exporter);
 
 BEGIN
 {
+       $W->{"__My::Web_init"}=1;
+
        sub Wrequire ($)
        {
        my($file)=@_;
@@ -42,7 +44,9 @@ BEGIN
                my $class=$file;
                $file=~s#::#/#g;
                $file.=".pm";
-               my $aref=($W->{"packages_used"}{$Apache::Registry::curstash}||=[]);
+               my $who=$W->{"__PACKAGE__"};
+               $who||="__My::Web" if $W->{"__My::Web_init"};
+               my $aref=($W->{"packages_used"}{$who}||=[]);
                push @$aref,$class
                                if !{ map(($_=>1),@$aref) }->{$class};  # Prevent duplicated entries.
                CORE::require $file;
@@ -69,13 +73,9 @@ use Carp qw(cluck confess);
 use URI::Escape;
 require HTTP::BrowserDetect;
 require HTTP::Negotiate;
-require Geo::IP;
-require CGI;
-
-
-# Undo 'www/engine/httpd-restart' as it may use obsolete Perl for 'mod_perl'
-delete $ENV{"PERLLIB"};
-delete $ENV{"LD_LIBRARY_PATH"};
+my $have_Geo_IP; BEGIN { $have_Geo_IP=eval { require Geo::IP; 1; }; }
+use ModPerl::Util qw(exit);
+use POSIX qw(strftime);
 
 
 #our $W;
@@ -83,23 +83,27 @@ delete $ENV{"LD_LIBRARY_PATH"};
                # $W->{"head"}
                # $W->{"head_css"}
                # $W->{"force_charset"}
-               # %{$W->{"packages_used"}
                # $W->{"heading_done"}
                # $W->{"footer_passed"}
                # %{$W->{"headers"}}
                # %{$W->{"headers_lc"}} # maps lc($headers_key)=>$headers_key
-               # @{$W->{"packages_used"}{$Apache::Registry::curstash}}}
+               # @{$W->{"packages_used"}{$W->{"__PACKAGE__"}}}
+               # @{$W->{"packages_used"}{"__My::Web"}}
                # %{$W->{"args"}}
 
 sub init ($%)
 {
 my($class,%args)=@_;
 
+       print STDERR "$class->init ".Apache->request()->unparsed_uri()."\n";
+
        my $packages_used_save=$W->{"packages_used"};
        $W={ %WebConfig,%args };        # override %WebConfig settings
        $W->{"packages_used"}=$packages_used_save;
 
-       $W->{"__PACKAGE__"}||="Apache::ROOT".$Apache::Registry::curstash;
+       # {"__PACKAGE__"} is mandatory for mod_perl-2.0;
+       # $Apache::Registry::curstash is no longer supported.
+       do { cluck "No $_" if !$W->{$_}; } for "__PACKAGE__";
 
        $W->{"top_dir"}||=eval '$'.$W->{"__PACKAGE__"}.'::top_dir';
 
@@ -140,23 +144,22 @@ my($class,%args)=@_;
                }
        $W->{"QUERY_STRING"}=~s/([&])amp;/$1/g;
        $W->{"r"}->args($W->{"QUERY_STRING"});
-       $ENV{"QUERY_STRING"}=$W->{"QUERY_STRING"};
        # Do not: $W->{"r"}->args()
        # as it parses only QUERY_STRING (not POST data).
-       $W->{"args"}={ CGI->new()->Vars() };
+       $W->{"args"}={ CGI->new($W->{"r"})->Vars() };
        for (keys(%{$W->{"args"}})) {
                my @vals=split /\x00/,$W->{"args"}{$_};
                next if @vals<=1;
                $W->{"args"}{$_}=[@vals];
                }
 
-       do { $W->{$_}=$ENV{"HTTP_ACCEPT"} if !defined $W->{$_}; } for ("accept");
-       do { $W->{$_}=$ENV{"HTTP_USER_AGENT"} if !defined $W->{$_}; } for ("user_agent");
+       do { $W->{$_}=$W->{"r"}->headers_in()->{"Accept"}     if !defined $W->{$_}; } for ("accept");
+       do { $W->{$_}=$W->{"r"}->headers_in()->{"User-Agent"} if !defined $W->{$_}; } for ("user_agent");
 
        $W->{"browser"}=HTTP::BrowserDetect->new($W->{"user_agent"});
 
        if (!defined $W->{"have_style"}) {
-               $W->{"have_style"}=(!$W->{"browser"}->netscape() || $W->{"browser"}->major>4 ? 1 : 0);
+               $W->{"have_style"}=(!$W->{"browser"}->netscape() || ($W->{"browser"}->major() && $W->{"browser"}->major()>4) ? 1 : 0);
                }
 
        $W->{"have_js"}=($W->{"args"}{"have_js"} ? 1 : 0);
@@ -166,9 +169,18 @@ my($class,%args)=@_;
 
        do { args_check(%$_) if $_; } for ($W->{"args_check"});
 
+       $ENV{"HOSTNAME"}||=&{$W->{"web_hostname_sub"}}();
+
        return $W;
 }
 
+sub Wprint($)
+{
+my($text)=@_;
+
+       $W->{"r"}->print($text);
+}
+
 sub top_dir_disk ()
 {
        do { return $_ if $_; } for ($W->{"top_dir"});
@@ -179,7 +191,20 @@ sub top_dir (;$)
 {
 my($in)=@_;
 
-       if (my $uri=$ENV{"REQUEST_URI"}) {
+       if (my $uri=$W->{"r"}->unparsed_uri()) {
+               if ($W->{"args"}{"Wabs"}) {
+                       # FIXME: $in may not be defined here!
+                       # to prevent: Use of uninitialized value in ...
+                       if ($in=~m#^/#) {
+                               $in=~s#^/*##;
+                               }
+                       else {
+                               $in=$uri."/".$in;
+                               $in=~tr#/#/#s;
+                               1 while $in=~s#/(?:[^/]+)/\Q..\E/#/#g
+                               }
+                       return "http://".&{$W->{"web_hostname_sub"}}()."/".(defined $in ? $in : "");
+                       }
                $uri.="Index" if $uri=~m#/$#;
                if (defined $in) {
                        my($inpath,$inquery)=split /[?]/,$in,2;
@@ -216,7 +241,7 @@ my(%tmpl)=@_;
                $W->{"args"}{$name}=[ $W->{"args"}{$name} ] if !ref $W->{"args"}{$name} && ref $regex;
                fatal "$name_html passed as multivar although singlevar expected"
                                if ref $W->{"args"}{$name} && !ref $regex;
-               $regex=${$regex}[0] if ref $regex;
+               $regex=$regex->[0] if ref $regex;
                for my $val (!ref $W->{"args"}{$name} ? $W->{"args"}{$name} : @{$W->{"args"}{$name}}) {
                        $val="" if !defined $val;
                        fatal "$name_html <span class=\"quote\">".CGI::escapeHTML($val)."</span>"
@@ -241,7 +266,7 @@ my($msg)=@_;
 
        $W->{"indexme"}=0;      # For the case no heading was sent yet.
        My::Web->heading();
-       print "\n".vskip("3ex")."<hr /><h1 class=\"error\">FATAL ERROR: $msg!</h1>\n"
+       Wprint "\n".vskip("3ex")."<hr /><h1 class=\"error\">FATAL ERROR: $msg!</h1>\n"
                        ."<p>You can report this problem's details to"
                        ." ".a_href("mailto:".$W->{"admin_mail"},"admin of this website").".</p>\n";
        footer();
@@ -251,31 +276,39 @@ sub footer (;$)
 {
        exit 1 if $W->{"footer_passed"}++;      # deadlock prevention:
 
-       print vskip if $W->{"footer_delimit"};
+       Wprint vskip if $W->{"footer_delimit"};
 
        if ($W->{"heading"}) {
                do { &{$_}() if $_; } for ($W->{"footing_delimit"});
                }
 
-       print "<hr />\n" if $W->{"footer"};
+       Wprint "<hr />\n" if $W->{"footer"};
 
        if ($W->{"footer_mailme"}) {
-               print '<form action="'.top_dir('/SendMsg.pl').'" method="post" onsubmit="'
+               Wprint '<form action="'.top_dir('/SendMsg.pl').'" method="post" onsubmit="'
                                ."this.elements['msgscript'].value=this.elements['msghtml'].value;"
                                ."this.elements['msghtml'].value='';"
                                ."this.submit();"
                                .'">'."\n";
-                       print '<p align="right">'."\n";
-                               print '<input name="msgscript" type="hidden" />'."\n";
-                               print '<input name="msghtml" type="text" size="32" alt="Message" />'."\n";
-                               print '<input name="submit" type="submit" value="Quick Note" />'."\n";
-                       print '</p>'."\n";
-               print '</form>'."\n";
+                       Wprint '<p align="right">'."\n";
+                               Wprint '<input name="msgscript" type="hidden" />'."\n";
+                               Wprint '<input name="msghtml" type="text" size="32" alt="Message" />'."\n";
+                               Wprint '<input name="submit" type="submit" value="Quick Note" />'."\n";
+                       Wprint '</p>'."\n";
+               Wprint '</form>'."\n";
                }
 
+       my @packages_used=(
+                       $W->{"__PACKAGE__"},
+                       __PACKAGE__,
+                       @{$W->{"packages_used"}{"__My::Web"}},
+                       map((!$_ ? () : @$_),$W->{"packages_used"}{$W->{"__PACKAGE__"}}),
+                       );
+       my %packages_used;
+       @packages_used=grep((!$packages_used{$_}++),@packages_used);
        if ($W->{"footer_ids"}) {
-               print '<p class="cvs-id">';
-               print join("<br />\n",map({ my $package=$_;
+               Wprint '<p class="cvs-id">';
+               Wprint join("<br />\n",map({ my $package=$_;
                        my $cvs_id=(eval('$'.$package."::CVS_ID")
 #                                      || $package     # debug
                                        );
@@ -289,10 +322,13 @@ sub footer (;$)
                                        my $file=$package;
                                        $file=~s#::#/#g;
                                        my $ext;
+                                       my @tried;
                                        for (qw(.html.pl .pl .pm),"") {
                                                $ext=$_;
-                                               last if -r top_dir_disk()."/$file$ext";
-                                               cluck "Class file $file not found" if !$ext;
+                                               my $pathname=top_dir_disk()."/$file$ext";
+                                               push @tried,$pathname;
+                                               last if -r $pathname;
+                                               cluck "Class file $file not found; tried: ".join(" ",@tried) if !$ext;
                                                }
                                        $file.=$ext;
                                        $cvs_id_split[2]=""
@@ -304,30 +340,22 @@ sub footer (;$)
                                        }
                                join " ",@cvs_id_split;
                                }
-                       } (
-                                       $W->{"__PACKAGE__"},
-                                       __PACKAGE__,
-                                       @{$W->{"packages_used"}{$Apache::Registry::curstash}},
-                                       )));
-               print "</p>\n";
+                       } @packages_used));
+               Wprint "</p>\n";
                }
 
-       for my $package (
-                       $W->{"__PACKAGE__"},
-                       __PACKAGE__,
-                       @{$W->{"packages_used"}{$Apache::Registry::curstash}},
-                       ) {
+       for my $package (@packages_used) {
                my $cvs_id=(eval('$'.$package."::CVS_ID")
 #                              || $package     # debug
                                );
-               print '<!-- '.$package.' - $'.$cvs_id.'$ -->'."\n" if $cvs_id;
+               Wprint '<!-- '.$package.' - $'.$cvs_id.'$ -->'."\n" if $cvs_id;
                }
 
        if ($W->{"heading"}) {
                do { &{$_}() if $_; } for ($W->{"footing"});
                }
 
-       print "</body></html>\n";
+       Wprint "</body></html>\n";
        exit(0);
 }
 
@@ -371,7 +399,11 @@ sub a_href ($;$%)
 my($url,$contents,%args)=@_;
 
        do { $$_=1 if !defined $$_; } for (\$args{"size"});
-       $contents=CGI::escapeHTML($url) if !defined $contents;
+       if (!defined $contents) {
+               $contents=$url;
+               $contents=File::Basename::basename($contents) if $args{"basename"};
+               $contents=CGI::escapeHTML($contents);
+               }
        $contents=~s#<a\b[^>]*>##gi;
        $contents=~s#</a>##gi;
 
@@ -392,7 +424,7 @@ my($url,$contents,%args)=@_;
        $r.='"';
        do { $r.=" $_" if $_; } for ($args{"attr"});
        $r.='>'.$contents.'</a>';
-       if ($args{"size"} && url_is_local($url) && $url=~/[.](?:gz|Z|rpm|zip|deb|lha)/) {       # Downloadable?
+       if ($args{"size"} && url_is_local($url) && ($args{"size"}>=2 || $url=~/[.](?:gz|Z|rpm|zip|deb|lha)/)) { # Downloadable?
                $url=top_dir_disk().$url if $url=~m#^/#;
                if (!-r $url)
                        { cluck "File not readable: $url"; }
@@ -410,13 +442,14 @@ sub remote_ip ()
        # As 'Apache::ForwardedFor' takes the first of $ENV{"HTTP_X_FORWARDED_FOR"}
        # while the contents is '127.0.0.1, 213.220.195.171' if client has its own proxy.
        # We must take the last item ourselves.
-       my $r=$ENV{"HTTP_X_FORWARDED_FOR"} || $W->{"r"}->get_remote_host();
+       my $r=$W->{"r"}->headers_in()->{"X-Forwarded-For"} || $W->{"r"}->get_remote_host();
        $r=~s/^.*,\s*//;
        return $r;
 }
 
 sub is_cz ()
 {
+       return 0 if !$have_Geo_IP;
        return "CZ" eq Geo::IP->new()->country_code_by_addr(remote_ip());
 }
 
@@ -575,6 +608,16 @@ my(@arr)=@_;
        return @r;
 }
 
+sub no_cache($)
+{
+my($self)=@_;
+
+       header("Expires"=>"Mon, 26 Jul 1997 05:00:00 GMT");     # date in the past
+       header("Last-Modified"=>strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime()));        # always modified
+       header("Cache-Control"=>"no-cache, must-revalidate");   # HTTP/1.1
+       header("Pragma"=>"no-cache");   # HTTP/1.0
+}
+
 sub heading ()
 {
 my($class)=@_;
@@ -585,6 +628,7 @@ my($class)=@_;
        my $client_charset=$W->{"force_charset"} || "us-ascii";
        header("Content-Style-Type"=>"text/css");
        header("Content-Script-Type"=>"text/javascript");
+       $class->no_cache() if $W->{"no_cache"};
 
        while (my($key,$val)=each(%{$W->{"headers"}})) {
                $W->{"r"}->header_out($key,$val);
@@ -595,17 +639,17 @@ my($class)=@_;
        exit if $W->{"r"}->header_only();
 
        if (1) { # || !$msie_major || $msie_major>=4) # TODO:dyn
-               print '<?xml version="1.0" encoding="'.$client_charset.'"?>'."\n";
+               Wprint '<?xml version="1.0" encoding="'.$client_charset.'"?>'."\n";
                }
-       print '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">'."\n";
-       print '<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US">'."\n";
+       Wprint '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">'."\n";
+       Wprint '<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US">'."\n";
        my $title=$W->{"title_prefix"}.join("",map({ ': '.$_; } ($W->{"title"} || ())));
        $title=~s#<[^>]*>##g;
-       print "<head>";
-       print "<title>$title</title>\n";
+       Wprint "<head>";
+       Wprint "<title>$title</title>\n";
 
        if ($W->{"have_css"}) {
-               print <<'HERE';
+               Wprint <<'HERE';
 <style type="text/css"><!--
 .cvs-id   { font-family: monospace; }
 .error    { color: red;   background-color: transparent; }
@@ -613,6 +657,8 @@ my($class)=@_;
 .nowrap   { white-space: nowrap; }
 .centered { text-align: center; }
 .tab-bold { font-weight: bold; }
+.tab-head { font-weight: bold; }
+/*
 .tab-head { font-weight: bold; color: yellow; background-color: transparent; }
 body {
                background-color: black;
@@ -621,27 +667,33 @@ body {
 :link    { color: aqua;   background-color: transparent; }
 :visited { color: teal;   background-color: transparent; }
 h1,h2    { color: yellow; background-color: transparent; }
+*/
 td       { padding: 2px; }
 caption  { caption-side: bottom; }
 .footer img { vertical-align: middle; }
 HERE
-               print $W->{"head_css"}."\n";
-               print "--></style>\n";
+               Wprint $W->{"head_css"}."\n";
+               Wprint "--></style>\n";
                }
 
-       print '<meta name="robots" content="'.($W->{"indexme"} ? "" : "no" ).'index,follow" />'."\n";
-       print $W->{"head"};
+       Wprint '<meta name="robots" content="'.($W->{"indexme"} ? "" : "no" ).'index,follow" />'."\n";
+       Wprint $W->{"head"};
        for my $type (qw(prev next index contents start up)) {
-               do { print '<link rel="'.$type.'" href="'.$_.'" />'."\n" if $_; } for ($W->{"rel_$type"});
+               do { Wprint '<link rel="'.$type.'" href="'.$_.'" />'."\n" if $_; } for ($W->{"rel_$type"});
                }
-       print "</head><body";
-       print ' bgcolor="black" text="white" link="aqua" vlink="teal"'
-                       if $W->{"browser"}->netscape() && $W->{"browser"}->major<=4;
-       print ">\n";
+       Wprint "</head><body";
+#      Wprint ' bgcolor="black" text="white" link="aqua" vlink="teal"'
+#                      if $W->{"browser"}->netscape() && (!$W->{"browser"}->major() || $W->{"browser"}->major()<=4);
+       do { &{$_}($W) if $_; } for $W->{"body_attr_sub"};
+       Wprint ">\n";
 
        if ($W->{"heading"}) {
                do { &{$_}() if $_; } for ($W->{"heading"});
                }
 }
 
+BEGIN {
+       delete $W->{"__My::Web_init"};
+       }
+
 1;