Philip Mak wrote:
>
> Is it practical/efficient for Apache::ASP to automatically scan <A HREF>
> tags?
>
> I had an idea about an automatic URL Encoding option. The idea is that
> someone types "PerlSetVar URLEncode 1" in their httpd.conf. Then,
> Apache::ASP will automatically call $Server->URLEncode() on every <A HREF>
> tag.
>
> Applications that generate a lot of GET URLs would benefit from this, e.g.
> instead of:
>
> <a
>href="program.asp?param1=<%=$Server->URLEncode($param1)%>&param2=<%=$Server->URLEncode($param2)">
>
Runtime parsing of content for something like this is very expensive.
For an example of how expensive, run a benchmark against an ASP
page with SessionQueryParse turned on with sessions active, which
splices session-id into URLs ( not just <a href=...> type too )
If this is a generally useful feature ( anyone else ? ) it may
make sense to offer it as a config option as you suggest, and
just do some runtime parsing, but I might otherwise recommend
using XMLSubs for this. Is there any precedent with other web
application platforms for this kind of functionality?
Here's an example of how one might do this with XMLSubs
PerlSetVar XMLSubsMatch a
in global.asa:
sub a { # something like this, untested
my($args, $text) = @_;
if(my $href = $args->{href}) {
if($href =~ /\?/) {
my($head,$tail) = split(/\?/, $href);
my(@params) = split(/\&/, $tail);
my @new_params;
for my $param ( @params ) {
$param =~ s/\=(.*)/'='.$Server->URLEncode($1)/;
push(@new_params, $param);
}
$args->{href} = $head."?".join('&', @new_params);
}
}
print "<a ".join(' ', map { "$_=$args->{$_}" } keys %$args).">$text</a>";
}
-- Josh
_________________________________________________________________
Joshua Chamas Chamas Enterprises Inc.
NodeWorks <- Web Link Checking Huntington Beach, CA USA
http://www.nodeworks.com 1-714-625-4051
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