Current File : //usr/share/perl5/vendor_perl/HTTP/Config.pm
package HTTP::Config;
use strict;
use URI;
use vars qw($VERSION);
$VERSION = "6.00";
sub new {
my $class = shift;
return bless [], $class;
}
sub entries {
my $self = shift;
@$self;
}
sub empty {
my $self = shift;
not @$self;
}
sub add {
if (@_ == 2) {
my $self = shift;
push(@$self, shift);
return;
}
my($self, %spec) = @_;
push(@$self, \%spec);
return;
}
sub find2 {
my($self, %spec) = @_;
my @found;
my @rest;
ITEM:
for my $item (@$self) {
for my $k (keys %spec) {
if (!exists $item->{$k} || $spec{$k} ne $item->{$k}) {
push(@rest, $item);
next ITEM;
}
}
push(@found, $item);
}
return \@found unless wantarray;
return \@found, \@rest;
}
sub find {
my $self = shift;
my $f = $self->find2(@_);
return @$f if wantarray;
return $f->[0];
}
sub remove {
my($self, %spec) = @_;
my($removed, $rest) = $self->find2(%spec);
@$self = @$rest if @$removed;
return @$removed;
}
my %MATCH = (
m_scheme => sub {
my($v, $uri) = @_;
return $uri->_scheme eq $v; # URI known to be canonical
},
m_secure => sub {
my($v, $uri) = @_;
my $secure = $uri->can("secure") ? $uri->secure : $uri->_scheme eq "https";
return $secure == !!$v;
},
m_host_port => sub {
my($v, $uri) = @_;
return unless $uri->can("host_port");
return $uri->host_port eq $v, 7;
},
m_host => sub {
my($v, $uri) = @_;
return unless $uri->can("host");
return $uri->host eq $v, 6;
},
m_port => sub {
my($v, $uri) = @_;
return unless $uri->can("port");
return $uri->port eq $v;
},
m_domain => sub {
my($v, $uri) = @_;
return unless $uri->can("host");
my $h = $uri->host;
$h = "$h.local" unless $h =~ /\./;
$v = ".$v" unless $v =~ /^\./;
return length($v), 5 if substr($h, -length($v)) eq $v;
return 0;
},
m_path => sub {
my($v, $uri) = @_;
return unless $uri->can("path");
return $uri->path eq $v, 4;
},
m_path_prefix => sub {
my($v, $uri) = @_;
return unless $uri->can("path");
my $path = $uri->path;
my $len = length($v);
return $len, 3 if $path eq $v;
return 0 if length($path) <= $len;
$v .= "/" unless $v =~ m,/\z,,;
return $len, 3 if substr($path, 0, length($v)) eq $v;
return 0;
},
m_path_match => sub {
my($v, $uri) = @_;
return unless $uri->can("path");
return $uri->path =~ $v;
},
m_uri__ => sub {
my($v, $k, $uri) = @_;
return unless $uri->can($k);
return 1 unless defined $v;
return $uri->$k eq $v;
},
m_method => sub {
my($v, $uri, $request) = @_;
return $request && $request->method eq $v;
},
m_proxy => sub {
my($v, $uri, $request) = @_;
return $request && ($request->{proxy} || "") eq $v;
},
m_code => sub {
my($v, $uri, $request, $response) = @_;
$v =~ s/xx\z//;
return unless $response;
return length($v), 2 if substr($response->code, 0, length($v)) eq $v;
},
m_media_type => sub { # for request too??
my($v, $uri, $request, $response) = @_;
return unless $response;
return 1, 1 if $v eq "*/*";
my $ct = $response->content_type;
return 2, 1 if $v =~ s,/\*\z,, && $ct =~ m,^\Q$v\E/,;
return 3, 1 if $v eq "html" && $response->content_is_html;
return 4, 1 if $v eq "xhtml" && $response->content_is_xhtml;
return 10, 1 if $v eq $ct;
return 0;
},
m_header__ => sub {
my($v, $k, $uri, $request, $response) = @_;
return unless $request;
return 1 if $request->header($k) eq $v;
return 1 if $response && $response->header($k) eq $v;
return 0;
},
m_response_attr__ => sub {
my($v, $k, $uri, $request, $response) = @_;
return unless $response;
return 1 if !defined($v) && exists $response->{$k};
return 0 unless exists $response->{$k};
return 1 if $response->{$k} eq $v;
return 0;
},
);
sub matching {
my $self = shift;
if (@_ == 1) {
if ($_[0]->can("request")) {
unshift(@_, $_[0]->request);
unshift(@_, undef) unless defined $_[0];
}
unshift(@_, $_[0]->uri_canonical) if $_[0] && $_[0]->can("uri_canonical");
}
my($uri, $request, $response) = @_;
$uri = URI->new($uri) unless ref($uri);
my @m;
ITEM:
for my $item (@$self) {
my $order;
for my $ikey (keys %$item) {
my $mkey = $ikey;
my $k;
$k = $1 if $mkey =~ s/__(.*)/__/;
if (my $m = $MATCH{$mkey}) {
#print "$ikey $mkey\n";
my($c, $o);
my @arg = (
defined($k) ? $k : (),
$uri, $request, $response
);
my $v = $item->{$ikey};
$v = [$v] unless ref($v) eq "ARRAY";
for (@$v) {
($c, $o) = $m->($_, @arg);
#print " - $_ ==> $c $o\n";
last if $c;
}
next ITEM unless $c;
$order->[$o || 0] += $c;
}
}
$order->[7] ||= 0;
$item->{_order} = join(".", reverse map sprintf("%03d", $_ || 0), @$order);
push(@m, $item);
}
@m = sort { $b->{_order} cmp $a->{_order} } @m;
delete $_->{_order} for @m;
return @m if wantarray;
return $m[0];
}
sub add_item {
my $self = shift;
my $item = shift;
return $self->add(item => $item, @_);
}
sub remove_items {
my $self = shift;
return map $_->{item}, $self->remove(@_);
}
sub matching_items {
my $self = shift;
return map $_->{item}, $self->matching(@_);
}
1;
__END__
=head1 NAME
HTTP::Config - Configuration for request and response objects
=head1 SYNOPSIS
use HTTP::Config;
my $c = HTTP::Config->new;
$c->add(m_domain => ".example.com", m_scheme => "http", verbose => 1);
use HTTP::Request;
my $request = HTTP::Request->new(GET => "http://www.example.com");
if (my @m = $c->matching($request)) {
print "Yadayada\n" if $m[0]->{verbose};
}
=head1 DESCRIPTION
An C<HTTP::Config> object is a list of entries that
can be matched against request or request/response pairs. Its
purpose is to hold configuration data that can be looked up given a
request or response object.
Each configuration entry is a hash. Some keys specify matching to
occur against attributes of request/response objects. Other keys can
be used to hold user data.
The following methods are provided:
=over 4
=item $conf = HTTP::Config->new
Constructs a new empty C<HTTP::Config> object and returns it.
=item $conf->entries
Returns the list of entries in the configuration object.
In scalar context returns the number of entries.
=item $conf->empty
Return true if there are no entries in the configuration object.
This is just a shorthand for C<< not $conf->entries >>.
=item $conf->add( %matchspec, %other )
=item $conf->add( \%entry )
Adds a new entry to the configuration.
You can either pass separate key/value pairs or a hash reference.
=item $conf->remove( %spec )
Removes (and returns) the entries that have matches for all the key/value pairs in %spec.
If %spec is empty this will match all entries; so it will empty the configuation object.
=item $conf->matching( $uri, $request, $response )
=item $conf->matching( $uri )
=item $conf->matching( $request )
=item $conf->matching( $response )
Returns the entries that match the given $uri, $request and $response triplet.
If called with a single $request object then the $uri is obtained by calling its 'uri_canonical' method.
If called with a single $response object, then the request object is obtained by calling its 'request' method;
and then the $uri is obtained as if a single $request was provided.
The entries are returned with the most specific matches first.
In scalar context returns the most specific match or C<undef> in none match.
=item $conf->add_item( $item, %matchspec )
=item $conf->remove_items( %spec )
=item $conf->matching_items( $uri, $request, $response )
Wrappers that hides the entries themselves.
=back
=head2 Matching
The following keys on a configuration entry specify matching. For all
of these you can provide an array of values instead of a single value.
The entry matches if at least one of the values in the array matches.
Entries that require match against a response object attribute will never match
unless a response object was provided.
=over
=item m_scheme => $scheme
Matches if the URI uses the specified scheme; e.g. "http".
=item m_secure => $bool
If $bool is TRUE; matches if the URI uses a secure scheme. If $bool
is FALSE; matches if the URI does not use a secure scheme. An example
of a secure scheme is "https".
=item m_host_port => "$hostname:$port"
Matches if the URI's host_port method return the specified value.
=item m_host => $hostname
Matches if the URI's host method returns the specified value.
=item m_port => $port
Matches if the URI's port method returns the specified value.
=item m_domain => ".$domain"
Matches if the URI's host method return a value that within the given
domain. The hostname "www.example.com" will for instance match the
domain ".com".
=item m_path => $path
Matches if the URI's path method returns the specified value.
=item m_path_prefix => $path
Matches if the URI's path is the specified path or has the specified
path as prefix.
=item m_path_match => $Regexp
Matches if the regular expression matches the URI's path. Eg. qr/\.html$/.
=item m_method => $method
Matches if the request method matches the specified value. Eg. "GET" or "POST".
=item m_code => $digit
=item m_code => $status_code
Matches if the response status code matches. If a single digit is
specified; matches for all response status codes beginning with that digit.
=item m_proxy => $url
Matches if the request is to be sent to the given Proxy server.
=item m_media_type => "*/*"
=item m_media_type => "text/*"
=item m_media_type => "html"
=item m_media_type => "xhtml"
=item m_media_type => "text/html"
Matches if the response media type matches.
With a value of "html" matches if $response->content_is_html returns TRUE.
With a value of "xhtml" matches if $response->content_is_xhtml returns TRUE.
=item m_uri__I<$method> => undef
Matches if the URI object provides the method.
=item m_uri__I<$method> => $string
Matches if the URI's $method method returns the given value.
=item m_header__I<$field> => $string
Matches if either the request or the response have a header $field with the given value.
=item m_response_attr__I<$key> => undef
=item m_response_attr__I<$key> => $string
Matches if the response object has that key, or the entry has the given value.
=back
=head1 SEE ALSO
L<URI>, L<HTTP::Request>, L<HTTP::Response>
=head1 COPYRIGHT
Copyright 2008, Gisle Aas
This library is free software; you can redistribute it and/or
modify it under the same terms as Perl itself.
=cut
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