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package LWP::Authen::Digest;
use strict;
use base 'LWP::Authen::Basic';
require Digest::MD5;
sub auth_header {
my($class, $user, $pass, $request, $ua, $h) = @_;
my $auth_param = $h->{auth_param};
my $nc = sprintf "%08X", ++$ua->{authen_md5_nonce_count}{$auth_param->{nonce}};
my $cnonce = sprintf "%8x", time;
my $uri = $request->uri->path_query;
$uri = "/" unless length $uri;
my $md5 = Digest::MD5->new;
my(@digest);
$md5->add(join(":", $user, $auth_param->{realm}, $pass));
push(@digest, $md5->hexdigest);
$md5->reset;
push(@digest, $auth_param->{nonce});
if ($auth_param->{qop}) {
push(@digest, $nc, $cnonce, ($auth_param->{qop} =~ m|^auth[,;]auth-int$|) ? 'auth' : $auth_param->{qop});
}
$md5->add(join(":", $request->method, $uri));
push(@digest, $md5->hexdigest);
$md5->reset;
$md5->add(join(":", @digest));
my($digest) = $md5->hexdigest;
$md5->reset;
my %resp = map { $_ => $auth_param->{$_} } qw(realm nonce opaque);
@resp{qw(username uri response algorithm)} = ($user, $uri, $digest, "MD5");
if (($auth_param->{qop} || "") =~ m|^auth([,;]auth-int)?$|) {
@resp{qw(qop cnonce nc)} = ("auth", $cnonce, $nc);
}
my(@order) = qw(username realm qop algorithm uri nonce nc cnonce response);
if($request->method =~ /^(?:POST|PUT)$/) {
$md5->add($request->content);
my $content = $md5->hexdigest;
$md5->reset;
$md5->add(join(":", @digest[0..1], $content));
$md5->reset;
$resp{"message-digest"} = $md5->hexdigest;
push(@order, "message-digest");
}
push(@order, "opaque");
my @pairs;
for (@order) {
next unless defined $resp{$_};
push(@pairs, "$_=" . qq("$resp{$_}"));
}
my $auth_value = "Digest " . join(", ", @pairs);
return $auth_value;
}
1;
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