晋太元中，武陵人捕鱼为业。缘溪行，忘路之远近。忽逢桃花林，夹岸数百步，中无杂树，芳草鲜美，落英缤纷。渔人甚异之，复前行，欲穷其林。 　　林尽水源，便得一山，山有小口，仿佛若有光。便舍船，从口入。初极狭，才通人。复行数十步，豁然开朗。土地平旷，屋舍俨然，有良田、美池、桑竹之属。阡陌交通，鸡犬相闻。其中往来种作，男女衣着，悉如外人。黄发垂髫，并怡然自乐。 　　见渔人，乃大惊，问所从来。具答之。便要还家，设酒杀鸡作食。村中闻有此人，咸来问讯。自云先世避秦时乱，率妻子邑人来此绝境，不复出焉，遂与外人间隔。问今是何世，乃不知有汉，无论魏晋。此人一一为具言所闻，皆叹惋。余人各复延至其家，皆出酒食。停数日，辞去。此中人语云：“不足为外人道也。”(间隔 一作：隔绝) 　　既出，得其船，便扶向路，处处志之。及郡下，诣太守，说如此。太守即遣人随其往，寻向所志，遂迷，不复得路。 　　南阳刘子骥，高尚士也，闻之，欣然规往。未果，寻病终。后遂无问津者。 .
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Directory :  /usr/share/perl5/vendor_perl/LWP/Authen/

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Current File : //usr/share/perl5/vendor_perl/LWP/Authen/Digest.pm
package LWP::Authen::Digest;

use strict;
use base 'LWP::Authen::Basic';

our $VERSION = '6.34';

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 $resp{$_};

	# RFC2617 says that qop-value and nc-value should be unquoted.
	if ( $_ eq 'qop' || $_ eq 'nc' ) {
		push(@pairs, "$_=" . $resp{$_});
	}
	else {
		push(@pairs, "$_=" . qq("$resp{$_}"));
	}
    }

    my $auth_value  = "Digest " . join(", ", @pairs);
    return $auth_value;
}

1;

haha - 2025