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1#!/usr/bin/perl -w
2use v5.14;
3no if $] >= 5.017011, warnings => 'experimental::smartmatch';
4
5use Apache2::Authen::Passphrase qw/pwcheck/;
6use Apache2::AuthzCaps qw/hascaps/;
7use Gruntmaster::Data;
8use Plack::App::Gruntmaster;
9use Plack::Builder;
10use Plack::Request;
11use Digest::SHA qw/sha256/;
12use Log::Log4perl;
13
14use constant ACCESSLOG_FORMAT => '%{X-Forwarded-For}i|%h %u "%r" %>s %b "%{Referer}i" "%{User-agent}i"';
15use constant CONTENT_SECURITY_POLICY => q,default-src 'none'; script-src 'self' www.google-analytics.com; style-src 'self'; img-src 'self' www.google-analytics.com; connect-src 'self',;
16
17$Apache2::AuthzCaps::rootdir = $Apache2::Authen::Passphrase::rootdir;
18my $word = qr,(\w+),a;
19my $number = qr,(\d+),a;
20my $db = Gruntmaster::Data->connect('dbi:Pg:');
21
22sub debug {
23 local $Log::Log4perl::caller_depth = $Log::Log4perl::caller_depth + 1;
24 $_[0]->{'psgix.logger'}->({qw/level debug message/ => $_[1]})
25}
26
27sub some_auth_required {
28 my $r = Plack::Request->new($_[0]);
29 return 1 if $_[0]->{'gruntmaster.reqadmin'} || $r->path eq '/action/passwd' || $r->path eq '/submit';
30 return 1 if $r->path =~ m,^/ct/$word/pb/$word, && time < $db->contest($1)->stop;
31 ''
32}
33
34sub is_problem_private {
35 my $pb = $_[0];
36 return 1 if $db->problem($pb)->private;
37 my $prv = 0;
38 for my $cp ($db->problem($pb)->contest_problems) {
39 $prv = 1;
40 return '' if $cp->contest->start <= time;
41 }
42
43 $prv
44}
45
46sub is_problem_in_contest {
47 my ($pb, $ct) = @_;
48 return 1 if $db->contest_problems->find($ct, $pb);
49 return '' if defined $ct;
50 for my $cp ($db->problem($pb)->contest_problems) {
51 return 1 if $cp->contest->stop >= time;
52 }
53 ''
54}
55
56sub admin_required {
57 local $_ = $_[0];
58 my $env = $_[1];
59 return $db->contest($env->{'gruntmaster.contest'})->owner->id if $env->{'gruntmaster.contest'} && $db->contest($env->{'gruntmaster.contest'})->start > time;
60 return $db->problem($1)->owner->id if m,^/pb/$word, && is_problem_private $1 || $env->{'gruntmaster.problem'} && is_problem_private $env->{'gruntmaster.problem'} || !is_problem_in_contest $1, $env->{'gruntmaster.contest'};
61 return $db->job ($1)->owner->id if m,^/log/(?:src/)?$number, && ($db->job($1)->private || is_problem_private $db->job($1)->problem->id || $db->job($1)->contest && $db->job($1)->contest->stop > time);
62 ''
63}
64
65sub require_admin {
66 my $app = $_[0];
67 sub {
68 local *__ANON__ = "require_admin_middleware";
69 my $env = $_[0];
70 my $r = Plack::Request->new($env);
71 $env->{'gruntmaster.reqadmin'} = admin_required $r->path, $env;
72 $app->($env)
73 }
74}
75
76sub mangle_request {
77 my $app = $_[0];
78 sub {
79 local *__ANON__ = 'mangle_request_middleware';
80 my $env = $_[0];
81 my ($number, $word) = (qr,(\d+),a, qr,(\w+),a);
82 for ($env->{PATH_INFO}) {
83 $env->{'gruntmaster.page'} = $1 if s,/page/$number$,/,;
84 $env->{'gruntmaster.contest'} = $1 if s,^/ct/$word/,/,;
85 $env->{'gruntmaster.problem'} = $1 if s,^/pb/$word/,/,;
86 $env->{'gruntmaster.user'} = $1 if s,^/us/$word/,/,;
87 $env->{'gruntmaster.page'} //= -1 if m,^/log/$,;
88 }
89 $app->($env);
90 }
91}
92
93my %authen_cache;
94
95sub authenticate {
96 my ($user, $pass, $env) = @_;
97 my $cache_key = sha256 "$user:$pass";
98 my $time = $authen_cache{$cache_key} // 0;
99 if ($time >= time - 300) {
100 return 1;
101 } else {
102 delete $authen_cache{$cache_key};
103 }
104
105 return unless eval {
106 pwcheck $user, $pass;
107 1
108 };
109 $authen_cache{$cache_key} = time;
110
111 return if $env->{'gruntmaster.reqadmin'} && $env->{'gruntmaster.reqadmin'} ne $user && !hascaps $user, 'gmadm';
112 1
113}
114
115Log::Log4perl->init('log.conf');
116my $access_logger = Log::Log4perl->get_logger('access');
117$ENV{DBIC_NULLABLE_KEY_NOWARN} = 1;
118
119builder {
120 enable_if { $_[0]->{PATH_INFO} eq '/ok' } sub { sub{ [200, [], []] }};
121 enable 'AccessLog', format => ACCESSLOG_FORMAT, logger => sub { $access_logger->info(@_) };
122 enable 'ContentLength';
123 enable Header => set => ['Content-Security-Policy', CONTENT_SECURITY_POLICY];
124 enable_if { $_[0]->{PATH_INFO} =~ qr,^/static/,} Header => set => ['Cache-Control', 'public, max-age=604800'];
125 enable 'Static', path => qr,^/static/,;
126 enable 'Log4perl', category => 'plack';
127 enable \&mangle_request;
128 enable \&require_admin;
129 enable_if \&some_auth_required, 'Auth::Basic', authenticator => \&authenticate, realm => 'Gruntmaster 6000';
130 enable sub { my $app = $_[0]; sub { $_[0]->{'gruntmaster.dbic'} = $db; $app->($_[0]) } };
131 Plack::App::Gruntmaster->to_app
132}
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