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1 package Plack::App::Gruntmaster;
2
3 use 5.014000;
4 use strict;
5 our $VERSION = '5999.000_001';
6
7 use CSS::Minifier::XS;
8 use Encode qw/encode decode/;
9 use File::Slurp qw/read_file/;
10 use JavaScript::Minifier::XS;
11 use JSON::MaybeXS qw/encode_json/;
12 use PerlX::Maybe;
13 use Scope::Upper qw/unwind SUB UP/;
14 use Web::Simple;
15
16 use Gruntmaster::Data;
17 use Plack::App::Gruntmaster::HTML;
18
19 use Email::Sender::Simple qw/sendmail/;
20 use Email::Simple;
21
22 use warnings NONFATAL => 'all';
23 no warnings 'illegalproto';
24
25 ##################################################
26
27 use constant USER_REGEX => qr/^\w{2,20}$/a;
28
29 use constant CONTENT_TYPES => +{
30 c => 'text/x-csrc',
31 cpp => 'text/x-c++src',
32 cs => 'text/x-csharp', # Used by GNOME. Not in mime.types.
33 go => 'text/plain', # ?
34 hs => 'text/x-haskell',
35 java => 'text/x-java',
36 pas => 'text/x-pascal',
37 pl => 'text/x-perl',
38 py => 'text/x-python',
39 l => 'text/plain',
40 };
41
42 use constant FORMAT_EXTENSION => {
43 C => 'c',
44 CPP => 'cpp',
45 GCCGO => 'go',
46 GOLANG => 'go',
47 HASKELL => 'hs',
48 MONO => 'cs',
49 JAVA => 'java',
50 PASCAL => 'pas',
51 PERL => 'pl',
52 PYTHON => 'py',
53 SBCL => 'l',
54 };
55
56 use constant NOT_FOUND => [404, ['X-Forever' => 1, 'Content-Type' => 'text/plain'], ['Not found']];
57 use constant FORBIDDEN => [401, ['Content-Type' => 'text/plain', 'WWW-Authenticate' => 'Basic realm="Gruntmaster 6000"'], ['Forbidden']];
58
59 sub development() { ($ENV{PLACK_ENV} // 'development') eq 'development' }
60
61 my ($env, $privacy);
62
63 sub db { $env->{'gruntmaster.dbic'} }
64
65 sub remote_user {
66 my $user = $env->{'gruntmaster.user'};
67 $user &&= db->user($user);
68 $user
69 }
70
71 sub admin { remote_user && remote_user->admin }
72 sub contest { db->contest ($_{contest}) }
73 sub problem { db->problem ($_{problem}) }
74 sub job { db->job ($_{job}) }
75 sub user { db->user ($_{user}) }
76
77 sub redirect { [301, ['X-Forever' => 1, 'Location' => $_[0]], []] }
78 sub reply { [200, ['Content-Type' => 'text/plain; charset=utf-8'], \@_] }
79 sub response {
80 my ($template, $title, $params, $maxage) = @_;
81 unless ($params) {
82 $params = $title;
83 $title = 'No title';
84 }
85 $params->{time} = time;
86 $params->{args} = {%_};
87 bless {template => $template, title => $title, params => $params, maxage => ($maxage // 1)}, __PACKAGE__.'::Response'
88 }
89
90 sub forbid {
91 my ($condition) = @_;
92 $privacy = 'private' if $condition;
93 return if !$condition || admin;
94 unwind FORBIDDEN, SUB UP
95 }
96
97 sub dispatch_request{
98 $env = $_[PSGI_ENV];
99 $privacy = 'public';
100
101 sub (GET) {
102 sub (/css/:theme) {
103 my $theme = $_{theme};
104 return NOT_FOUND unless -e "css/themes/$theme.css";
105 my $css = read_file "css/themes/$theme.css";
106 $css .= read_file $_ for <css/*.css>;
107 my @headers = ('X-Forever' => 1, 'Cache-Control' => 'public, max-age=604800', 'Content-Type' => 'text/css; charset=utf-8');
108 [200, \@headers, [development ? $css : CSS::Minifier::XS::minify $css]]
109 },
110
111 sub (/js.js) {
112 my $js;
113 $js .= read_file $_ for <js/*.js>;
114 my @headers = ('X-Forever' => 1, 'Cache-Control' => 'public, max-age=604800', 'Content-Type' => 'application/javascript; charset=utf-8');
115 [200, \@headers, [development ? $js : JavaScript::Minifier::XS::minify $js]]
116 },
117
118 sub (/robots.txt) { NOT_FOUND },
119 sub (/favicon.ico) { NOT_FOUND },
120
121 sub (/src/:job) {
122 return NOT_FOUND if !job;
123 my $isowner = remote_user && remote_user->id eq job->rawowner;
124 my $private = job->private || job->problem->private || job->contest && job->contest->is_running;
125 forbid !$isowner && $private;
126 my $privacy = $private ? 'private' : 'public';
127 my @headers = ('X-Forever' => 1, 'Cache-Control' => "$privacy, max-age=604800", 'Content-Type' => CONTENT_TYPES->{job->extension});
128 push @headers, (Vary => 'Authorization') if $private;
129 [200, \@headers, [job->source]]
130 },
131
132 sub (?:contest=) {
133 return NOT_FOUND if !contest;
134 forbid contest->is_pending;
135 response_filter { return shift }
136 },
137
138 sub (?:problem=) {
139 return NOT_FOUND if !problem;
140 forbid problem->is_private;
141 response_filter { return shift }
142 },
143
144 sub (?:format~) {
145 my $format = lc ($_{format} // '');
146 response_filter {
147 my ($r) = @_;
148 return $r if ref $r ne 'Plack::App::Gruntmaster::Response';
149 my @hdrs = ('X-Forever' => 1, 'Cache-Control' => "$privacy, max-age=$r->{maxage}");
150 push @hdrs, Vary => 'Authorization' if $privacy eq 'private';
151 return [200, ['Content-Type' => 'application/json; charset=utf-8', @hdrs], [encode_json $r->{params}]] if $format eq 'json';
152 my $ret = render $r->{template}, 'en', title => $r->{title}, %{$r->{params}};
153 [200, ['Content-Type' => 'text/html; charset=utf-8', @hdrs], [encode 'UTF-8', $ret]]
154 },
155 },
156
157 sub (/st/:contest) {
158 response st => 'Standings', {
159 st => [ contest->standings ],
160 problems => [
161 map { [$_->id, $_->name] }
162 sort { $a->value <=> $b->value }
163 map { $_->problem } contest->contest_problems],
164 }, 10
165 },
166
167 sub (/ed/:contest) {
168 forbid !contest->is_finished;
169 response ed => 'Editorial of ' . contest->name, db->problem_list(contest => $_{contest}, solution => 1);
170 },
171
172 sub (/login) {
173 forbid !remote_user;
174
175 my $return = $env->{HTTP_REFERER} // '/';
176 [303, ['Set-Cookie' => "username=".remote_user->id, Location => $return], []]
177 },
178
179 sub (/ct/:contest/log/st) { redirect "/st/$_{contest}" },
180
181 sub (/us/) { response us => 'Users', {us => db->user_list} },
182 sub (/ct/ + ?:owner~) { response ct => 'Contests', db->contest_list(%_) },
183 sub (/log/ + ?:contest~&:owner~&:page~&:problem~&:private~) {
184 forbid $_{private};
185 response log => 'Job list', {%{db->job_list(%_)}, maybe contest => $_{contest},}
186 },
187 sub (/pb/ + ?:owner~&:contest~&:private~) {
188 forbid $_{private};
189 response pb => 'Problems', {%{db->problem_list(%_)}, maybe contest => $_{contest}}
190 },
191
192 sub (/us/:user) { response us_entry => user->name, db->user_entry($_{user}) },
193 sub (/ct/:contest) { response ct_entry => contest->name, db->contest_entry($_{contest}) },
194 sub (/log/:job) {
195 forbid job->private;
196 response log_entry => "Job $_{job}", db->job_entry($_{job})
197 },
198 sub (/pb/:problem + ?contest~) {
199 my (undef, undef, $contest) = @_;
200 $_{contest} = $contest;
201 return NOT_FOUND if !contest && !problem->is_in_archive || contest && !db->contest_problems->find($_{contest}, $_{problem});
202 forbid problem->is_private;
203 if (contest && contest->is_running) {
204 forbid !remote_user;
205 $privacy = 'private';
206 }
207 response pb_entry => problem->name, {%{db->problem_entry($_{problem}, $_{contest}, remote_user && remote_user->id)}, maybe contest => $_{contest}};
208 },
209 sub (/sol/:problem) {
210 forbid !problem->is_in_archive;
211 response sol => 'Solution of ' . problem->name, {solution => db->problem($_{problem})->solution};
212 },
213
214 sub (/) { redispatch_to '/index' },
215 sub (/favicon.ico) { redirect '/static/favicon.ico' },
216 sub (/:article) { [200, ['Content-Type' => 'text/html; charset=utf-8', 'Cache-Control' => 'public, max-age=60', 'X-Forever' => 1], [render_article $_{article}, 'en']] }
217 },
218
219 sub (POST) {
220 sub (/action/register + %:username=&:password=&:confirm_password=&:name=&:email=&:phone=&:town=&:university=&:country=&:level=) {
221 return reply 'Parameter too long' if grep { length > 200 } values %_;
222 return reply 'Bad username. Allowed characters are letters, digits and underscores, and the username must be between 2 and 20 characters long.' unless $_{username} =~ USER_REGEX;
223 return reply 'Username already in use' if db->user($_{username});
224 return reply 'The two passwords do not match' unless $_{password} eq $_{confirm_password};
225
226 db->users->create({id => $_{username}, name => $_{name}, email => $_{email}, phone => $_{phone}, town => $_{town}, university => $_{university}, country => $_{country}, level => $_{level}});
227 db->user($_{username})->set_passphrase($_{password});
228
229 reply 'Registered successfully';
230 },
231
232 sub (/action/passwd + %:password=&:new_password=&:confirm_new_password=) {
233 forbid !remote_user;
234 return reply 'Incorrect password' unless remote_user->check_passphrase($_{password});
235 return reply 'The two passwords do not match' unless $_{new_password} eq $_{confirm_new_password};
236 remote_user->set_passphrase($_{new_password});
237 reply 'Password changed successfully';
238 },
239
240 sub (/action/submit + %:problem=&:contest~&:prog_format=&:source_code~ + *prog~) {
241 my (undef, undef, $prog) = @_;
242 forbid !remote_user;
243 return reply 'This contest has finished' if contest && contest->is_finished;
244 return reply 'This contest has not yet started' if !admin && contest && contest->is_pending;
245 return reply 'This problem does not belong to this contest' if !contest && !problem->is_in_archive || contest && !db->contest_problems->find($_{contest}, $_{problem});
246 return reply 'Maximum source size is 10KB' if ($prog ? $prog->size : length $_{source_code}) > 10 * 1024;
247 return reply 'You must wait 30 seconds between jobs' if !admin && time <= remote_user->lastjob + 30;
248 remote_user->update({lastjob => time});
249
250 my $source = $prog ? read_file $prog->path : $_{source_code};
251 unlink $prog->path if $prog;
252 my $private = (problem->private && !$_{contest}) ? 1 : 0;
253 $private = 1 if contest && contest->is_pending;
254 my $newjob = db->jobs->create({
255 maybe contest => $_{contest},
256 private => $private,
257 date => time,
258 extension => FORMAT_EXTENSION->{$_{prog_format}},
259 format => $_{prog_format},
260 problem => $_{problem},
261 source => $source,
262 owner => remote_user->id,
263 });
264
265 [303, [Location => '/log/' . $newjob->id], []]
266 },
267
268 sub (/action/request-reset + %:username=) {
269 return reply 'Password resets are disabled' unless $ENV{GRUNTMASTER_RESET_FROM};
270 my $user = db->user($_{username});
271 return reply 'No such user' unless $user;
272 my $token = join ':', $user->make_reset_hmac;
273 my $body = <<EOF;
274 Someone has requested a password reset for your account.
275
276 To reset your password, please submit the reset password form on the
277 website using the following information:
278
279 Username: $_{username}
280 Password: <your new password>
281 Reset token: $token
282
283 The token is valid for 24 hours.
284 EOF
285 my $email = Email::Simple->create(
286 header => [
287 From => $ENV{GRUNTMASTER_RESET_FROM},
288 To => $user->email,
289 Subject => 'Password reset token',
290 ],
291 body => $body,
292 );
293
294 my $ok = 0;
295 eval {
296 sendmail $email;
297 $ok = 1;
298 };
299 return reply 'Email sent' if $ok;
300 reply "Failure sending email: $@";
301 },
302
303 sub (/action/reset + %:username=&:password=&:token=) {
304 my $user = db->user($_{username});
305 return reply 'No such user' unless $user;
306 my ($token, $exp) = split ':', $_{token};
307 return reply 'Reset token is expired' if time >= $exp;
308 return reply 'Bad reset token' unless $user->make_reset_hmac($exp) eq $token;
309 $user->set_passphrase($_{password});
310 reply 'Password reset successfully';
311 },
312 }
313 }
314
315
316 1;
317 __END__
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