cgi/Git/RepoCGI.pm

   1 package Git::RepoCGI;
   2
   3 use strict;
   4 use warnings;
   5
   6 ### Administrativa
   7
   8 my ( $bin_path, $jail_path, $repomgr_path, $repodata_path, $repo_path );
   9 my ( $site_domain, $group_file, $user_file, $sshkeys_path );
  10 BEGIN {
  11         our $VERSION = '0.1';
  12         our @ISA = qw(Exporter);
  13         our @EXPORT = qw(genpwd scrypt html_esc jailed_file
  14                          lock_file unlock_file
  15                          filedb_atomic_append filedb_atomic_edit
  16                          proj_get_forkee_name proj_get_forkee_path
  17                          valid_proj_name valid_user_name valid_email valid_repo_url valid_web_url);
  18
  19         use CGI qw(:standard :escapeHTML -nosticky);
  20         use CGI::Util qw(unescape);
  21         use CGI::Carp qw(fatalsToBrowser);
  22         use Digest::SHA1 qw(sha1_hex);
  23         use Git::RepoCGI::Config;
  24
  25         $bin_path = $Git::RepoCGI::Config::defaults{bin_path};
  26         $jail_path = $Git::RepoCGI::Config::defaults{jail_path};
  27         $repomgr_path = $Git::RepoCGI::Config::defaults{repomgr_path};
  28         $repodata_path = $Git::RepoCGI::Config::defaults{repodata_path};
  29         $repo_path = $Git::RepoCGI::Config::defaults{repo_path};
  30
  31         $group_file = $Git::RepoCGI::Config::defaults{group_path};
  32         $user_file = $Git::RepoCGI::Config::defaults{user_file};
  33         $sshkeys_path = $Git::RepoCGI::Config::defaults{sshkeys_path};
  34
  35         $site_domain = $Git::RepoCGI::Config::defaults{site_domain};
  36
  37         $ENV{PATH} = $bin_path . ':' . $ENV{PATH};
  38 }
  39
  40
  41 ### RepoCGI object
  42
  43 sub new {
  44         my $class = shift;
  45         my ($heading) = @_;
  46         my $repo = {};
  47
  48         $repo->{cgi} = CGI->new;
  49
  50         print $repo->{cgi}->header(-type=>'text/html', -charset => 'utf-8');
  51
  52         print <<EOT;
  53 <?xml version="1.0" encoding="utf-8"?>
  54 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
  55 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
  56
  57 <head>
  58 <title>$site_domain :: $heading</title>
  59 <link rel="stylesheet" type="text/css" href="/gitweb.css"/>
  60 <link rel="shortcut icon" href="/git-favicon.png" type="image/png"/>
  61 </head>
  62
  63 <body>
  64
  65 <div class="page_header">
  66 <a href="http://git.or.cz/" title="Git homepage"><img src="/git-logo.png" width="72" height="27" alt="git" style="float:right; border-width:0px;"/></a>
  67 <a href="/">$site_domain</a> / administration / $heading
  68 </div>
  69
  70 EOT
  71
  72         bless $repo, $class;
  73 }
  74
  75 sub DESTROY {
  76         my $self = shift;
  77         my $cgi = $self->cgi;
  78         my $cginame = $cgi->url(-absolute => 1);
  79         $cginame =~ s#^/m/##;
  80         if ($cginame =~ /^[a-zA-Z0-9_.\/-]+\.cgi$/) {
  81                 print <<EOT;
  82 <div align="right">
  83 <a href="http://$site_domain/w/repo.git?a=blob;f=cgi/$cginame">(view source)</a>
  84 </div>
  85 EOT
  86         }
  87         print <<EOT;
  88 </body>
  89 </html>
  90 EOT
  91 }
  92
  93 sub cgi {
  94         my $self = shift;
  95         $self->{cgi};
  96 }
  97
  98 sub bye {
  99         my $self = shift;
 100         print "<p>", @_, "</p>\n" if @_;
 101         exit
 102 }
 103
 104 sub err {
 105         my $self = shift;
 106         print "<p style=\"color: red\">@_</p>\n";
 107         $self->{err}++;
 108 }
 109
 110 sub err_check {
 111         my $self = shift;
 112         my $err = $self->{err};
 113         $err and print "<p style=\"font-weight: bold\">Operation aborted due to $err errors.</p>\n";
 114         $err;
 115 }
 116
 117 sub sparam {
 118         my ( $self, $param ) = @_;
 119         $self->{cgi}->param($param) || '';
 120 }
 121 sub wparam {
 122         my $self = shift;
 123         my $val = $self->sparam(@_);
 124         $val =~ s/^\s*(.*?)\s*$/$1/;
 125         $val;
 126 }
 127
 128
 129 ### Random utility functions
 130
 131 sub genpwd {
 132         # FLUFFY!
 133         substr(crypt(rand, rand), 2);
 134 }
 135
 136 sub scrypt {
 137         my ($pwd) = @_;
 138         crypt($pwd, join ('', ('.', '/', 2..9, 'A'..'Z', 'a'..'z')[rand 64, rand 64]));
 139 }
 140
 141 sub html_esc {
 142         my ($str) = @_;
 143         $str =~ s/&/&amp;/g;
 144         $str =~ s/</&lt;/g; $str =~ s/>/&gt;/g;
 145         $str =~ s/"/&quot;/g;
 146         $str;
 147 }
 148
 149 sub jailed_file {
 150         my ($filename) = @_;
 151         "$jail_path/$filename";
 152 }
 153
 154 sub lock_file {
 155         my ($path) = @_;
 156
 157         $path .= '.lock';
 158
 159         use Errno qw(EEXIST);
 160         use Fcntl qw(O_WRONLY O_CREAT O_EXCL);
 161         use IO::Handle;
 162         my $handle = new IO::Handle;
 163
 164         unless (sysopen($handle, $path, O_WRONLY|O_CREAT|O_EXCL)) {
 165                 my $cnt = 0;
 166                 while (not sysopen($handle, $path, O_WRONLY|O_CREAT|O_EXCL)) {
 167                         ($! == EEXIST) or die "$path open failed: $!";
 168                         ($cnt++ < 16) or die "$path open failed: cannot open lockfile";
 169                         sleep(1);
 170                 }
 171         }
 172         # XXX: filedb-specific
 173         chmod 0664, $path or die "$path g+w failed: $!";
 174
 175         $handle;
 176 }
 177
 178 sub unlock_file {
 179         my ($path) = @_;
 180
 181         rename "$path.lock", $path or die "$path unlock failed: $!";
 182 }
 183
 184 sub filedb_atomic_append {
 185         my ($file, $line) = @_;
 186         my $id = 65536;
 187
 188         open my $src, $file or die "$file open for reading failed: $!";
 189         my $dst = lock_file($file);
 190
 191         while (<$src>) {
 192                 my $aid = (split /:/)[2];
 193                 $id = $aid + 1 if ($aid >= $id);
 194
 195                 print $dst $_ or die "$file(l) write failed: $!";
 196         }
 197
 198         $line =~ s/\\i/$id/g;
 199         print $dst "$line\n" or die "$file(l) write failed: $!";
 200
 201         close $dst or die "$file(l) close failed: $!";
 202         close $src;
 203
 204         unlock_file($file);
 205
 206         $id;
 207 }
 208
 209 sub filedb_atomic_edit {
 210         my ($file, $fn) = @_;
 211
 212         open my $src, $file or die "$file open for reading failed: $!";
 213         my $dst = lock_file($file);
 214
 215         while (<$src>) {
 216                 print $dst $fn->($_) or die "$file(l) write failed: $!";
 217         }
 218
 219         close $dst or die "$file(l) close failed: $!";
 220         close $src;
 221
 222         unlock_file($file);
 223 }
 224
 225 sub proj_get_forkee_name {
 226         $_ = $_[0];
 227         (m#^(.*)/.*?$#)[0];
 228 }
 229 sub proj_get_forkee_path {
 230         my $forkee = $repo_path . proj_get_forkee_name($_[0]).'.git';
 231         -d $forkee ? $forkee : '';
 232 }
 233 sub valid_proj_name {
 234         $_ = $_[0];
 235         (not m#/# or -d proj_get_forkee_path($_)) # will also catch ^/
 236                 and (not m#\./#)
 237                 and (not m#/$#)
 238                 and m#^[a-zA-Z0-9+./_-]+$#;
 239 }
 240 sub valid_user_name {
 241         $_ = $_[0];
 242         /^[a-zA-Z0-9+._-]+$/;
 243 }
 244 sub valid_email {
 245         $_ = $_[0];
 246         /^[a-zA-Z0-9+._-]+@[a-zA-Z0-9-.]+$/;
 247 }
 248 sub valid_web_url {
 249         $_ = $_[0];
 250         /^http:\/\/[a-zA-Z0-9-.]+(\/[_\%a-zA-Z0-9.\/~-]*)?(#[a-zA-Z0-9._-]+)?$/;
 251 }
 252 sub valid_repo_url {
 253         $_ = $_[0];
 254         /^http:\/\/[a-zA-Z0-9-.]+(\/[_\%a-zA-Z0-9.\/~-]*)?$/ or
 255          /^git:\/\/[a-zA-Z0-9-.]+(\/[_\%a-zA-Z0-9.\/~-]*)?$/;
 256 }
 257
 258 sub load_project {
 259         my ( $self, $name ) = @_;
 260
 261         $self->bye("I need the project name as an argument now.")
 262                 unless $name;
 263
 264         $self->bye("Invalid project name. Go away, sorcerer.")
 265                 unless valid_proj_name($name);
 266
 267         $self->bye("Sorry but this project does not exist. "
 268                         . "Now, how did you <em>get</em> here?!")
 269                 unless Git::RepoCGI::Project::does_exist($name);
 270
 271         $self->bye("Sorry but your project has not finished mirroring yet.  "
 272                         . "If this process takes excessive time, "
 273                         . "please inform the site administrator.")
 274                 unless Git::RepoCGI::Project::available($name);
 275
 276         my $proj = Git::RepoCGI::Project->load($name);
 277         die "not found project $name, that's really weird!" unless $proj;
 278         $proj
 279 }
 280
 281 sub load_user {
 282         my ( $self, $name ) = @_;
 283         $self->bye("User '$name' is not registered.")
 284                 unless valid_user_name($name)
 285                         && Git::RepoCGI::User::does_exist($name);
 286
 287         my $user = Git::RepoCGI::User->load($name);
 288         $self->bye("User '$name' failed to load") unless $user;
 289         return $user;
 290 }
 291
 292 ### Project object
 293
 294 package Git::RepoCGI::Project;
 295
 296 BEGIN { use Git::RepoCGI; }
 297
 298 sub _mkdir_forkees {
 299         my $self = shift;
 300         my @pelems = split('/', $self->{name});
 301         pop @pelems; # do not create dir for the project itself
 302         my $path = $self->{base_path};
 303         foreach my $pelem (@pelems) {
 304                 $path .= "/$pelem";
 305                 (-d "$path") or mkdir $path or die "mkdir $path: $!";
 306                 chmod 0775, $path; # ok if fails (dir may already exist and be owned by someone else)
 307         }
 308 }
 309
 310 our %propmap = (
 311         url => 'base_url',
 312         email => 'owner',
 313         desc => 'description',
 314         README => 'README.html',
 315         hp => 'homepage',
 316 );
 317
 318 sub _property_path {
 319         my $self = shift;
 320         my ($name) = @_;
 321         $self->{path}.'/'.$name;
 322 }
 323
 324 sub _property_fget {
 325         my $self = shift;
 326         my ($name) = @_;
 327         $propmap{$name} or die "unknown property: $name";
 328         open P, $self->_property_path($propmap{$name}) or return undef;
 329         my @value = <P>;
 330         close P;
 331         my $value = join('', @value); chomp $value;
 332         $value;
 333 }
 334
 335 sub _property_fput {
 336         my $self = shift;
 337         my ($name, $value) = @_;
 338         $propmap{$name} or die "unknown property: $name";
 339
 340         my $P = lock_file($self->_property_path($propmap{$name}));
 341         $value ne '' and print $P "$value\n";
 342         close $P;
 343         unlock_file($self->_property_path($propmap{$name}));
 344 }
 345
 346 sub _properties_load {
 347         my $self = shift;
 348         foreach my $prop (keys %propmap) {
 349                 $self->{$prop} = $self->_property_fget($prop);
 350         }
 351 }
 352
 353 sub _properties_save {
 354         my $self = shift;
 355         foreach my $prop (keys %propmap) {
 356                 $self->_property_fput($prop, $self->{$prop});
 357         }
 358 }
 359
 360 sub _nofetch_path {
 361         my $self = shift;
 362         $self->_property_path('.nofetch');
 363 }
 364
 365 sub _nofetch {
 366         my $self = shift;
 367         my ($nofetch) = @_;
 368         my $np = $self->_nofetch_path;
 369         if ($nofetch) {
 370                 open X, '>'.$np or die "nofetch failed: $!";
 371                 close X;
 372         } else {
 373                 unlink $np or die "yesfetch failed: $!";
 374         }
 375 }
 376
 377 sub _alternates_setup {
 378         my $self = shift;
 379         return unless $self->{name} =~ m#/#;
 380         my $forkee_name = proj_get_forkee_name($self->{name});
 381         my $forkee_path = proj_get_forkee_path($self->{name});
 382         return unless -d $forkee_path;
 383         mkdir $self->{path}.'/refs'; chmod 0775, $self->{path}.'/refs';
 384         mkdir $self->{path}.'/objects'; chmod 0775, $self->{path}.'/objects';
 385         mkdir $self->{path}.'/objects/info'; chmod 0775, $self->{path}.'/objects/info';
 386
 387         # We set up both alternates and http_alternates since we cannot use
 388         # relative path in alternates - that doesn't work recursively.
 389
 390         my $filename = $self->{path}.'/objects/info/alternates';
 391         open X, '>'.$filename or die "alternates failed: $!";
 392         print X "$forkee_path/objects\n";
 393         close X;
 394         chmod 0664, $filename or warn "cannot chmod $filename: $!";
 395
 396         $filename = $self->{path}.'/objects/info/http-alternates';
 397         open X, '>'.$filename or die "http-alternates failed: $!";
 398         my $upfork = $forkee_name;
 399         do { print X "/r/$upfork.git/objects\n"; } while ($upfork =~ s#/?.+?$## and $upfork);
 400         close X;
 401         chmod 0664, $filename or warn "cannot chmod $filename: $!";
 402
 403         symlink "$forkee_path/refs", $self->{path}.'/refs/forkee';
 404 }
 405
 406 sub _ctags_setup {
 407         my $self = shift;
 408         mkdir $self->{path}.'/ctags'; chmod 0775, $self->{path}.'/ctags';
 409 }
 410
 411 sub _group_add {
 412         my $self = shift;
 413         my ($xtra) = @_;
 414         $xtra .= join(',', @{$self->{users}});
 415         filedb_atomic_append(jailed_file($group_file),
 416                 join(':', $self->{name}, $self->{crypt}, '\i', $xtra));
 417 }
 418
 419 sub _group_update {
 420         my $self = shift;
 421         my $xtra = join(',', @{$self->{users}});
 422         filedb_atomic_edit(jailed_file($group_file),
 423                 sub {
 424                         $_ = $_[0];
 425                         chomp;
 426                         if ($self->{name} eq (split /:/)[0]) {
 427                                 # preserve readonly flag
 428                                 s/::([^:]*)$/:$1/ and $xtra = ":$xtra";
 429                                 return join(':', $self->{name}, $self->{crypt}, $self->{gid}, $xtra)."\n";
 430                         } else {
 431                                 return "$_\n";
 432                         }
 433                 }
 434         );
 435 }
 436
 437 sub _group_remove {
 438         my $self = shift;
 439         filedb_atomic_edit(jailed_file($group_file),
 440                 sub {
 441                         $self->{name} ne (split /:/)[0] and return $_;
 442                 }
 443         );
 444 }
 445
 446 sub _hook_path {
 447         my $self = shift;
 448         my ($name) = @_;
 449         $self->{path}.'/hooks/'.$name;
 450 }
 451
 452 sub _hook_install {
 453         my $self = shift;
 454         my ($name) = @_;
 455         open SRC, "$repomgr_path/$name-hook" or die "cannot open hook $name: $!";
 456         open DST, '>'.$self->_hook_path($name) or die "cannot open hook $name for writing: $!";
 457         while (<SRC>) { print DST $_; }
 458         close DST;
 459         close SRC;
 460         chmod 0775, $self->_hook_path($name) or die "cannot chmod hook $name: $!";
 461 }
 462
 463 sub _hooks_install {
 464         my $self = shift;
 465         foreach my $hook ('update') {
 466                 $self->_hook_install($hook);
 467         }
 468 }
 469
 470 # private constructor, do not use
 471 sub _new {
 472         my $class = shift;
 473         my ($name, $base_path, $path) = @_;
 474         valid_proj_name($name) or die "refusing to create project with invalid name ($name)!";
 475         $path ||= "$base_path/$name.git";
 476         my $proj = { name => $name, base_path => $base_path, path => $path };
 477
 478         bless $proj, $class;
 479 }
 480
 481 # public constructor #0
 482 # creates a virtual project not connected to disk image
 483 # you can conjure() it later to disk
 484 sub ghost {
 485         my $class = shift;
 486         my ($name, $mirror) = @_;
 487
 488         my $path = $mirror ? "$repodata_path/to-clone" : $repo_path;
 489         my $repo = "$path/$name";
 490         $repo .= '.git' unless $mirror;
 491
 492         my $self = $class->_new($name, $path, $repo);
 493         $self->{users} = [];
 494         $self->{mirror} = $mirror;
 495         $self;
 496 }
 497
 498 # public constructor #1
 499 sub load {
 500         my $class = shift;
 501         my ($name) = @_;
 502
 503         open F, jailed_file($group_file) or die "project load failed: $!";
 504         while (<F>) {
 505                 chomp;
 506                 @_ = split /:+/;
 507                 next unless (shift eq $name);
 508
 509                 my $self = $class->_new($name, $repo_path);
 510                 (-d $self->{path}) or die "invalid path (".$self->{path}.") for project ".$self->{name};
 511
 512                 my $ulist;
 513                 ($self->{crypt}, $self->{gid}, $ulist) = @_;
 514                 $ulist ||= '';
 515                 $self->{users} = [split /,/, $ulist];
 516                 $self->{mirror} = ! -e $self->_nofetch_path;
 517                 $self->{ccrypt} = $self->{crypt};
 518
 519                 $self->_properties_load;
 520                 return $self;
 521         }
 522         close F;
 523         undef;
 524 }
 525
 526 # $proj may not be in sane state if this returns false!
 527 sub cgi_fill {
 528         my $self = shift;
 529         my ($repo) = @_;
 530         my $cgi = $repo->cgi;
 531
 532         my $pwd = $cgi->param('pwd');
 533         if ($pwd ne '' or not $self->{crypt}) {
 534                 $self->{crypt} = scrypt($pwd);
 535         }
 536
 537         if ($cgi->param('pwd2') and $pwd ne $cgi->param('pwd2')) {
 538                 $repo->err("Our high-paid security consultants have determined that the admin passwords you have entered do not match each other.");
 539         }
 540
 541         $self->{cpwd} = $cgi->param('cpwd');
 542
 543         $self->{email} = $repo->wparam('email');
 544         valid_email($self->{email})
 545                 or $repo->err("Your email sure looks weird...?");
 546
 547         $self->{url} = $repo->wparam('url');
 548         if ($self->{url}) {
 549                 valid_repo_url($self->{url})
 550                         or $repo->err("Invalid URL. Note that only HTTP and Git protocol is supported. If the URL contains funny characters, contact me.");
 551         }
 552
 553         $self->{desc} = $repo->wparam('desc');
 554         length($self->{desc}) <= 1024
 555                 or $repo->err("<b>Short</b> description length > 1kb!");
 556
 557         $self->{README} = $repo->wparam('README');
 558         length($self->{README}) <= 8192
 559                 or $repo->err("README length > 8kb!");
 560
 561         $self->{hp} = $repo->wparam('hp');
 562         if ($self->{hp}) {
 563                 valid_web_url($self->{hp})
 564                         or $repo->err("Invalid homepage URL. Note that only HTTP protocol is supported. If the URL contains funny characters, contact me.");
 565         }
 566
 567         # FIXME: Permit only existing users
 568         $self->{users} = [grep { valid_user_name($_) } $cgi->param('user')];
 569
 570         not $repo->err_check;
 571 }
 572
 573 sub form_defaults {
 574         my $self = shift;
 575         (
 576                 name => $self->{name},
 577                 email => $self->{email},
 578                 url => $self->{url},
 579                 desc => html_esc($self->{desc}),
 580                 README => html_esc($self->{README}),
 581                 hp => $self->{hp},
 582                 users => $self->{users},
 583         );
 584 }
 585
 586 sub authenticate {
 587         my $self = shift;
 588         my ($repo) = @_;
 589
 590         $self->{ccrypt} or die "Can't authenticate against a project with no password";
 591         $self->{cpwd} or $repo->err("No password entered.");
 592         unless ($self->{ccrypt} eq crypt($self->{cpwd}, $self->{ccrypt})) {
 593                 $repo->err("Your admin password does not match!");
 594                 return 0;
 595         }
 596         return 1;
 597 }
 598
 599 sub premirror {
 600         my $self = shift;
 601
 602         $self->_mkdir_forkees;
 603         mkdir $self->{path} or die "mkdir failed: $!";
 604         chmod 0775, $self->{path} or die "chmod failed: $!";
 605         $self->_properties_save;
 606         $self->_alternates_setup;
 607         $self->_ctags_setup;
 608         $self->_group_add(':');
 609 }
 610
 611 sub conjure {
 612         my $self = shift;
 613
 614         $self->_mkdir_forkees;
 615         system('cg-admin-setuprepo', '-g', 'repo', $self->{path}) == 0
 616                 or die "cg-admin-setuprepo failed: $?";
 617         system('git', '--git-dir='.$self->{path}, 'config', 'receive.denyNonFastforwards', 'false');
 618         $self->_nofetch(1);
 619         $self->_properties_save;
 620         $self->_alternates_setup;
 621         $self->_ctags_setup;
 622         $self->_group_add;
 623         $self->_hooks_install;
 624 }
 625
 626 sub update {
 627         my $self = shift;
 628
 629         $self->_properties_save;
 630         $self->_group_update;
 631 }
 632
 633 sub update_password {
 634         my $self = shift;
 635         my ($pwd) = @_;
 636
 637         $self->{crypt} = scrypt($pwd);
 638         $self->_group_update;
 639 }
 640
 641 # You can explicitly do this just on a ghost() repository too.
 642 sub delete {
 643         my $self = shift;
 644
 645         if (-d $self->{path}) {
 646                 system('rm', '-r', $self->{path}) == 0
 647                         or die "rm -r failed: $?";
 648         }
 649         $self->_group_remove;
 650 }
 651
 652 # static method
 653 sub does_exist {
 654         my ($name) = @_;
 655         valid_proj_name($name) or die "tried to query for project with invalid name $name!";
 656         (available($name)
 657                 or -d "$repodata_path/cloning/$name"
 658                 or -d "$repodata_path/to-clone/$name");
 659 }
 660 sub available {
 661         my ($name) = @_;
 662         valid_proj_name($name) or die "tried to query for project with invalid name $name!";
 663         (-d "$repo_path/$name.git");
 664 }
 665
 666
 667 ### User object
 668
 669 package Git::RepoCGI::User;
 670
 671 BEGIN { use Git::RepoCGI; }
 672
 673 sub _passwd_text {
 674         my $self = shift;
 675         join(':', $self->{name}, $self->{crypt}, $self->{uid}, 65534, $self->{email}, '/', '/bin/git-shell')
 676 }
 677
 678 sub _user_update {
 679         my $self = shift;
 680         my $xtra = join(',', @{$self->{users}});
 681         filedb_atomic_edit(jailed_file($user_file),
 682                 sub {
 683                         $_ = $_[0];
 684                         chomp;
 685                         if ($self->{name} eq (split /:/)[0]) {
 686                                 return $self->_passwd_text . "\n";
 687                         } else {
 688                                 return "$_\n";
 689                         }
 690                 }
 691         );
 692 }
 693
 694 sub _passwd_add {
 695         my $self = shift;
 696         $self->{uid} = '\i';
 697         filedb_atomic_append(jailed_file($user_file), $self->_passwd_text);
 698 }
 699
 700 sub update_password {
 701         my $self = shift;
 702         my ($pwd) = @_;
 703
 704         $self->{crypt} = scrypt($pwd);
 705         $self->_user_update;
 706 }
 707 sub authenticate {
 708         my $self = shift;
 709         my ($repo) = @_;
 710
 711         $self->{ccrypt} or die "Can't authenticate against a user with no password";
 712         $self->{cpwd} or $repo->err("No password entered.");
 713         unless ($self->{ccrypt} eq crypt($self->{cpwd}, $self->{ccrypt})) {
 714                 $repo->err("Your admin password does not match!");
 715                 return 0;
 716         }
 717         return 1;
 718 }
 719
 720 sub _sshkey_path {
 721         my $self = shift;
 722         $sshkeys_path . '/' . $self->{name};
 723 }
 724
 725 sub _sshkey_load {
 726         my $self = shift;
 727         open F, "<".jailed_file($self->_sshkey_path) or die "sshkey load failed: $!";
 728         my @keys;
 729         my $auth;
 730         while (<F>) {
 731                 chomp;
 732                 if (/^ssh-(?:dss|rsa) /) {
 733                         push @keys, $_;
 734                 } elsif (/^# REPOAUTH ([0-9a-f]+) (\d+)/) {
 735                         my $expire = $2;
 736                         $auth = $1 unless (time >= $expire);
 737                 }
 738         }
 739         close F;
 740         my $keys = join('', @keys); chomp $keys;
 741         ($keys, $auth);
 742 }
 743
 744 sub _sshkey_save {
 745         my $self = shift;
 746         open F, ">".jailed_file($self->_sshkey_path) or die "sshkey failed: $!";
 747         if (defined($self->{auth}) && $self->{auth}) {
 748                 my $expire = time + 24 * 3600;
 749                 print F "# REPOAUTH $self->{auth} $expire\n";
 750         }
 751         print F $self->{keys}."\n";
 752         close F;
 753         chmod 0664, jailed_file($self->_sshkey_path);
 754 }
 755
 756 # private constructor, do not use
 757 sub _new {
 758         my $class = shift;
 759         my ($name) = @_;
 760         valid_user_name($name) or die "refusing to create user with invalid name ($name)!";
 761         my $proj = { name => $name };
 762
 763         bless $proj, $class;
 764 }
 765
 766 # public constructor #0
 767 # creates a virtual user not connected to disk record
 768 # you can conjure() it later to disk
 769 sub ghost {
 770         my $class = shift;
 771         my ($name) = @_;
 772         my $self = $class->_new($name);
 773         $self;
 774 }
 775
 776 # public constructor #1
 777 sub load {
 778         my $class = shift;
 779         my ($name) = @_;
 780
 781         open F, jailed_file($user_file) or die "user load failed: $!";
 782         while (<F>) {
 783                 chomp;
 784                 @_ = split /:+/;
 785                 next unless (shift eq $name);
 786
 787                 my $self = $class->_new($name);
 788
 789                 ($self->{crypt}, $self->{uid}, undef, $self->{email}) = @_;
 790                 ($self->{keys}, $self->{auth}) = $self->_sshkey_load;
 791                 $self->{ccrypt} = $self->{crypt};
 792
 793                 return $self;
 794         }
 795         close F;
 796         undef;
 797 }
 798
 799 # $user may not be in sane state if this returns false!
 800 sub cgi_fill {
 801         my $self = shift;
 802         my ($repo) = @_;
 803
 804         $self->{name} = $repo->wparam('name');
 805         valid_user_name($self->{name})
 806                 or $repo->err("Name contains invalid characters.");
 807
 808         $self->{email} = $repo->wparam('email');
 809         valid_email($self->{email})
 810                 or $repo->err("Your email sure looks weird...?");
 811
 812         my $pwd = $repo->sparam('pwd');
 813         if ($pwd ne '' or not $self->{crypt}) {
 814                 $self->{crypt} = scrypt($pwd);
 815         }
 816
 817         if ($repo->sparam('pwd2') and $pwd ne $repo->sparam('pwd2')) {
 818                 $repo->err("Our high-paid security consultants have determined that the passwords you have entered do not match each other.");
 819         }
 820
 821         $self->{cpwd} = $repo->sparam('cpwd');
 822
 823         $self->keys_fill($repo);
 824 }
 825
 826 sub keys_fill {
 827         my $self = shift;
 828         my ($repo) = @_;
 829         my $cgi = $repo->cgi;
 830
 831         $self->{keys} = $cgi->param('keys');
 832         length($self->{keys}) <= 4096
 833                 or $repo->err("The list of keys is more than 4kb. Do you really need that much?");
 834         foreach (split /\r?\n/, $self->{keys}) {
 835                 /^ssh-(?:dss|rsa) .* \S+@\S+$/ or $repo->err("Your ssh key (\"$_\") appears to have invalid format (does not start by ssh-dss|rsa or does not end with @-identifier) - maybe your browser has split a single key to multiple lines?");
 836         }
 837
 838         not $repo->err_check;
 839 }
 840
 841 sub keys_save {
 842         my $self = shift;
 843
 844         $self->_sshkey_save;
 845 }
 846
 847 sub gen_auth {
 848         my $self = shift;
 849
 850         $self->{auth} = Digest::SHA1::sha1_hex(time . $$ . rand() . $self->{keys});
 851         $self->_sshkey_save;
 852         $self->{auth};
 853 }
 854
 855 sub del_auth {
 856         my $self = shift;
 857
 858         delete $self->{auth};
 859 }
 860
 861 sub conjure {
 862         my $self = shift;
 863
 864         $self->_passwd_add;
 865         $self->_sshkey_save;
 866 }
 867
 868 # static method
 869 sub does_exist {
 870         my ($name) = @_;
 871         valid_user_name($name) or die "tried to query for user with invalid name $name!";
 872         (-e jailed_file("$sshkeys_path/$name"));
 873 }
 874 sub available {
 875         does_exist(@_);
 876 }
 877
 878
 879 1;