IkiWiki/Receive.pm

   1 #!/usr/bin/perl
   2
   3 package IkiWiki::Receive;
   4
   5 use warnings;
   6 use strict;
   7 use IkiWiki;
   8
   9 sub getuser () { #{{{
  10         # CALLER_UID is set by the suid wrapper, to the original uid
  11         my $user=(getpwuid(exists $ENV{CALLER_UID} ? $ENV{CALLER_UID} : $<))[0];
  12         if (! defined $user) {
  13                 error("cannot determine username for $<");
  14         }
  15         return $user;
  16 } #}}}
  17
  18 sub trusted () { #{{{
  19         my $user=getuser();
  20         return ! ref $config{untrusted_committers} ||
  21                 ! grep { $_ eq $user } @{$config{untrusted_committers}};
  22 } #}}}
  23
  24 sub test () { #{{{
  25         exit 0 if trusted();
  26
  27         IkiWiki::lockwiki();
  28         IkiWiki::loadindex();
  29
  30         # Dummy up a cgi environment to use when calling check_canedit
  31         # and friends.
  32         eval q{use CGI};
  33         error($@) if $@;
  34         my $cgi=CGI->new;
  35         $ENV{REMOTE_ADDR}='unknown' unless exists $ENV{REMOTE_ADDR};
  36
  37         # And dummy up a session object.
  38         require IkiWiki::CGI;
  39         my $session=IkiWiki::cgi_getsession($cgi);
  40         $session->param("name", getuser());
  41         # Make sure whatever user was authed is in the
  42         # userinfo db.
  43         require IkiWiki::UserInfo;
  44         if (! IkiWiki::userinfo_get($session->param("name"), "regdate")) {
  45                 IkiWiki::userinfo_setall($session->param("name"), {
  46                         email => "",
  47                         password => "",
  48                         regdate => time,
  49                 }) || error("failed adding user");
  50         }
  51
  52         my %newfiles;
  53
  54         foreach my $change (IkiWiki::rcs_receive()) {
  55                 # This untaint is safe because we check file_pruned and
  56                 # wiki_file_regexp.
  57                 my ($file)=$change->{file}=~/$config{wiki_file_regexp}/;
  58                 $file=IkiWiki::possibly_foolish_untaint($file);
  59                 if (! defined $file || ! length $file ||
  60                     IkiWiki::file_pruned($file, $config{srcdir})) {
  61                         error(gettext("bad file name %s"), $file);
  62                 }
  63
  64                 my $type=pagetype($file);
  65                 my $page=pagename($file) if defined $type;
  66
  67                 if ($change->{action} eq 'add') {
  68                         $newfiles{$file}=1;
  69                 }
  70
  71                 if ($change->{action} eq 'change' ||
  72                     $change->{action} eq 'add') {
  73                         if (defined $page) {
  74                                 if (IkiWiki->can("check_canedit")) {
  75                                         IkiWiki::check_canedit($page, $cgi, $session);
  76                                         next;
  77                                 }
  78                         }
  79                         else {
  80                                 if (IkiWiki::Plugin::attachment->can("check_canattach")) {
  81                                         IkiWiki::Plugin::attachment::check_canattach($session, $file, $change->{path});
  82                                         next;
  83                                 }
  84                         }
  85                 }
  86                 elsif ($change->{action} eq 'remove') {
  87                         # check_canremove tests to see if the file is present
  88                         # on disk. This will fail is a single commit adds a
  89                         # file and then removes it again. Avoid the problem
  90                         # by not testing the removal in such pairs of changes.
  91                         # (The add is still tested, just to make sure that
  92                         # no data is added to the repo that a web edit
  93                         # could add.)
  94                         next if $newfiles{$file};
  95
  96                         if (IkiWiki::Plugin::remove->can("check_canremove")) {
  97                                 IkiWiki::Plugin::remove::check_canremove(defined $page ? $page : $file, $cgi, $session);
  98                                 next;
  99                         }
 100                 }
 101                 else {
 102                         error "unknown action ".$change->{action};
 103                 }
 104
 105                 error sprintf(gettext("you are not allowed to change %s"), $file);
 106         }
 107
 108         exit 0;
 109 } #}}}
 110
 111 1