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