git.oblomov.eu Git - ikiwiki/blob - IkiWiki/Plugin/attachment.pm

   1 #!/usr/bin/perl
   2 package IkiWiki::Plugin::attachment;
   3
   4 use warnings;
   5 use strict;
   6 use IkiWiki 2.00;
   7
   8 # TODO move to admin prefs
   9 $config{valid_attachments}="(*.mp3 and maxsize(15mb)) or (!ispage() and maxsize(50kb))";
  10
  11 sub import { #{{{
  12         hook(type => "checkconfig", id => "attachment", call => \&checkconfig);
  13         hook(type => "formbuilder_setup", id => "attachment", call => \&formbuilder_setup);
  14         hook(type => "formbuilder", id => "attachment", call => \&formbuilder);
  15 } # }}}
  16
  17 sub checkconfig () { #{{{
  18         $config{cgi_disable_uploads}=0;
  19 } #}}}
  20
  21 sub formbuilder_setup (@) { #{{{
  22         my %params=@_;
  23         my $form=$params{form};
  24
  25         return if $form->field("do") ne "edit";
  26
  27         $form->field(name => 'attachment', type => 'file');
  28 } #}}}
  29
  30 sub formbuilder (@) { #{{{
  31         my %params=@_;
  32         my $form=$params{form};
  33
  34         return if $form->field("do") ne "edit";
  35
  36         if ($form->submitted eq "Upload") {
  37                 my $q=$params{cgi};
  38                 my $filename=$q->param('attachment');
  39                 if (! defined $filename || ! length $filename) {
  40                         # no file, so do nothing
  41                         return;
  42                 }
  43
  44                 # This is an (apparently undocumented) way to get the name
  45                 # of the temp file that CGI writes the upload to.
  46                 my $tempfile=$q->tmpFileName($filename);
  47
  48                 # Put the attachment in a subdir of the page it's attached
  49                 # to, unless that page is an "index" page.
  50                 my $page=$form->field('page');
  51                 $page=~s/(^|\/)index//;
  52                 $filename=$page."/".IkiWiki::basename($filename);
  53
  54                 # To untaint the filename, escape any hazardous characters,
  55                 # and make sure it isn't pruned.
  56                 $filename=IkiWiki::titlepage(IkiWiki::possibly_foolish_untaint($filename));
  57                 if (IkiWiki::file_pruned($filename, $config{srcdir})) {
  58                         error(gettext("bad attachment filename"));
  59                 }
  60
  61                 # Check that the user is allowed to edit a page with the
  62                 # name of the attachment.
  63                 IkiWiki::check_canedit($filename, $q, $params{session}, 1);
  64
  65                 # Use a pagespec to test that the attachment is valid.
  66                 if (exists $config{valid_attachments} &&
  67                     length $config{valid_attachments}) {
  68                         my $result=pagespec_match($filename, $config{valid_attachments},
  69                                 file => $tempfile);
  70                         if (! $result) {
  71                                 error(gettext("attachment rejected")." ($result)");
  72                         }
  73                 }
  74
  75                 # Move the attachment into place.
  76                 # Try to use a fast rename; fall back to copying.
  77                 IkiWiki::prep_writefile($filename, $config{srcdir});
  78                 unlink($config{srcdir}."/".$filename);
  79                 if (! rename($tempfile, $config{srcdir}."/".$filename)) {
  80                         my $fh=$q->upload('attachment');
  81                         if (! defined $fh || ! ref $fh) {
  82                                 error("failed to get filehandle");
  83                         }
  84                         binmode($fh);
  85                         writefile($filename, $config{srcdir}, undef, 1, sub {
  86                                 IkiWiki::fast_file_copy($tempfile, $filename, $fh, @_);
  87                         });
  88                 }
  89
  90                 # TODO add to vcs
  91
  92                 # TODO trigger a wiki build if there's no vcs
  93         }
  94 } # }}}
  95
  96 package IkiWiki::PageSpec;
  97
  98 sub parsesize { #{{{
  99         my $size=shift;
 100         no warnings;
 101         my $base=$size+0; # force to number
 102         use warnings;
 103         my $multiple=1;
 104         if ($size=~/kb?$/i) {
 105                 $multiple=2**10;
 106         }
 107         elsif ($size=~/mb?$/i) {
 108                 $multiple=2**20;
 109         }
 110         elsif ($size=~/gb?$/i) {
 111                 $multiple=2**30;
 112         }
 113         elsif ($size=~/tb?$/i) {
 114                 $multiple=2**40;
 115         }
 116         return $base * $multiple;
 117 } #}}}
 118
 119 sub match_maxsize ($$;@) { #{{{
 120         shift;
 121         my $maxsize=eval{parsesize(shift)};
 122         if ($@) {
 123                 return IkiWiki::FailReason->new("unable to parse maxsize (or number too large)");
 124         }
 125
 126         my %params=@_;
 127         if (! exists $params{file}) {
 128                 return IkiWiki::FailReason->new("no file specified");
 129         }
 130
 131         if (-s $params{file} > $maxsize) {
 132                 return IkiWiki::FailReason->new("file too large");
 133         }
 134         else {
 135                 return IkiWiki::SuccessReason->new("file not too large");
 136         }
 137 } #}}}
 138
 139 sub match_minsize ($$;@) { #{{{
 140         shift;
 141         my $minsize=eval{parsesize(shift)};
 142         if ($@) {
 143                 return IkiWiki::FailReason->new("unable to parse minsize (or number too large)");
 144         }
 145
 146         my %params=@_;
 147         if (! exists $params{file}) {
 148                 return IkiWiki::FailReason->new("no file specified");
 149         }
 150
 151         if (-s $params{file} < $minsize) {
 152                 return IkiWiki::FailReason->new("file too small");
 153         }
 154         else {
 155                 return IkiWiki::SuccessReason->new("file not too small");
 156         }
 157 } #}}}
 158
 159 sub match_ispage ($$;@) { #{{{
 160         my $filename=shift;
 161
 162         if (defined IkiWiki::pagetype($filename)) {
 163                 return IkiWiki::SuccessReason->new("file is a wiki page");
 164         }
 165         else {
 166                 return IkiWiki::FailReason->new("file is not a wiki page");
 167         }
 168 } #}}}
 169
 170 1