rename: pass the CGI and session to the rename hook

[git.ikiwiki.info.git] / IkiWiki / Plugin / attachment.pm

diff --git a/IkiWiki/Plugin/attachment.pm b/IkiWiki/Plugin/attachment.pm
index 48a1c58b4776851a3492cb42c25d43a78f86b92f..087c315a9af355569921c9150c05c0ba89ec8df1 100644 (file)
--- a/IkiWiki/Plugin/attachment.pm
+++ b/IkiWiki/Plugin/attachment.pm
@@ -3,134 +3,240 @@ package IkiWiki::Plugin::attachment;
 
 use warnings;
 use strict;
 
 use warnings;
 use strict;

-use IkiWiki 2.00;
-use CGI;
-$CGI::DISABLE_UPLOADS=0;
-       
-# TODO move to admin prefs
-$config{valid_attachments}="(*.mp3 and maxsize(15mb)) or (* and maxsize(50kb))";
+use IkiWiki 3.00;

 
 

-sub import { #{{{
+sub import {
+       add_underlay("javascript");
+       hook(type => "getsetup", id => "attachment", call => \&getsetup);
+       hook(type => "checkconfig", id => "attachment", call => \&checkconfig);

        hook(type => "formbuilder_setup", id => "attachment", call => \&formbuilder_setup);
        hook(type => "formbuilder", id => "attachment", call => \&formbuilder);
        hook(type => "formbuilder_setup", id => "attachment", call => \&formbuilder_setup);
        hook(type => "formbuilder", id => "attachment", call => \&formbuilder);

-} # }}}
+       IkiWiki::loadplugin("filecheck");
+}
+
+sub getsetup () {
+       return
+               plugin => {
+                       safe => 1,
+                       rebuild => 0,
+               },
+               allowed_attachments => {
+                       type => "pagespec",
+                       example => "virusfree() and mimetype(image/*) and maxsize(50kb)",
+                       description => "enhanced PageSpec specifying what attachments are allowed",
+                       link => "ikiwiki/PageSpec/attachment",
+                       safe => 1,
+                       rebuild => 0,
+               },
+               virus_checker => {
+                       type => "string",
+                       example => "clamdscan -",
+                       description => "virus checker program (reads STDIN, returns nonzero if virus found)",
+                       safe => 0, # executed
+                       rebuild => 0,
+               },
+}
+
+sub check_canattach ($$;$) {
+       my $session=shift;
+       my $dest=shift; # where it's going to be put, under the srcdir
+       my $file=shift; # the path to the attachment currently
+
+       # Don't allow an attachment to be uploaded with the same name as an
+       # existing page.
+       if (exists $IkiWiki::pagesources{$dest} &&
+           $IkiWiki::pagesources{$dest} ne $dest) {
+               error(sprintf(gettext("there is already a page named %s"), $dest));
+       }

 
 

-sub formbuilder_setup { #{{{
-       my %params=@_;
-       my $form=$params{form};
+       # Use a special pagespec to test that the attachment is valid.
+       my $allowed=1;
+       if (defined $config{allowed_attachments} &&
+           length $config{allowed_attachments}) {
+               $allowed=pagespec_match($dest,
+                       $config{allowed_attachments},
+                       file => $file,
+                       user => $session->param("name"),
+                       ip => $ENV{REMOTE_ADDR},
+               );
+       }

 
 

-       return if $form->field("do") ne "edit";
+       if (! $allowed) {
+               error(gettext("prohibited by allowed_attachments")." ($allowed)");
+       }
+       else {
+               return 1;
+       }
+}

 
 

-       $form->field(name => 'attachment', type => 'file');
-} #}}}
+sub checkconfig () {
+       $config{cgi_disable_uploads}=0;
+}

 
 

-sub formbuilder (@) { #{{{
+sub formbuilder_setup (@) {

        my %params=@_;
        my $form=$params{form};
        my %params=@_;
        my $form=$params{form};

+       my $q=$params{cgi};
+
+       if (defined $form->field("do") && ($form->field("do") eq "edit" ||
+           $form->field("do") eq "create")) {
+               # Add attachment field, set type to multipart.
+               $form->enctype(&CGI::MULTIPART);
+               $form->field(name => 'attachment', type => 'file');
+               # These buttons are not put in the usual place, so
+               # are not added to the normal formbuilder button list.
+               $form->tmpl_param("field-upload" => '<input name="_submit" type="submit" value="Upload Attachment" />');
+               $form->tmpl_param("field-link" => '<input name="_submit" type="submit" value="Insert Links" />');
+
+               # Add the toggle javascript; the attachments interface uses
+               # it to toggle visibility.
+               require IkiWiki::Plugin::toggle;
+               $form->tmpl_param("javascript" => IkiWiki::Plugin::toggle::include_javascript($params{page}, 1));
+               # Start with the attachments interface toggled invisible,
+               # but if it was used, keep it open.
+               if ($form->submitted ne "Upload Attachment" &&
+                   (! defined $q->param("attachment_select") ||
+                   ! length $q->param("attachment_select"))) {
+                       $form->tmpl_param("attachments-class" => "toggleable");
+               }
+               else {
+                       $form->tmpl_param("attachments-class" => "toggleable-open");
+               }
+       }
+}

 
 

-       return if $form->field("do") ne "edit";
+sub formbuilder (@) {
+       my %params=@_;
+       my $form=$params{form};
+       my $q=$params{cgi};

 
 

-       if ($form->submitted eq "Upload") {
-               my $q=$params{cgi};
-               my $filename=IkiWiki::basename($q->param('attachment'));
-               if (! defined $filename || ! length $filename) {
-                       # no file, so do nothing
-                       return;
-               }
+       return if ! defined $form->field("do") || ($form->field("do") ne "edit" && $form->field("do") ne "create") ;
+
+       my $filename=$q->param('attachment');
+       if (defined $filename && length $filename &&
+            ($form->submitted eq "Upload Attachment" || $form->submitted eq "Save Page")) {
+               my $session=$params{session};

                
                # This is an (apparently undocumented) way to get the name
                # of the temp file that CGI writes the upload to.
                my $tempfile=$q->tmpFileName($filename);
                
                # This is an (apparently undocumented) way to get the name
                # of the temp file that CGI writes the upload to.
                my $tempfile=$q->tmpFileName($filename);

-               
-               # To untaint the filename, escape any hazardous characters,
-               # and make sure it isn't pruned.
-               $filename=IkiWiki::possibly_foolish_untaint(IkiWiki::titlepage($filename));
-               if (IkiWiki::file_pruned($filename, $config{srcdir})) {
-                       error(gettext("bad attachment filename"));
+               if (! defined $tempfile || ! length $tempfile) {
+                       # perl 5.8 needs an alternative, awful method
+                       if ($q =~ /HASH/ && exists $q->{'.tmpfiles'}) {
+                               foreach my $key (keys(%{$q->{'.tmpfiles'}})) {
+                                       $tempfile=$q->tmpFileName(\$key);
+                                       last if defined $tempfile && length $tempfile;
+                               }
+                       }
+                       if (! defined $tempfile || ! length $tempfile) {
+                               error("CGI::tmpFileName failed to return the uploaded file name");
+                       }

                }
 
                }
 

-               # Use a pagespec to test that the attachment is valid.
-               if (exists $config{valid_attachments} &&
-                   length $config{valid_attachments}) {
-                       my $result=pagespec_match($filename, $config{valid_attachments},
-                               tempfile => $tempfile);
-                       if (! $result) {
-                               error(gettext("attachment rejected")." ($result)");
-                       }
+               $filename=linkpage(IkiWiki::possibly_foolish_untaint(
+                               attachment_location($form->field('page')).
+                               IkiWiki::basename($filename)));
+               if (IkiWiki::file_pruned($filename, $config{srcdir})) {
+                       error(gettext("bad attachment filename"));

                }
                
                }
                

-               my $fh=$q->upload('attachment');
-               if (! defined $fh || ! ref $fh) {
-                       error("failed to get filehandle");
+               # Check that the user is allowed to edit a page with the
+               # name of the attachment.
+               IkiWiki::check_canedit($filename, $q, $session, 1);
+               # And that the attachment itself is acceptable.
+               check_canattach($session, $filename, $tempfile);
+
+               # Needed for fast_file_copy and for rendering below.
+               require IkiWiki::Render;
+
+               # Move the attachment into place.
+               # Try to use a fast rename; fall back to copying.
+               IkiWiki::prep_writefile($filename, $config{srcdir});
+               unlink($config{srcdir}."/".$filename);
+               if (rename($tempfile, $config{srcdir}."/".$filename)) {
+                       # The temp file has tight permissions; loosen up.
+                       chmod(0666 & ~umask, $config{srcdir}."/".$filename);

                }
                }

-               binmode($fh);
-               while (<$fh>) {
-                       print STDERR $_."\n";
+               else {
+                       my $fh=$q->upload('attachment');
+                       if (! defined $fh || ! ref $fh) {
+                               # needed by old CGI versions
+                               $fh=$q->param('attachment');
+                               if (! defined $fh || ! ref $fh) {
+                                       # even that doesn't always work,
+                                       # fall back to opening the tempfile
+                                       $fh=undef;
+                                       open($fh, "<", $tempfile) || error("failed to open \"$tempfile\": $!");
+                               }
+                       }
+                       binmode($fh);
+                       writefile($filename, $config{srcdir}, undef, 1, sub {
+                               IkiWiki::fast_file_copy($tempfile, $filename, $fh, @_);
+                       });

                }
                }

-       }
-} # }}}
-
-package IkiWiki::PageSpec;
-
-sub parsesize { #{{{
-       my $size=shift;
-       no warnings;
-       my $base=$size+0; # force to number
-       use warnings;
-       my $multiple=1;
-       if ($size=~/kb?$/i) {
-               $multiple=2**10;
-       }
-       elsif ($size=~/mb?$/i) {
-               $multiple=2**20;
-       }
-       elsif ($size=~/gb?$/i) {
-               $multiple=2**30;
-       }
-       elsif ($size=~/tb?$/i) {
-               $multiple=2**40;
-       }
-       return $base * $multiple;
-} #}}}
-
-sub match_maxsize ($$;@) { #{{{
-       shift;
-       my $maxsize=eval{parsesize(shift)};
-       if ($@) {
-               return IkiWiki::FailReason->new("unable to parse maxsize (or number too large)");
-       }
-
-       my %params=@_;
-       if (! exists $params{tempfile}) {
-               return IkiWiki::FailReason->new("no tempfile specified");
-       }

 
 

-       if (-s $params{tempfile} > $maxsize) {
-               return IkiWiki::FailReason->new("attachment too large");
-       }
-       else {
-               return IkiWiki::SuccessReason->new("attachment size ok");
+               # Check the attachment in and trigger a wiki refresh.
+               if ($config{rcs}) {
+                       IkiWiki::rcs_add($filename);
+                       IkiWiki::disable_commit_hook();
+                       IkiWiki::rcs_commit($filename, gettext("attachment upload"),
+                               IkiWiki::rcs_prepedit($filename),
+                               $session->param("name"), $ENV{REMOTE_ADDR});
+                       IkiWiki::enable_commit_hook();
+                       IkiWiki::rcs_update();
+               }
+               IkiWiki::refresh();
+               IkiWiki::saveindex();

        }
        }

-} #}}}
-
-sub match_minsize ($$;@) { #{{{
-       shift;
-       my $minsize=eval{parsesize(shift)};
-       if ($@) {
-               return IkiWiki::FailReason->new("unable to parse minsize (or number too large)");
+       elsif ($form->submitted eq "Insert Links") {
+               my $page=quotemeta($q->param("page"));
+               my $add="";
+               foreach my $f ($q->param("attachment_select")) {
+                       $f=~s/^$page\///;
+                       $add.="[[$f]]\n";
+               }
+               $form->field(name => 'editcontent',
+                       value => $form->field('editcontent')."\n\n".$add,
+                       force => 1) if length $add;

        }
        }

+       
+       # Generate the attachment list only after having added any new
+       # attachments.
+       $form->tmpl_param("attachment_list" => [attachment_list($form->field('page'))]);
+}

 
 

-       my %params=@_;
-       if (! exists $params{tempfile}) {
-               return IkiWiki::FailReason->new("no tempfile specified");
+sub attachment_location ($) {
+       my $page=shift;
+       
+       # Put the attachment in a subdir of the page it's attached
+       # to, unless that page is an "index" page.
+       $page=~s/(^|\/)index//;
+       $page.="/" if length $page;
+       
+       return $page;
+}
+
+sub attachment_list ($) {
+       my $page=shift;
+       my $loc=attachment_location($page);
+
+       my @ret;
+       foreach my $f (values %pagesources) {
+               if (! defined pagetype($f) &&
+                   $f=~m/^\Q$loc\E[^\/]+$/ &&
+                   -e "$config{srcdir}/$f") {
+                       push @ret, {
+                               "field-select" => '<input type="checkbox" name="attachment_select" value="'.$f.'" />',
+                               link => htmllink($page, $page, $f, noimageinline => 1),
+                               size => IkiWiki::Plugin::filecheck::humansize((stat(_))[7]),
+                               mtime => displaytime($IkiWiki::pagemtime{$f}),
+                       };
+               }

        }
 
        }
 

-       if (-s $params{tempfile} < $minsize) {
-               return IkiWiki::FailReason->new("attachment too small");
-       }
-       else {
-               return IkiWiki::SuccessReason->new("attachment size ok");
-       }
-} #}}}
+       # Sort newer attachments to the top of the list, so a newly-added
+       # attachment appears just before the form used to add it.
+       return sort { $b->{mtime_raw} <=> $a->{mtime_raw} || $a->{link} cmp $b->{link} } @ret;
+}

 
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