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[git.ikiwiki.info.git] / IkiWiki / Plugin / attachment.pm
diff --git a/IkiWiki/Plugin/attachment.pm b/IkiWiki/Plugin/attachment.pm
index 48a1c58b4776851a3492cb42c25d43a78f86b92f..83dd120f649ea13898ee9cc479bb576cb94043b7 100644 (file)
--- a/IkiWiki/Plugin/attachment.pm
+++ b/IkiWiki/Plugin/attachment.pm
@@ -3,134 +3,391 @@ 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("attachment");
+       add_underlay("javascript");
+       add_underlay("jquery");
+       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_setup", id => "attachment", call => \&formbuilder_setup);
-       hook(type => "formbuilder", id => "attachment", call => \&formbuilder);
-} # }}}
+       hook(type => "formbuilder", id => "attachment", call => \&formbuilder, last => 1);
+       IkiWiki::loadplugin("filecheck");
+}
 
 
-sub formbuilder_setup { #{{{
-       my %params=@_;
-       my $form=$params{form};
+sub getsetup () {
+       return
+               plugin => {
+                       safe => 1,
+                       rebuild => 0,
+                       section => "web",
+               },
+               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,
+               },
+}
 
 
-       return if $form->field("do") ne "edit";
+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));
+       }
+
+       # 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 => $session->remote_addr(),
+               );
+       }
+
+       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};
 
 
-       return if $form->field("do") ne "edit";
+       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" />');
 
 
-       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;
-               }
-               
-               # 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"));
+               # Add all the javascript used by the attachments interface.
+               require IkiWiki::Plugin::toggle;
+               my $js=IkiWiki::Plugin::toggle::include_javascript($params{page});
+               $js.='<link rel="stylesheet" href="'.urlto("ikiwiki/jquery-ui.min.css", $params{page}).'" id="theme">'."\n";
+               my @jsfiles=qw{jquery.min jquery-ui.min
+                       jquery.tmpl.min jquery.iframe-transport
+                       jquery.fileupload jquery.fileupload-ui
+               };
+               foreach my $file (@jsfiles) {
+                       $js.='<script src="'.urlto("ikiwiki/$file.js", $params{page}).
+                            '" type="text/javascript" charset="utf-8"></script>'."\n";
                }
                }
+               $form->tmpl_param("javascript" => $js);
 
 
-               # 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)");
-                       }
+               # 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");
                }
                }
-               
-               my $fh=$q->upload('attachment');
-               if (! defined $fh || ! ref $fh) {
-                       error("failed to get filehandle");
+               else {
+                       $form->tmpl_param("attachments-class" => "toggleable-open");
                }
                }
-               binmode($fh);
-               while (<$fh>) {
-                       print STDERR $_."\n";
+               
+               # Save attachments in holding area before previewing and
+               # saving.
+               if ($form->submitted eq "Preview" ||
+                   $form->submitted eq "Save Page") {
+                       attachments_save($form, $params{session});
                }
        }
                }
        }
-} # }}}
+}
 
 
-package IkiWiki::PageSpec;
+sub formbuilder (@) {
+       my %params=@_;
+       my $form=$params{form};
+       my $q=$params{cgi};
 
 
-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;
+       return if ! defined $form->field("do") || ($form->field("do") ne "edit" && $form->field("do") ne "create") ;
+
+       my $filename=Encode::decode_utf8($q->param('attachment'));
+       if (defined $filename && length $filename) {
+               attachment_store($filename, $form, $q, $params{session});
+       }
+
+       if ($form->submitted eq "Save Page") {
+               attachments_save($form, $params{session});
        }
        }
-       elsif ($size=~/mb?$/i) {
-               $multiple=2**20;
+
+       if ($form->submitted eq "Insert Links") {
+               my $page=quotemeta(Encode::decode_utf8($q->param("page")));
+               my $add="";
+               foreach my $f ($q->param("attachment_select")) {
+                       $f=Encode::decode_utf8($f);
+                       $f=~s/^$page\///;
+                       if (IkiWiki::isinlinableimage($f) &&
+                           IkiWiki::Plugin::img->can("import")) {
+                               $add.='[[!img '.$f.' align="right" size="" alt=""]]';
+                       }
+                       else {
+                               $add.="[[$f]]";
+                       }
+                       $add.="\n";
+               }
+               $form->field(name => 'editcontent',
+                       value => $form->field('editcontent')."\n\n".$add,
+                       force => 1) if length $add;
        }
        }
-       elsif ($size=~/gb?$/i) {
-               $multiple=2**30;
+       
+       # Generate the attachment list only after having added any new
+       # attachments.
+       $form->tmpl_param("attachment_list" => [attachment_list($form->field('page'))]);
+}
+
+sub attachment_holding_location {
+       my $page=attachment_location(shift);
+
+       my $dir=$config{wikistatedir}."/attachments/".
+               IkiWiki::possibly_foolish_untaint(linkpage($page));
+       $dir=~s/\/$//;
+       return $dir;
+}
+
+sub is_held_attachment {
+       my $attachment=shift;
+
+       my $f=attachment_holding_location($attachment);
+       if (-f $f) {
+               return $f
        }
        }
-       elsif ($size=~/tb?$/i) {
-               $multiple=2**40;
+       else {
+               return undef;
        }
        }
-       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)");
+# Stores the attachment in a holding area, not yet in the wiki proper.
+sub attachment_store {
+       my $filename=shift;
+       my $form=shift;
+       my $q=shift;
+       my $session=shift;
+       
+       # 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);
+       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");
+               }
        }
 
        }
 
-       my %params=@_;
-       if (! exists $params{tempfile}) {
-               return IkiWiki::FailReason->new("no tempfile specified");
+       $filename=IkiWiki::basename($filename);
+       $filename=~s/.*\\+(.+)/$1/; # hello, windows
+       $filename=IkiWiki::possibly_foolish_untaint(linkpage($filename));
+       my $dest=attachment_holding_location($form->field('page'));
+       
+       # Check that the user is allowed to edit the attachment.
+       my $final_filename=
+               linkpage(IkiWiki::possibly_foolish_untaint(
+                       attachment_location($form->field('page')))).
+               $filename;
+       eval {
+               if (IkiWiki::file_pruned($final_filename)) {
+                       error(gettext("bad attachment filename"));
+               }
+               IkiWiki::check_canedit($final_filename, $q, $session);
+               # And that the attachment itself is acceptable.
+               check_canattach($session, $final_filename, $tempfile);
+       };
+       if ($@) {
+               json_response($q, $form, $dest."/".$filename, $@);
+               error $@;
        }
 
        }
 
-       if (-s $params{tempfile} > $maxsize) {
-               return IkiWiki::FailReason->new("attachment too large");
+       # Move the attachment into holding directory.
+       # Try to use a fast rename; fall back to copying.
+       IkiWiki::prep_writefile($filename, $dest);
+       unlink($dest."/".$filename);
+       if (rename($tempfile, $dest."/".$filename)) {
+               # The temp file has tight permissions; loosen up.
+               chmod(0666 & ~umask, $dest."/".$filename);
        }
        else {
        }
        else {
-               return IkiWiki::SuccessReason->new("attachment size ok");
+               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);
+               require IkiWiki::Render; 
+               writefile($filename, $dest, undef, 1, sub {
+                       IkiWiki::fast_file_copy($tempfile, $filename, $fh, @_);
+               });
        }
        }
-} #}}}
 
 
-sub match_minsize ($$;@) { #{{{
-       shift;
-       my $minsize=eval{parsesize(shift)};
-       if ($@) {
-               return IkiWiki::FailReason->new("unable to parse minsize (or number too large)");
+       json_response($q, $form, $dest."/".$filename, stored_msg());
+}
+
+# Save all stored attachments for a page.
+sub attachments_save {
+       my $form=shift;
+       my $session=shift;
+
+       # Move attachments out of holding directory.
+       my @attachments;
+       my $dir=attachment_holding_location($form->field('page'));
+       foreach my $filename (glob("$dir/*")) {
+               $filename=Encode::decode_utf8($filename);
+               next unless -f $filename;
+               my $destdir=linkpage(IkiWiki::possibly_foolish_untaint(
+                       attachment_location($form->field('page'))));
+               my $absdestdir=$config{srcdir}."/".$destdir;
+               my $destfile=IkiWiki::basename($filename);
+               my $dest=$absdestdir.$destfile;
+               unlink($dest);
+               IkiWiki::prep_writefile($destfile, $absdestdir);
+               rename($filename, $dest);
+               push @attachments, $destdir.$destfile;
        }
        }
+       return unless @attachments;
+       require IkiWiki::Render;
+       IkiWiki::prune($dir, $config{wikistatedir}."/attachments");
 
 
-       my %params=@_;
-       if (! exists $params{tempfile}) {
-               return IkiWiki::FailReason->new("no tempfile specified");
+       # Check the attachments in and trigger a wiki refresh.
+       if ($config{rcs}) {
+               IkiWiki::rcs_add($_) foreach @attachments;
+               IkiWiki::disable_commit_hook();
+               IkiWiki::rcs_commit_staged(
+                       message => gettext("attachment upload"),
+                       session => $session,
+               );
+               IkiWiki::enable_commit_hook();
+               IkiWiki::rcs_update();
        }
        }
+       IkiWiki::refresh();
+       IkiWiki::saveindex();
+}
+
+sub attachment_location ($) {
+       my $page=shift;
+       
+       # Put the attachment in a subdir of the page it's attached
+       # to, unless that page is the "index" page.
+       return "" if $page eq 'index';
+       $page.="/" if length $page;
+       
+       return $page;
+}
+
+sub attachment_list ($) {
+       my $page=shift;
+       my $loc=attachment_location($page);
 
 
-       if (-s $params{tempfile} < $minsize) {
-               return IkiWiki::FailReason->new("attachment too small");
+       my $std=sub {
+               my $file=shift;
+               my $mtime=shift;
+               my $date=shift;
+               my $size=shift;
+
+               name => $file,
+               size => IkiWiki::Plugin::filecheck::humansize($size),
+               mtime => $date,
+               mtime_raw => $mtime,
+       };
+
+       # attachments already in the wiki
+       my %attachments;
+       foreach my $f (values %pagesources) {
+               if (! defined pagetype($f) &&
+                   $f=~m/^\Q$loc\E[^\/]+$/) {
+                       $attachments{$f}={
+                               $std->($f, $IkiWiki::pagemtime{$f}, displaytime($IkiWiki::pagemtime{$f}), (stat($f))[7]),
+                               link => htmllink($page, $page, $f, noimageinline => 1),
+                       };
+               }
        }
        }
-       else {
-               return IkiWiki::SuccessReason->new("attachment size ok");
+       
+       # attachments in holding directory
+       my $dir=attachment_holding_location($page);
+       my $heldmsg=gettext("this attachment is not yet saved");
+       foreach my $file (glob("$dir/*")) {
+               $file=Encode::decode_utf8($file);
+               next unless -f $file;
+               my $base=IkiWiki::basename($file);
+               my $f=$loc.$base;
+               $attachments{$f}={
+                       $std->($f, (stat($file))[9]*2, stored_msg(), (stat(_))[7]),
+                       link => $base,
+               }
+       }
+
+       # Sort newer attachments to the end of the list.
+       return sort { $a->{mtime_raw} <=> $b->{mtime_raw} || $a->{link} cmp $b->{link} }
+               values %attachments;
+}
+
+sub stored_msg {
+       gettext("just uploaded");
+}
+
+sub json_response ($$$$) {
+       my $q=shift;
+       my $form=shift;
+       my $filename=shift;
+       my $stored_msg=shift;
+
+       if (! defined $form->submitted ||
+           $form->submitted ne "Upload Attachment") {
+               eval q{use JSON};
+               error $@ if $@;
+               print "Content-type: text/html\n\n";
+               my $size=-s $filename;
+               print to_json([
+                       {
+                               name => IkiWiki::basename($filename),
+                               size => $size,
+                               humansize => IkiWiki::Plugin::filecheck::humansize($size),
+                               stored_msg => $stored_msg,
+                               
+                       }
+               ]);
+               exit 0;
        }
        }
-} #}}}
+}
 
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Unnamed repository; edit this file 'description' to name the repository.