299 lines
7.3 KiB
Perl
299 lines
7.3 KiB
Perl
#!/usr/bin/perl
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package IkiWiki::Plugin::remove;
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use warnings;
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use strict;
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use IkiWiki 3.00;
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sub import {
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hook(type => "getsetup", id => "remove", call => \&getsetup);
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hook(type => "formbuilder_setup", id => "remove", call => \&formbuilder_setup);
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hook(type => "formbuilder", id => "remove", call => \&formbuilder);
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hook(type => "sessioncgi", id => "remove", call => \&sessioncgi);
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}
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sub getsetup () {
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return
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plugin => {
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safe => 1,
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rebuild => 0,
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section => "web",
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},
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}
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sub allowed_dirs {
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no warnings 'once';
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return grep { defined $_ } (
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$config{srcdir},
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$IkiWiki::Plugin::transient::transientdir,
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);
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}
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sub check_canremove ($$$) {
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my $page=shift;
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my $q=shift;
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my $session=shift;
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# Must be a known source file.
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if (! exists $pagesources{$page}) {
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error(sprintf(gettext("%s does not exist"),
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htmllink("", "", $page, noimageinline => 1)));
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}
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# Must exist in either the srcdir or a suitable underlay (e.g.
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# transient underlay), and be a regular file.
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my $file=$pagesources{$page};
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my $dir;
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foreach my $srcdir (allowed_dirs()) {
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if (-e "$srcdir/$file") {
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$dir = $srcdir;
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last;
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}
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}
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if (! defined $dir) {
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error(sprintf(gettext("%s is not in the srcdir, so it cannot be deleted"), $file));
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}
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elsif (-l "$dir/$file" && ! -f _) {
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error(sprintf(gettext("%s is not a file"), $file));
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}
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# If a user can't upload an attachment, don't let them delete it.
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# This is sorta overkill, but better safe than sorry.
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if (! defined pagetype($pagesources{$page})) {
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if (IkiWiki::Plugin::attachment->can("check_canattach")) {
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IkiWiki::Plugin::attachment::check_canattach($session, $page, "$dir/$file");
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}
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else {
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error("removal of attachments is not allowed");
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}
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}
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my $canremove;
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IkiWiki::run_hooks(canremove => sub {
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return if defined $canremove;
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my $ret=shift->(page => $page, cgi => $q, session => $session);
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if (defined $ret) {
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if ($ret eq "") {
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$canremove=1;
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}
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elsif (ref $ret eq 'CODE') {
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$ret->();
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$canremove=0;
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}
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elsif (defined $ret) {
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error($ret);
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$canremove=0;
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}
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}
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});
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return defined $canremove ? $canremove : 1;
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}
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sub formbuilder_setup (@) {
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my %params=@_;
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my $form=$params{form};
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my $q=$params{cgi};
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if (defined $form->field("do") && ($form->field("do") eq "edit" ||
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$form->field("do") eq "create")) {
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# Removal button for the page, and also for attachments.
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push @{$params{buttons}}, "Remove" if $form->field("do") eq "edit";
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$form->tmpl_param("field-remove" => '<input name="_submit" type="submit" value="Remove Attachments" />');
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}
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}
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sub confirmation_form ($$) {
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my $q=shift;
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my $session=shift;
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eval q{use CGI::FormBuilder};
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error($@) if $@;
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my $f = CGI::FormBuilder->new(
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name => "remove",
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header => 0,
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charset => "utf-8",
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method => 'POST',
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javascript => 0,
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params => $q,
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action => IkiWiki::cgiurl(),
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stylesheet => 1,
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fields => [qw{do page}],
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);
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$f->field(name => "sid", type => "hidden", value => $session->id,
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force => 1);
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$f->field(name => "do", type => "hidden", value => "remove", force => 1);
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return $f, ["Remove", "Cancel"];
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}
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sub removal_confirm ($$@) {
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my $q=shift;
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my $session=shift;
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my $attachment=shift;
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my @pages=@_;
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# Special case for unsaved attachments.
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foreach my $page (@pages) {
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if ($attachment && IkiWiki::Plugin::attachment->can("is_held_attachment")) {
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my $f=IkiWiki::Plugin::attachment::is_held_attachment($page);
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if (defined $f) {
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require IkiWiki::Render;
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IkiWiki::prune($f, "$config{wikistatedir}/attachments");
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}
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}
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}
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@pages=grep { exists $pagesources{$_} } @pages;
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return unless @pages;
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foreach my $page (@pages) {
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IkiWiki::check_canedit($page, $q, $session);
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check_canremove($page, $q, $session);
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}
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# Save current form state to allow returning to it later
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# without losing any edits.
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# (But don't save what button was submitted, to avoid
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# looping back to here.)
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# Note: "_submit" is CGI::FormBuilder internals.
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$q->param(-name => "_submit", -value => "");
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$session->param(postremove => scalar $q->Vars);
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IkiWiki::cgi_savesession($session);
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my ($f, $buttons)=confirmation_form($q, $session);
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$f->title(sprintf(gettext("confirm removal of %s"),
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join(", ", map { pagetitle($_) } @pages)));
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$f->field(name => "page", type => "hidden", value => \@pages, force => 1);
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if (defined $attachment) {
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$f->field(name => "attachment", type => "hidden",
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value => $attachment, force => 1);
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}
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IkiWiki::showform($f, $buttons, $session, $q);
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exit 0;
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}
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sub postremove ($) {
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my $session=shift;
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# Load saved form state and return to edit form.
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my $postremove=CGI->new($session->param("postremove"));
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$session->clear("postremove");
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IkiWiki::cgi_savesession($session);
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IkiWiki::cgi($postremove, $session);
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}
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sub formbuilder (@) {
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my %params=@_;
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my $form=$params{form};
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if (defined $form->field("do") && ($form->field("do") eq "edit" ||
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$form->field("do") eq "create")) {
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my $q=$params{cgi};
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my $session=$params{session};
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if ($form->submitted eq "Remove" && $form->field("do") eq "edit") {
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removal_confirm($q, $session, 0, $form->field("page"));
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}
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elsif ($form->submitted eq "Remove Attachments") {
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my @selected=map { Encode::decode_utf8($_) } $q->param("attachment_select");
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if (! @selected) {
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error(gettext("Please select the attachments to remove."));
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}
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removal_confirm($q, $session, 1, @selected);
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}
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}
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}
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sub sessioncgi ($$) {
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my $q=shift;
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if ($q->param("do") eq 'remove') {
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my $session=shift;
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my ($form, $buttons)=confirmation_form($q, $session);
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IkiWiki::decode_form_utf8($form);
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if ($form->submitted eq 'Cancel') {
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postremove($session);
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}
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elsif ($form->submitted eq 'Remove' && $form->validate) {
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IkiWiki::checksessionexpiry($q, $session);
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my @pages=$form->field("page");
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# Validate removal by checking that the page exists,
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# and that the user is allowed to edit(/remove) it.
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my @files;
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foreach my $page (@pages) {
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IkiWiki::check_canedit($page, $q, $session);
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check_canremove($page, $q, $session);
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# This untaint is safe because of the
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# checks performed above, which verify the
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# page is a normal file, etc.
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push @files, IkiWiki::possibly_foolish_untaint($pagesources{$page});
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}
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# Do removal, and update the wiki.
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require IkiWiki::Render;
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if ($config{rcs}) {
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IkiWiki::disable_commit_hook();
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}
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my $rcs_removed = 1;
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foreach my $file (@files) {
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foreach my $srcdir (allowed_dirs()) {
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if (-e "$srcdir/$file") {
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if ($srcdir eq $config{srcdir} && $config{rcs}) {
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IkiWiki::rcs_remove($file);
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$rcs_removed = 1;
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}
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else {
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IkiWiki::prune("$srcdir/$file", $srcdir);
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}
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}
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}
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}
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if ($config{rcs}) {
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if ($rcs_removed) {
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IkiWiki::rcs_commit_staged(
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message => gettext("removed"),
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session => $session,
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);
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}
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IkiWiki::enable_commit_hook();
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IkiWiki::rcs_update();
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}
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IkiWiki::refresh();
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IkiWiki::saveindex();
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if ($q->param("attachment")) {
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# Attachments were deleted, so redirect
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# back to the edit form.
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postremove($session);
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}
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else {
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# The page is gone, so redirect to parent
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# of the page.
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my $parent=IkiWiki::dirname($pages[0]);
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if (! exists $pagesources{$parent}) {
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$parent="index";
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}
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IkiWiki::redirect($q, urlto($parent));
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}
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}
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else {
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removal_confirm($q, $session, 0, $form->field("page"));
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}
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exit 0;
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}
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}
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1
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