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#!/usr/bin/perl
package IkiWiki::Plugin::remove;
use warnings;
use strict;
use IkiWiki 2.00;
sub import {
hook(type => "getsetup", id => "remove", call => \&getsetup);
hook(type => "formbuilder_setup", id => "remove", call => \&formbuilder_setup);
hook(type => "formbuilder", id => "remove", call => \&formbuilder);
hook(type => "sessioncgi", id => "remove", call => \&sessioncgi);
}
sub getsetup () {
return
plugin => {
safe => 1,
rebuild => 0,
},
}
sub check_canremove ($$$) {
my $page=shift;
my $q=shift;
my $session=shift;
# Must be a known source file.
if (! exists $pagesources{$page}) {
error(sprintf(gettext("%s does not exist"),
htmllink("", "", $page, noimageinline => 1)));
}
# Must exist on disk, and be a regular file.
my $file=$pagesources{$page};
if (! -e "$config{srcdir}/$file") {
error(sprintf(gettext("%s is not in the srcdir, so it cannot be deleted"), $file));
}
elsif (-l "$config{srcdir}/$file" && ! -f _) {
error(sprintf(gettext("%s is not a file"), $file));
}
# Must be editable.
IkiWiki::check_canedit($page, $q, $session);
# If a user can't upload an attachment, don't let them delete it.
# This is sorta overkill, but better safe than sorry.
if (! defined pagetype($pagesources{$page})) {
if (IkiWiki::Plugin::attachment->can("check_canattach")) {
IkiWiki::Plugin::attachment::check_canattach($session, $page, $file);
}
else {
error("renaming of attachments is not allowed");
}
}
}
sub formbuilder_setup (@) {
my %params=@_;
my $form=$params{form};
my $q=$params{cgi};
if (defined $form->field("do") && ($form->field("do") eq "edit" ||
$form->field("do") eq "create")) {
# Removal button for the page, and also for attachments.
push @{$params{buttons}}, "Remove" if $form->field("do") eq "edit";
$form->tmpl_param("field-remove" => '<input name="_submit" type="submit" value="Remove Attachments" />');
}
}
sub confirmation_form ($$) {
my $q=shift;
my $session=shift;
eval q{use CGI::FormBuilder};
error($@) if $@;
my $f = CGI::FormBuilder->new(
name => "remove",
header => 0,
charset => "utf-8",
method => 'POST',
javascript => 0,
params => $q,
action => $config{cgiurl},
stylesheet => IkiWiki::baseurl()."style.css",
fields => [qw{do page}],
);
$f->field(name => "do", type => "hidden", value => "remove", force => 1);
return $f, ["Remove", "Cancel"];
}
sub removal_confirm ($$@) {
my $q=shift;
my $session=shift;
my $attachment=shift;
my @pages=@_;
foreach my $page (@pages) {
check_canremove($page, $q, $session);
}
# Save current form state to allow returning to it later
# without losing any edits.
# (But don't save what button was submitted, to avoid
# looping back to here.)
# Note: "_submit" is CGI::FormBuilder internals.
$q->param(-name => "_submit", -value => "");
$session->param(postremove => scalar $q->Vars);
IkiWiki::cgi_savesession($session);
my ($f, $buttons)=confirmation_form($q, $session);
$f->title(sprintf(gettext("confirm removal of %s"),
join(", ", map { pagetitle($_) } @pages)));
$f->field(name => "page", type => "hidden", value => \@pages, force => 1);
if (defined $attachment) {
$f->field(name => "attachment", type => "hidden",
value => $attachment, force => 1);
}
IkiWiki::showform($f, $buttons, $session, $q);
exit 0;
}
sub postremove ($) {
my $session=shift;
# Load saved form state and return to edit form.
my $postremove=CGI->new($session->param("postremove"));
$session->clear("postremove");
IkiWiki::cgi_savesession($session);
IkiWiki::cgi($postremove, $session);
}
sub formbuilder (@) {
my %params=@_;
my $form=$params{form};
if (defined $form->field("do") && ($form->field("do") eq "edit" ||
$form->field("do") eq "create")) {
my $q=$params{cgi};
my $session=$params{session};
if ($form->submitted eq "Remove" && $form->field("do") eq "edit") {
removal_confirm($q, $session, 0, $form->field("page"));
}
elsif ($form->submitted eq "Remove Attachments") {
my @selected=$q->param("attachment_select");
if (! @selected) {
error(gettext("Please select the attachments to remove."));
}
removal_confirm($q, $session, 1, @selected);
}
}
}
sub sessioncgi ($$) {
my $q=shift;
if ($q->param("do") eq 'remove') {
my $session=shift;
my ($form, $buttons)=confirmation_form($q, $session);
IkiWiki::decode_form_utf8($form);
if ($form->submitted eq 'Cancel') {
postremove($session);
}
elsif ($form->submitted eq 'Remove' && $form->validate) {
my @pages=$q->param("page");
# Validate removal by checking that the page exists,
# and that the user is allowed to edit(/remove) it.
my @files;
foreach my $page (@pages) {
check_canremove($page, $q, $session);
# This untaint is safe because of the
# checks performed above, which verify the
# page is a normal file, etc.
push @files, IkiWiki::possibly_foolish_untaint($pagesources{$page});
}
# Do removal, and update the wiki.
require IkiWiki::Render;
if ($config{rcs}) {
IkiWiki::disable_commit_hook();
foreach my $file (@files) {
IkiWiki::rcs_remove($file);
}
IkiWiki::rcs_commit_staged(gettext("removed"),
$session->param("name"), $ENV{REMOTE_ADDR});
IkiWiki::enable_commit_hook();
IkiWiki::rcs_update();
}
else {
foreach my $file (@files) {
IkiWiki::prune("$config{srcdir}/$file");
}
}
IkiWiki::refresh();
IkiWiki::saveindex();
if ($q->param("attachment")) {
# Attachments were deleted, so redirect
# back to the edit form.
postremove($session);
}
else {
# The page is gone, so redirect to parent
# of the page.
my $parent=IkiWiki::dirname($pages[0]);
if (! exists $pagesources{$parent}) {
$parent="index";
}
IkiWiki::redirect($q, urlto($parent, '/', 1));
}
}
else {
IkiWiki::showform($form, $buttons, $session, $q);
}
exit 0;
}
}
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