1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
|
#!/usr/bin/perl
package IkiWiki::Plugin::attachment;
use warnings;
use strict;
use IkiWiki 3.00;
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);
IkiWiki::loadplugin("filecheck");
}
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,
},
}
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 => $ENV{REMOTE_ADDR},
);
}
if (! $allowed) {
error(gettext("prohibited by allowed_attachments")." ($allowed)");
}
else {
return 1;
}
}
sub checkconfig () {
$config{cgi_disable_uploads}=0;
}
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")) {
# 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");
}
}
}
sub formbuilder (@) {
my %params=@_;
my $form=$params{form};
my $q=$params{cgi};
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 $filename &&
($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);
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");
}
}
$filename=IkiWiki::basename($filename);
$filename=~s/.*\\+(.+)/$1/; # hello, windows
$filename=linkpage(IkiWiki::possibly_foolish_untaint(
attachment_location($form->field('page')).
$filename));
if (IkiWiki::file_pruned($filename)) {
error(gettext("bad attachment filename"));
}
# 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);
}
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, $fh, @_);
});
}
# Check the attachment in and trigger a wiki refresh.
if ($config{rcs}) {
IkiWiki::rcs_add($filename);
IkiWiki::disable_commit_hook();
IkiWiki::rcs_commit($filename, gettext("attachment upload"),
IkiWiki::rcs_prepedit($filename),
$session->param("name"), $ENV{REMOTE_ADDR});
IkiWiki::enable_commit_hook();
IkiWiki::rcs_update();
}
IkiWiki::refresh();
IkiWiki::saveindex();
}
elsif ($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) &&
UNIVERSAL::can("IkiWiki::Plugin::img", "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;
}
# Generate the attachment list only after having added any new
# attachments.
$form->tmpl_param("attachment_list" => [attachment_list($form->field('page'))]);
}
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[^\/]+$/) {
push @ret, {
"field-select" => '<input type="checkbox" name="attachment_select" value="'.$f.'" />',
link => htmllink($page, $page, $f, noimageinline => 1),
size => IkiWiki::Plugin::filecheck::humansize((stat(_))[7]),
mtime => displaytime($IkiWiki::pagemtime{$f}),
mtime_raw => $IkiWiki::pagemtime{$f},
};
}
}
# 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;
}
1
|