*/ use dokuwiki\Ui\MediaRevisions; use dokuwiki\Cache\CacheImageMod; use splitbrain\slika\Exception; use dokuwiki\PassHash; use dokuwiki\ChangeLog\MediaChangeLog; use dokuwiki\Extension\Event; use dokuwiki\Form\Form; use dokuwiki\HTTP\DokuHTTPClient; use dokuwiki\Logger; use dokuwiki\Subscriptions\MediaSubscriptionSender; use dokuwiki\Ui\Media\DisplayRow; use dokuwiki\Ui\Media\DisplayTile; use dokuwiki\Ui\MediaDiff; use dokuwiki\Utf8\PhpString; use dokuwiki\Utf8\Sort; use splitbrain\slika\Slika; /** * Lists pages which currently use a media file selected for deletion * * References uses the same visual as search results and share * their CSS tags except pagenames won't be links. * * @author Matthias Grimm * * @param array $data * @param string $id */ function media_filesinuse($data, $id) { global $lang; echo '

' . $lang['reference'] . ' `' . hsc(noNS($id)) . '`

'; echo '

' . hsc($lang['ref_inuse']) . '

'; $hidden = 0; //count of hits without read permission foreach ($data as $row) { if (auth_quickaclcheck($row) >= AUTH_READ && isVisiblePage($row)) { echo '

'; echo '' . hsc($row) . ''; echo '

'; } else $hidden++; } if ($hidden) { echo '

' . $lang['ref_hidden'] . '

'; } } /** * Handles the saving of image meta data * * @author Andreas Gohr * @author Kate Arzamastseva * * @param string $id media id * @param int $auth permission level * @param array $data * @return false|string */ function media_metasave($id, $auth, $data) { if ($auth < AUTH_UPLOAD) return false; if (!checkSecurityToken()) return false; global $lang; global $conf; $src = mediaFN($id); $meta = new JpegMeta($src); $meta->_parseAll(); foreach ($data as $key => $val) { $val = trim($val); if (empty($val)) { $meta->deleteField($key); } else { $meta->setField($key, $val); } } $old = @filemtime($src); if (!file_exists(mediaFN($id, $old)) && file_exists($src)) { // add old revision to the attic media_saveOldRevision($id); } $filesize_old = filesize($src); if ($meta->save()) { if ($conf['fperm']) chmod($src, $conf['fperm']); @clearstatcache(true, $src); $new = @filemtime($src); $filesize_new = filesize($src); $sizechange = $filesize_new - $filesize_old; // add a log entry to the media changelog addMediaLogEntry($new, $id, DOKU_CHANGE_TYPE_EDIT, $lang['media_meta_edited'], '', null, $sizechange); msg($lang['metasaveok'], 1); return $id; } else { msg($lang['metasaveerr'], -1); return false; } } /** * check if a media is external source * * @author Gerrit Uitslag * * @param string $id the media ID or URL * @return bool */ function media_isexternal($id) { if (preg_match('#^(?:https?|ftp)://#i', $id)) return true; return false; } /** * Check if a media item is public (eg, external URL or readable by @ALL) * * @author Andreas Gohr * * @param string $id the media ID or URL * @return bool */ function media_ispublic($id) { if (media_isexternal($id)) return true; $id = cleanID($id); if (auth_aclcheck(getNS($id) . ':*', '', []) >= AUTH_READ) return true; return false; } /** * Display the form to edit image meta data * * @author Andreas Gohr * @author Kate Arzamastseva * * @param string $id media id * @param int $auth permission level * @return bool */ function media_metaform($id, $auth) { global $lang; if ($auth < AUTH_UPLOAD) { echo '

' . $lang['media_perm_upload'] . '

' . DOKU_LF; return false; } // load the field descriptions static $fields = null; if ($fields === null) { $config_files = getConfigFiles('mediameta'); foreach ($config_files as $config_file) { if (file_exists($config_file)) include($config_file); } } $src = mediaFN($id); // output $form = new Form([ 'action' => media_managerURL(['tab_details' => 'view'], '&'), 'class' => 'meta' ]); $form->addTagOpen('div')->addClass('no'); $form->setHiddenField('img', $id); $form->setHiddenField('mediado', 'save'); foreach ($fields as $key => $field) { // get current value if (empty($field[0])) continue; $tags = [$field[0]]; if (isset($field[3]) && is_array($field[3])) $tags = array_merge($tags, $field[3]); $value = tpl_img_getTag($tags, '', $src); $value = cleanText($value); // prepare attributes $p = [ 'class' => 'edit', 'id' => 'meta__' . $key, 'name' => 'meta[' . $field[0] . ']' ]; $form->addTagOpen('div')->addClass('row'); if ($field[2] == 'text') { $form->addTextInput( $p['name'], ($lang[$field[1]] ?: $field[1] . ':') )->id($p['id'])->addClass($p['class'])->val($value); } else { $form->addTextarea($p['name'], $lang[$field[1]])->id($p['id']) ->val(formText($value)) ->addClass($p['class']) ->attr('rows', '6')->attr('cols', '50'); } $form->addTagClose('div'); } $form->addTagOpen('div')->addClass('buttons'); $form->addButton('mediado[save]', $lang['btn_save'])->attr('type', 'submit') ->attrs(['accesskey' => 's']); $form->addTagClose('div'); $form->addTagClose('div'); echo $form->toHTML(); return true; } /** * Convenience function to check if a media file is still in use * * @author Michael Klier * * @param string $id media id * @return array|bool */ function media_inuse($id) { global $conf; if ($conf['refcheck']) { $mediareferences = ft_mediause($id, true); if ($mediareferences === []) { return false; } else { return $mediareferences; } } else { return false; } } /** * Handles media file deletions * * If configured, checks for media references before deletion * * @author Andreas Gohr * * @param string $id media id * @param int $auth no longer used * @return int One of: 0, * DOKU_MEDIA_DELETED, * DOKU_MEDIA_DELETED | DOKU_MEDIA_EMPTY_NS, * DOKU_MEDIA_NOT_AUTH, * DOKU_MEDIA_INUSE */ function media_delete($id, $auth) { global $lang; $auth = auth_quickaclcheck(ltrim(getNS($id) . ':*', ':')); if ($auth < AUTH_DELETE) return DOKU_MEDIA_NOT_AUTH; if (media_inuse($id)) return DOKU_MEDIA_INUSE; $file = mediaFN($id); // trigger an event - MEDIA_DELETE_FILE $data = []; $data['id'] = $id; $data['name'] = PhpString::basename($file); $data['path'] = $file; $data['size'] = (file_exists($file)) ? filesize($file) : 0; $data['unl'] = false; $data['del'] = false; $evt = new Event('MEDIA_DELETE_FILE', $data); if ($evt->advise_before()) { $old = @filemtime($file); if (!file_exists(mediaFN($id, $old)) && file_exists($file)) { // add old revision to the attic media_saveOldRevision($id); } $data['unl'] = @unlink($file); if ($data['unl']) { $sizechange = 0 - $data['size']; addMediaLogEntry(time(), $id, DOKU_CHANGE_TYPE_DELETE, $lang['deleted'], '', null, $sizechange); $data['del'] = io_sweepNS($id, 'mediadir'); } } $evt->advise_after(); unset($evt); if ($data['unl'] && $data['del']) { return DOKU_MEDIA_DELETED | DOKU_MEDIA_EMPTY_NS; } return $data['unl'] ? DOKU_MEDIA_DELETED : 0; } /** * Handle file uploads via XMLHttpRequest * * @param string $ns target namespace * @param int $auth current auth check result * @return false|string false on error, id of the new file on success */ function media_upload_xhr($ns, $auth) { if (!checkSecurityToken()) return false; global $INPUT; $id = $INPUT->get->str('qqfile'); [$ext, $mime] = mimetype($id); $input = fopen("php://input", "r"); if (!($tmp = io_mktmpdir())) return false; $path = $tmp . '/' . md5($id); $target = fopen($path, "w"); $realSize = stream_copy_to_stream($input, $target); fclose($target); fclose($input); if ($INPUT->server->has('CONTENT_LENGTH') && ($realSize != $INPUT->server->int('CONTENT_LENGTH'))) { unlink($path); return false; } $res = media_save( ['name' => $path, 'mime' => $mime, 'ext' => $ext], $ns . ':' . $id, ($INPUT->get->str('ow') == 'true'), $auth, 'copy' ); unlink($path); if ($tmp) io_rmdir($tmp, true); if (is_array($res)) { msg($res[0], $res[1]); return false; } return $res; } /** * Handles media file uploads * * @author Andreas Gohr * @author Michael Klier * * @param string $ns target namespace * @param int $auth current auth check result * @param bool|array $file $_FILES member, $_FILES['upload'] if false * @return false|string false on error, id of the new file on success */ function media_upload($ns, $auth, $file = false) { if (!checkSecurityToken()) return false; global $lang; global $INPUT; // get file and id $id = $INPUT->post->str('mediaid'); if (!$file) $file = $_FILES['upload']; if (empty($id)) $id = $file['name']; // check for errors (messages are done in lib/exe/mediamanager.php) if ($file['error']) return false; // check extensions [$fext, $fmime] = mimetype($file['name']); [$iext, $imime] = mimetype($id); if ($fext && !$iext) { // no extension specified in id - read original one $id .= '.' . $fext; $imime = $fmime; } elseif ($fext && $fext != $iext) { // extension was changed, print warning msg(sprintf($lang['mediaextchange'], $fext, $iext)); } $res = media_save( [ 'name' => $file['tmp_name'], 'mime' => $imime, 'ext' => $iext ], $ns . ':' . $id, $INPUT->post->bool('ow'), $auth, 'copy_uploaded_file' ); if (is_array($res)) { msg($res[0], $res[1]); return false; } return $res; } /** * An alternative to move_uploaded_file that copies * * Using copy, makes sure any setgid bits on the media directory are honored * * @see move_uploaded_file() * * @param string $from * @param string $to * @return bool */ function copy_uploaded_file($from, $to) { if (!is_uploaded_file($from)) return false; $ok = copy($from, $to); @unlink($from); return $ok; } /** * This generates an action event and delegates to _media_upload_action(). * Action plugins are allowed to pre/postprocess the uploaded file. * (The triggered event is preventable.) * * Event data: * $data[0] fn_tmp: the temporary file name (read from $_FILES) * $data[1] fn: the file name of the uploaded file * $data[2] id: the future directory id of the uploaded file * $data[3] imime: the mimetype of the uploaded file * $data[4] overwrite: if an existing file is going to be overwritten * $data[5] move: name of function that performs move/copy/.. * * @triggers MEDIA_UPLOAD_FINISH * * @param array $file * @param string $id media id * @param bool $ow overwrite? * @param int $auth permission level * @param string $move name of functions that performs move/copy/.. * @return false|array|string */ function media_save($file, $id, $ow, $auth, $move) { if ($auth < AUTH_UPLOAD) { return ["You don't have permissions to upload files.", -1]; } if (!isset($file['mime']) || !isset($file['ext'])) { [$ext, $mime] = mimetype($id); if (!isset($file['mime'])) { $file['mime'] = $mime; } if (!isset($file['ext'])) { $file['ext'] = $ext; } } global $lang, $conf; // get filename $id = cleanID($id); $fn = mediaFN($id); // get filetype regexp $types = array_keys(getMimeTypes()); $types = array_map( static fn($q) => preg_quote($q, "/"), $types ); $regex = implode('|', $types); // because a temp file was created already if (!preg_match('/\.(' . $regex . ')$/i', $fn)) { return [$lang['uploadwrong'], -1]; } //check for overwrite $overwrite = file_exists($fn); $auth_ow = (($conf['mediarevisions']) ? AUTH_UPLOAD : AUTH_DELETE); if ($overwrite && (!$ow || $auth < $auth_ow)) { return [$lang['uploadexist'], 0]; } // check for valid content $ok = media_contentcheck($file['name'], $file['mime']); if ($ok == -1) { return [sprintf($lang['uploadbadcontent'], '.' . $file['ext']), -1]; } elseif ($ok == -2) { return [$lang['uploadspam'], -1]; } elseif ($ok == -3) { return [$lang['uploadxss'], -1]; } // prepare event data $data = []; $data[0] = $file['name']; $data[1] = $fn; $data[2] = $id; $data[3] = $file['mime']; $data[4] = $overwrite; $data[5] = $move; // trigger event return Event::createAndTrigger('MEDIA_UPLOAD_FINISH', $data, '_media_upload_action', true); } /** * Callback adapter for media_upload_finish() triggered by MEDIA_UPLOAD_FINISH * * @author Michael Klier * * @param array $data event data * @return false|array|string */ function _media_upload_action($data) { // fixme do further sanity tests of given data? if (is_array($data) && count($data) === 6) { return media_upload_finish($data[0], $data[1], $data[2], $data[3], $data[4], $data[5]); } else { return false; //callback error } } /** * Saves an uploaded media file * * @author Andreas Gohr * @author Michael Klier * @author Kate Arzamastseva * * @param string $fn_tmp * @param string $fn * @param string $id media id * @param string $imime mime type * @param bool $overwrite overwrite existing? * @param string $move function name * @return array|string */ function media_upload_finish($fn_tmp, $fn, $id, $imime, $overwrite, $move = 'move_uploaded_file') { global $conf; global $lang; global $REV; $old = @filemtime($fn); if (!file_exists(mediaFN($id, $old)) && file_exists($fn)) { // add old revision to the attic if missing media_saveOldRevision($id); } // prepare directory io_createNamespace($id, 'media'); $filesize_old = file_exists($fn) ? filesize($fn) : 0; if ($move($fn_tmp, $fn)) { @clearstatcache(true, $fn); $new = @filemtime($fn); // Set the correct permission here. // Always chmod media because they may be saved with different permissions than expected from the php umask. // (Should normally chmod to $conf['fperm'] only if $conf['fperm'] is set.) chmod($fn, $conf['fmode']); msg($lang['uploadsucc'], 1); media_notify($id, $fn, $imime, $old, $new); // add a log entry to the media changelog $filesize_new = filesize($fn); $sizechange = $filesize_new - $filesize_old; if ($REV) { addMediaLogEntry( $new, $id, DOKU_CHANGE_TYPE_REVERT, sprintf($lang['restored'], dformat($REV)), $REV, null, $sizechange ); } elseif ($overwrite) { addMediaLogEntry($new, $id, DOKU_CHANGE_TYPE_EDIT, '', '', null, $sizechange); } else { addMediaLogEntry($new, $id, DOKU_CHANGE_TYPE_CREATE, $lang['created'], '', null, $sizechange); } return $id; } else { return [$lang['uploadfail'], -1]; } } /** * Moves the current version of media file to the media_attic * directory * * @author Kate Arzamastseva * * @param string $id * @return int - revision date */ function media_saveOldRevision($id) { global $conf, $lang; $oldf = mediaFN($id); if (!file_exists($oldf)) return ''; $date = filemtime($oldf); if (!$conf['mediarevisions']) return $date; $medialog = new MediaChangeLog($id); if (!$medialog->getRevisionInfo($date)) { // there was an external edit, // there is no log entry for current version of file $sizechange = filesize($oldf); if (!file_exists(mediaMetaFN($id, '.changes'))) { addMediaLogEntry($date, $id, DOKU_CHANGE_TYPE_CREATE, $lang['created'], '', null, $sizechange); } else { $oldRev = $medialog->getRevisions(-1, 1); // from changelog $oldRev = (int) (empty($oldRev) ? 0 : $oldRev[0]); $filesize_old = filesize(mediaFN($id, $oldRev)); $sizechange -= $filesize_old; addMediaLogEntry($date, $id, DOKU_CHANGE_TYPE_EDIT, '', '', null, $sizechange); } } $newf = mediaFN($id, $date); io_makeFileDir($newf); if (copy($oldf, $newf)) { // Set the correct permission here. // Always chmod media because they may be saved with different permissions than expected from the php umask. // (Should normally chmod to $conf['fperm'] only if $conf['fperm'] is set.) chmod($newf, $conf['fmode']); } return $date; } /** * This function checks if the uploaded content is really what the * mimetype says it is. We also do spam checking for text types here. * * We need to do this stuff because we can not rely on the browser * to do this check correctly. Yes, IE is broken as usual. * * @author Andreas Gohr * @link http://www.splitbrain.org/blog/2007-02/12-internet_explorer_facilitates_cross_site_scripting * @fixme check all 26 magic IE filetypes here? * * @param string $file path to file * @param string $mime mimetype * @return int */ function media_contentcheck($file, $mime) { global $conf; if ($conf['iexssprotect']) { $fh = @fopen($file, 'rb'); if ($fh) { $bytes = fread($fh, 256); fclose($fh); if (preg_match('/<(script|a|img|html|body|iframe)[\s>]/i', $bytes)) { return -3; //XSS: possibly malicious content } } } if (str_starts_with($mime, 'image/')) { $info = @getimagesize($file); if ($mime == 'image/gif' && $info[2] != 1) { return -1; // uploaded content did not match the file extension } elseif ($mime == 'image/jpeg' && $info[2] != 2) { return -1; } elseif ($mime == 'image/png' && $info[2] != 3) { return -1; } # fixme maybe check other images types as well } elseif (str_starts_with($mime, 'text/')) { global $TEXT; $TEXT = io_readFile($file); if (checkwordblock()) { return -2; //blocked by the spam blacklist } } return 0; } /** * Send a notify mail on uploads * * @author Andreas Gohr * * @param string $id media id * @param string $file path to file * @param string $mime mime type * @param bool|int $old_rev revision timestamp or false */ function media_notify($id, $file, $mime, $old_rev = false, $current_rev = false) { global $conf; if (empty($conf['notify'])) return; //notify enabled? $subscription = new MediaSubscriptionSender(); $subscription->sendMediaDiff($conf['notify'], 'uploadmail', $id, $old_rev, $current_rev); } /** * List all files in a given Media namespace * * @param string $ns namespace * @param null|int $auth permission level * @param string $jump id * @param bool $fullscreenview * @param bool|string $sort sorting order, false skips sorting */ function media_filelist($ns, $auth = null, $jump = '', $fullscreenview = false, $sort = false) { global $conf; global $lang; $ns = cleanID($ns); // check auth our self if not given (needed for ajax calls) if (is_null($auth)) $auth = auth_quickaclcheck("$ns:*"); if (!$fullscreenview) echo '

:' . hsc($ns) . '

' . NL; if ($auth < AUTH_READ) { // FIXME: print permission warning here instead? echo '

' . $lang['nothingfound'] . '

' . NL; } else { if (!$fullscreenview) { media_uploadform($ns, $auth); media_searchform($ns); } $dir = utf8_encodeFN(str_replace(':', '/', $ns)); $data = []; search( $data, $conf['mediadir'], 'search_mediafiles', ['showmsg' => true, 'depth' => 1], $dir, 1, $sort ); if (!count($data)) { echo '

' . $lang['nothingfound'] . '

' . NL; } else { if ($fullscreenview) { echo '

'; $display = new DisplayTile($item); $display->scrollIntoView($jump == $item->getID()); $display->show(); echo '

' . NL; } } } /** * Prints tabs for files list actions * * @author Kate Arzamastseva * @author Adrian Lang * * @param string $selected_tab - opened tab */ function media_tabs_files($selected_tab = '') { global $lang; $tabs = []; foreach ( [ 'files' => 'mediaselect', 'upload' => 'media_uploadtab', 'search' => 'media_searchtab' ] as $tab => $caption ) { $tabs[$tab] = [ 'href' => media_managerURL(['tab_files' => $tab], '&'), 'caption' => $lang[$caption] ]; } html_tabs($tabs, $selected_tab); } /** * Prints tabs for files details actions * * @author Kate Arzamastseva * @param string $image filename of the current image * @param string $selected_tab opened tab */ function media_tabs_details($image, $selected_tab = '') { global $lang, $conf; $tabs = []; $tabs['view'] = [ 'href' => media_managerURL(['tab_details' => 'view'], '&'), 'caption' => $lang['media_viewtab'] ]; [, $mime] = mimetype($image); if ($mime == 'image/jpeg' && file_exists(mediaFN($image))) { $tabs['edit'] = [ 'href' => media_managerURL(['tab_details' => 'edit'], '&'), 'caption' => $lang['media_edittab'] ]; } if ($conf['mediarevisions']) { $tabs['history'] = [ 'href' => media_managerURL(['tab_details' => 'history'], '&'), 'caption' => $lang['media_historytab'] ]; } html_tabs($tabs, $selected_tab); } /** * Prints options for the tab that displays a list of all files * * @author Kate Arzamastseva */ function media_tab_files_options() { global $lang; global $INPUT; global $ID; $form = new Form([ 'method' => 'get', 'action' => wl($ID), 'class' => 'options' ]); $form->addTagOpen('div')->addClass('no'); $form->setHiddenField('sectok', null); $media_manager_params = media_managerURL([], '', false, true); foreach ($media_manager_params as $pKey => $pVal) { $form->setHiddenField($pKey, $pVal); } if ($INPUT->has('q')) { $form->setHiddenField('q', $INPUT->str('q')); } $form->addHTML('

'); foreach ($content[1] as $option) { $attrs = []; if ($checked == $option) { $attrs['checked'] = 'checked'; } $radio = $form->addRadioButton( $group . '_dwmedia', $lang['media_' . $group . '_' . $option] )->val($option)->id($content[0] . '__' . $option)->addClass($option); $radio->attrs($attrs); } $form->addHTML('
'); $form->addButton('', $lang['btn_apply'])->attr('type', 'submit'); $form->addHTML('

' . NL); $form->addTagClose('div'); echo $form->toHTML(); } /** * Returns type of sorting for the list of files in media manager * * @author Kate Arzamastseva * * @return string - sort type */ function _media_get_sort_type() { return _media_get_display_param('sort', ['default' => 'name', 'date']); } /** * Returns type of listing for the list of files in media manager * * @author Kate Arzamastseva * * @return string - list type */ function _media_get_list_type() { return _media_get_display_param('list', ['default' => 'thumbs', 'rows']); } /** * Get display parameters * * @param string $param name of parameter * @param array $values allowed values, where default value has index key 'default' * @return string the parameter value */ function _media_get_display_param($param, $values) { global $INPUT; if (in_array($INPUT->str($param), $values)) { // FIXME: Set cookie return $INPUT->str($param); } else { $val = get_doku_pref($param, $values['default']); if (!in_array($val, $values)) { $val = $values['default']; } return $val; } } /** * Prints tab that displays a list of all files * * @author Kate Arzamastseva * * @param string $ns * @param null|int $auth permission level * @param string $jump item id */ function media_tab_files($ns, $auth = null, $jump = '') { global $lang; if (is_null($auth)) $auth = auth_quickaclcheck("$ns:*"); if ($auth < AUTH_READ) { echo '

' . $lang['media_perm_read'] . '

' . NL; } else { media_filelist($ns, $auth, $jump, true, _media_get_sort_type()); } } /** * Prints tab that displays uploading form * * @author Kate Arzamastseva * * @param string $ns * @param null|int $auth permission level * @param string $jump item id */ function media_tab_upload($ns, $auth = null, $jump = '') { global $lang; if (is_null($auth)) $auth = auth_quickaclcheck("$ns:*"); echo '

' . NL; if ($auth >= AUTH_UPLOAD) { echo '

' . $lang['mediaupload'] . '

'; } media_uploadform($ns, $auth, true); echo '

' . NL; } /** * Prints tab that displays search form * * @author Kate Arzamastseva * * @param string $ns * @param null|int $auth permission level */ function media_tab_search($ns, $auth = null) { global $INPUT; $do = $INPUT->str('mediado'); $query = $INPUT->str('q'); echo '

' . NL; media_searchform($ns, $query, true); if ($do == 'searchlist' || $query) { media_searchlist($query, $ns, $auth, true, _media_get_sort_type()); } echo '

' . NL; } /** * Prints tab that displays mediafile details * * @author Kate Arzamastseva * * @param string $image media id * @param string $ns * @param null|int $auth permission level * @param string|int $rev revision timestamp or empty string */ function media_tab_view($image, $ns, $auth = null, $rev = '') { global $lang; if (is_null($auth)) $auth = auth_quickaclcheck("$ns:*"); if ($image && $auth >= AUTH_READ) { $meta = new JpegMeta(mediaFN($image, $rev)); media_preview($image, $auth, $rev, $meta); media_preview_buttons($image, $auth, $rev); media_details($image, $auth, $rev, $meta); } else { echo '

' . $lang['media_perm_read'] . '

' . NL; } } /** * Prints tab that displays form for editing mediafile metadata * * @author Kate Arzamastseva * * @param string $image media id * @param string $ns * @param null|int $auth permission level */ function media_tab_edit($image, $ns, $auth = null) { if (is_null($auth)) $auth = auth_quickaclcheck("$ns:*"); if ($image) { [, $mime] = mimetype($image); if ($mime == 'image/jpeg') media_metaform($image, $auth); } } /** * Prints tab that displays mediafile revisions * * @author Kate Arzamastseva * * @param string $image media id * @param string $ns * @param null|int $auth permission level */ function media_tab_history($image, $ns, $auth = null) { global $lang; global $INPUT; if (is_null($auth)) $auth = auth_quickaclcheck("$ns:*"); $do = $INPUT->str('mediado'); if ($auth >= AUTH_READ && $image) { if ($do == 'diff') { (new MediaDiff($image))->show(); //media_diff($image, $ns, $auth); } else { $first = $INPUT->int('first', -1); (new MediaRevisions($image))->show($first); } } else { echo '

' . $lang['media_perm_read'] . '

' . NL; } } /** * Prints mediafile details * * @param string $image media id * @param int $auth permission level * @param int|string $rev revision timestamp or empty string * @param JpegMeta|bool $meta * * @author Kate Arzamastseva */ function media_preview($image, $auth, $rev = '', $meta = false) { $size = media_image_preview_size($image, $rev, $meta); if ($size) { global $lang; echo '

'; $more = []; if ($rev) { $more['rev'] = $rev; } else { $t = @filemtime(mediaFN($image)); $more['t'] = $t; } $more['w'] = $size[0]; $more['h'] = $size[1]; $src = ml($image, $more); echo ''; echo '

'; echo ''; echo '

'; } } /** * Prints mediafile action buttons * * @author Kate Arzamastseva * * @param string $image media id * @param int $auth permission level * @param int|string $rev revision timestamp, or empty string */ function media_preview_buttons($image, $auth, $rev = '') { global $lang, $conf; echo '

'; echo $form->toHTML(); echo '
'; echo $form->toHTML(); echo '
'; echo $form->toHTML(); echo '

'; } /** * Returns image width and height for mediamanager preview panel * * @author Kate Arzamastseva * @param string $image * @param int|string $rev * @param JpegMeta|bool $meta * @param int $size * @return array */ function media_image_preview_size($image, $rev, $meta = false, $size = 500) { if ( !preg_match("/\.(jpe?g|gif|png)$/", $image) || !file_exists($filename = mediaFN($image, $rev)) ) return []; $info = getimagesize($filename); $w = $info[0]; $h = $info[1]; if ($meta && ($w > $size || $h > $size)) { $ratio = $meta->getResizeRatio($size, $size); $w = floor($w * $ratio); $h = floor($h * $ratio); } return [$w, $h]; } /** * Returns the requested EXIF/IPTC tag from the image meta * * @author Kate Arzamastseva * * @param array $tags array with tags, first existing is returned * @param JpegMeta $meta * @param string $alt alternative value * @return string */ function media_getTag($tags, $meta = false, $alt = '') { if (!$meta) return $alt; $info = $meta->getField($tags); if (!$info) return $alt; return $info; } /** * Returns mediafile tags * * @author Kate Arzamastseva * * @param JpegMeta $meta * @return array list of tags of the mediafile */ function media_file_tags($meta) { // load the field descriptions static $fields = null; if (is_null($fields)) { $config_files = getConfigFiles('mediameta'); foreach ($config_files as $config_file) { if (file_exists($config_file)) include($config_file); } } $tags = []; foreach ($fields as $tag) { $t = []; if (!empty($tag[0])) $t = [$tag[0]]; if (isset($tag[3]) && is_array($tag[3])) $t = array_merge($t, $tag[3]); $value = media_getTag($t, $meta); $tags[] = ['tag' => $tag, 'value' => $value]; } return $tags; } /** * Prints mediafile tags * * @author Kate Arzamastseva * * @param string $image image id * @param int $auth permission level * @param string|int $rev revision timestamp, or empty string * @param bool|JpegMeta $meta image object, or create one if false */ function media_details($image, $auth, $rev = '', $meta = false) { global $lang; if (!$meta) $meta = new JpegMeta(mediaFN($image, $rev)); $tags = media_file_tags($meta); echo '

' . $lang[$tag['tag'][1]] . ': '; if ($tag['tag'][2] == 'date') echo dformat($value); else echo hsc($value); echo '

' . NL; echo '

' . $lang['reference'] . ':: ' . html_wikilink($path) . '; ' . $lang['nothingfound'] . '

' . NL; } /** * Shows difference between two revisions of file * * @author Kate Arzamastseva * * @param string $image image id * @param string $ns * @param int $auth permission level * @param bool $fromajax * * @deprecated 2020-12-31 */ function media_diff($image, $ns, $auth, $fromajax = false) { dbg_deprecated('see ' . MediaDiff::class . '::show()'); } /** * Callback for media file diff * * @param array $data event data * * @deprecated 2020-12-31 */ function _media_file_diff($data) { dbg_deprecated('see ' . MediaDiff::class . '::show()'); } /** * Shows difference between two revisions of image * * @author Kate Arzamastseva * * @param string $image * @param string|int $l_rev revision timestamp, or empty string * @param string|int $r_rev revision timestamp, or empty string * @param string $ns * @param int $auth permission level * @param bool $fromajax * @deprecated 2020-12-31 */ function media_file_diff($image, $l_rev, $r_rev, $ns, $auth, $fromajax) { dbg_deprecated('see ' . MediaDiff::class . '::showFileDiff()'); } /** * Prints two images side by side * and slider * * @author Kate Arzamastseva * * @param string $image image id * @param int $l_rev revision timestamp, or empty string * @param int $r_rev revision timestamp, or empty string * @param array $l_size array with width and height * @param array $r_size array with width and height * @param string $type * @deprecated 2020-12-31 */ function media_image_diff($image, $l_rev, $r_rev, $l_size, $r_size, $type) { dbg_deprecated('see ' . MediaDiff::class . '::showImageDiff()'); } /** * Restores an old revision of a media file * * @param string $image media id * @param int $rev revision timestamp or empty string * @param int $auth * @return string - file's id * * @author Kate Arzamastseva */ function media_restore($image, $rev, $auth) { global $conf; if ($auth < AUTH_UPLOAD || !$conf['mediarevisions']) return false; $removed = (!file_exists(mediaFN($image)) && file_exists(mediaMetaFN($image, '.changes'))); if (!$image || (!file_exists(mediaFN($image)) && !$removed)) return false; if (!$rev || !file_exists(mediaFN($image, $rev))) return false; [, $imime, ] = mimetype($image); $res = media_upload_finish( mediaFN($image, $rev), mediaFN($image), $image, $imime, true, 'copy' ); if (is_array($res)) { msg($res[0], $res[1]); return false; } return $res; } /** * List all files found by the search request * * @author Tobias Sarnowski * @author Andreas Gohr * @author Kate Arzamastseva * @triggers MEDIA_SEARCH * * @param string $query * @param string $ns * @param null|int $auth * @param bool $fullscreen * @param string $sort */ function media_searchlist($query, $ns, $auth = null, $fullscreen = false, $sort = 'natural') { global $conf; global $lang; $ns = cleanID($ns); $evdata = [ 'ns' => $ns, 'data' => [], 'query' => $query ]; if (!blank($query)) { $evt = new Event('MEDIA_SEARCH', $evdata); if ($evt->advise_before()) { $dir = utf8_encodeFN(str_replace(':', '/', $evdata['ns'])); $quoted = preg_quote($evdata['query'], '/'); //apply globbing $quoted = str_replace(['\*', '\?'], ['.*', '.'], $quoted, $count); //if we use globbing file name must match entirely but may be preceded by arbitrary namespace if ($count > 0) $quoted = '^([^:]*:)*' . $quoted . '$'; $pattern = '/' . $quoted . '/i'; search( $evdata['data'], $conf['mediadir'], 'search_mediafiles', ['showmsg' => false, 'pattern' => $pattern], $dir, 1, $sort ); } $evt->advise_after(); unset($evt); } if (!$fullscreen) { echo '

' . sprintf($lang['searchmedia_in'], hsc($ns) . ':*') . '

' . NL; media_searchform($ns, $query); } if (!count($evdata['data'])) { echo '

' . $lang['nothingfound'] . '

' . NL; } else { if ($fullscreen) { echo '

'; $display->show(); echo '

' . NL; } } /** * Display a media icon * * @param string $filename media id * @param string $size the size subfolder, if not specified 16x16 is used * @return string html */ function media_printicon($filename, $size = '') { [$ext] = mimetype(mediaFN($filename), false); if (file_exists(DOKU_INC . 'lib/images/fileicons/' . $size . '/' . $ext . '.png')) { $icon = DOKU_BASE . 'lib/images/fileicons/' . $size . '/' . $ext . '.png'; } else { $icon = DOKU_BASE . 'lib/images/fileicons/' . $size . '/file.png'; } return '

'; } /** * Build link based on the current, adding/rewriting parameters * * @author Kate Arzamastseva * * @param array|bool $params * @param string $amp separator * @param bool $abs absolute url? * @param bool $params_array return the parmeters array? * @return string|array - link or link parameters */ function media_managerURL($params = false, $amp = '&', $abs = false, $params_array = false) { global $ID; global $INPUT; $gets = ['do' => 'media']; $media_manager_params = ['tab_files', 'tab_details', 'image', 'ns', 'list', 'sort']; foreach ($media_manager_params as $x) { if ($INPUT->has($x)) $gets[$x] = $INPUT->str($x); } if ($params) { $gets = $params + $gets; } unset($gets['id']); if (isset($gets['delete'])) { unset($gets['image']); unset($gets['tab_details']); } if ($params_array) return $gets; return wl($ID, $gets, $abs, $amp); } /** * Print the media upload form if permissions are correct * * @author Andreas Gohr * @author Kate Arzamastseva * * @param string $ns * @param int $auth permission level * @param bool $fullscreen */ function media_uploadform($ns, $auth, $fullscreen = false) { global $lang; global $conf; global $INPUT; if ($auth < AUTH_UPLOAD) { echo '

' . $lang['media_perm_upload'] . '

' . NL; return; } $auth_ow = (($conf['mediarevisions']) ? AUTH_UPLOAD : AUTH_DELETE); $update = false; $id = ''; if ($auth >= $auth_ow && $fullscreen && $INPUT->str('mediado') == 'update') { $update = true; $id = cleanID($INPUT->str('image')); } // The default HTML upload form $form = new Form([ 'id' => 'dw__upload', 'enctype' => 'multipart/form-data', 'action' => ($fullscreen) ? media_managerURL(['tab_files' => 'files', 'tab_details' => 'view'], '&') : DOKU_BASE . 'lib/exe/mediamanager.php', ]); $form->addTagOpen('div')->addClass('no'); $form->setHiddenField('ns', hsc($ns)); // FIXME hsc required? $form->addTagOpen('p'); $form->addTextInput('upload', $lang['txt_upload'])->id('upload__file') ->attrs(['type' => 'file']); $form->addTagClose('p'); $form->addTagOpen('p'); $form->addTextInput('mediaid', $lang['txt_filename'])->id('upload__name') ->val(noNS($id)); $form->addButton('', $lang['btn_upload'])->attr('type', 'submit'); $form->addTagClose('p'); if ($auth >= $auth_ow) { $form->addTagOpen('p'); $attrs = []; if ($update) $attrs['checked'] = 'checked'; $form->addCheckbox('ow', $lang['txt_overwrt'])->id('dw__ow')->val('1') ->addClass('check')->attrs($attrs); $form->addTagClose('p'); } $form->addTagClose('div'); if (!$fullscreen) { echo '

' . $lang['mediaupload'] . '

' . DOKU_LF; } else { echo DOKU_LF; } echo '

' . DOKU_LF; echo $form->toHTML('Upload'); echo '

' . DOKU_LF; echo '

'; printf($lang['maxuploadsize'], filesize_h(media_getuploadsize())); echo ' ' . $lang['allowedmime'] . ''; echo ' ' . implode(', ', array_keys(getMimeTypes())) . ''; echo '

' . DOKU_LF; } /** * Returns the size uploaded files may have * * This uses a conservative approach using the lowest number found * in any of the limiting ini settings * * @returns int size in bytes */ function media_getuploadsize() { $okay = 0; $post = php_to_byte(@ini_get('post_max_size')); $suho = php_to_byte(@ini_get('suhosin.post.max_value_length')); $upld = php_to_byte(@ini_get('upload_max_filesize')); if ($post && ($post < $okay || $okay === 0)) $okay = $post; if ($suho && ($suho < $okay || $okay == 0)) $okay = $suho; if ($upld && ($upld < $okay || $okay == 0)) $okay = $upld; return $okay; } /** * Print the search field form * * @author Tobias Sarnowski * @author Kate Arzamastseva * * @param string $ns * @param string $query * @param bool $fullscreen */ function media_searchform($ns, $query = '', $fullscreen = false) { global $lang; // The default HTML search form $form = new Form([ 'id' => 'dw__mediasearch', 'action' => ($fullscreen) ? media_managerURL([], '&') : DOKU_BASE . 'lib/exe/mediamanager.php', ]); $form->addTagOpen('div')->addClass('no'); $form->setHiddenField('ns', $ns); $form->setHiddenField($fullscreen ? 'mediado' : 'do', 'searchlist'); $form->addTagOpen('p'); $form->addTextInput('q', $lang['searchmedia']) ->attr('title', sprintf($lang['searchmedia_in'], hsc($ns) . ':*')) ->val($query); $form->addHTML(' '); $form->addButton('', $lang['btn_search'])->attr('type', 'submit'); $form->addTagClose('p'); $form->addTagClose('div'); echo $form->toHTML('SearchMedia'); } /** * Build a tree outline of available media namespaces * * @author Andreas Gohr * * @param string $ns */ function media_nstree($ns) { global $conf; global $lang; // currently selected namespace $ns = cleanID($ns); if (empty($ns)) { global $ID; $ns = (string)getNS($ID); } $ns_dir = utf8_encodeFN(str_replace(':', '/', $ns)); $data = []; search($data, $conf['mediadir'], 'search_index', ['ns' => $ns_dir, 'nofiles' => true]); // wrap a list with the root level around the other namespaces array_unshift($data, ['level' => 0, 'id' => '', 'open' => 'true', 'label' => '[' . $lang['mediaroot'] . ']']); // insert the current ns into the hierarchy if it isn't already part of it $ns_parts = explode(':', $ns); $tmp_ns = ''; $pos = 0; foreach ($ns_parts as $level => $part) { if ($tmp_ns) $tmp_ns .= ':' . $part; else $tmp_ns = $part; // find the namespace parts or insert them while ($data[$pos]['id'] != $tmp_ns) { if ( $pos >= count($data) || ($data[$pos]['level'] <= $level + 1 && Sort::strcmp($data[$pos]['id'], $tmp_ns) > 0) ) { array_splice($data, $pos, 0, [['level' => $level + 1, 'id' => $tmp_ns, 'open' => 'true']]); break; } ++$pos; } } echo html_buildlist($data, 'idx', 'media_nstree_item', 'media_nstree_li'); } /** * Userfunction for html_buildlist * * Prints a media namespace tree item * * @author Andreas Gohr * * @param array $item * @return string html */ function media_nstree_item($item) { global $INPUT; $pos = strrpos($item['id'], ':'); $label = substr($item['id'], $pos > 0 ? $pos + 1 : 0); if (empty($item['label'])) $item['label'] = $label; $ret = ''; if ($INPUT->str('do') != 'media') $ret .= ''; else $ret .= ''; $ret .= $item['label']; $ret .= ''; return $ret; } /** * Userfunction for html_buildlist * * Prints a media namespace tree item opener * * @author Andreas Gohr * * @param array $item * @return string html */ function media_nstree_li($item) { $class = 'media level' . $item['level']; if ($item['open']) { $class .= ' open'; $img = DOKU_BASE . 'lib/images/minus.gif'; $alt = '−'; } else { $class .= ' closed'; $img = DOKU_BASE . 'lib/images/plus.gif'; $alt = '+'; } // TODO: only deliver an image if it actually has a subtree... return '

' . ' ' . $alt . '

'; } /** * Resizes or crop the given image to the given size * * @author Andreas Gohr * * @param string $file filename, path to file * @param string $ext extension * @param int $w desired width * @param int $h desired height * @param bool $crop should a center crop be used? * @return string path to resized or original size if failed */ function media_mod_image($file, $ext, $w, $h = 0, $crop = false) { global $conf; if (!$h) $h = 0; // we wont scale up to infinity if ($w > 2000 || $h > 2000) return $file; $operation = $crop ? 'crop' : 'resize'; $options = [ 'quality' => $conf['jpg_quality'], 'imconvert' => $conf['im_convert'], ]; $cache = new CacheImageMod($file, $w, $h, $ext, $crop); if (!$cache->useCache()) { try { Slika::run($file, $options) ->autorotate() ->$operation($w, $h) ->save($cache->cache, $ext); if ($conf['fperm']) @chmod($cache->cache, $conf['fperm']); } catch (Exception $e) { Logger::debug($e->getMessage()); return $file; } } return $cache->cache; } /** * Resizes the given image to the given size * * @author Andreas Gohr * * @param string $file filename, path to file * @param string $ext extension * @param int $w desired width * @param int $h desired height * @return string path to resized or original size if failed */ function media_resize_image($file, $ext, $w, $h = 0) { return media_mod_image($file, $ext, $w, $h, false); } /** * Center crops the given image to the wanted size * * @author Andreas Gohr * * @param string $file filename, path to file * @param string $ext extension * @param int $w desired width * @param int $h desired height * @return string path to resized or original size if failed */ function media_crop_image($file, $ext, $w, $h = 0) { return media_mod_image($file, $ext, $w, $h, true); } /** * Calculate a token to be used to verify fetch requests for resized or * cropped images have been internally generated - and prevent external * DDOS attacks via fetch * * @author Christopher Smith * * @param string $id id of the image * @param int $w resize/crop width * @param int $h resize/crop height * @return string token or empty string if no token required */ function media_get_token($id, $w, $h) { // token is only required for modified images if ($w || $h || media_isexternal($id)) { $token = $id; if ($w) $token .= '.' . $w; if ($h) $token .= '.' . $h; return substr(PassHash::hmac('md5', $token, auth_cookiesalt()), 0, 6); } return ''; } /** * Download a remote file and return local filename * * returns false if download fails. Uses cached file if available and * wanted * * @author Andreas Gohr * @author Pavel Vitis * * @param string $url * @param string $ext extension * @param int $cache cachetime in seconds * @return false|string path to cached file */ function media_get_from_URL($url, $ext, $cache) { global $conf; // if no cache or fetchsize just redirect if ($cache == 0) return false; if (!$conf['fetchsize']) return false; $local = getCacheName(strtolower($url), ".media.$ext"); $mtime = @filemtime($local); // 0 if not exists //decide if download needed: if ( ($mtime == 0) || // cache does not exist ($cache != -1 && $mtime < time() - $cache) // 'recache' and cache has expired ) { if (media_image_download($url, $local)) { return $local; } else { return false; } } //if cache exists use it else if ($mtime) return $local; //else return false return false; } /** * Download image files * * @author Andreas Gohr * * @param string $url * @param string $file path to file in which to put the downloaded content * @return bool */ function media_image_download($url, $file) { global $conf; $http = new DokuHTTPClient(); $http->keep_alive = false; // we do single ops here, no need for keep-alive $http->max_bodysize = $conf['fetchsize']; $http->timeout = 25; //max. 25 sec $http->header_regexp = '!\r\nContent-Type: image/(jpe?g|gif|png)!i'; $data = $http->get($url); if (!$data) return false; $fileexists = file_exists($file); $fp = @fopen($file, "w"); if (!$fp) return false; fwrite($fp, $data); fclose($fp); if (!$fileexists && $conf['fperm']) chmod($file, $conf['fperm']); // check if it is really an image $info = @getimagesize($file); if (!$info) { @unlink($file); return false; } return true; } /** * resize images using external ImageMagick convert program * * @author Pavel Vitis * @author Andreas Gohr * * @param string $ext extension * @param string $from filename path to file * @param int $from_w original width * @param int $from_h original height * @param string $to path to resized file * @param int $to_w desired width * @param int $to_h desired height * @return bool */ function media_resize_imageIM($ext, $from, $from_w, $from_h, $to, $to_w, $to_h) { global $conf; // check if convert is configured if (!$conf['im_convert']) return false; // prepare command $cmd = $conf['im_convert']; $cmd .= ' -resize ' . $to_w . 'x' . $to_h . '!'; if ($ext == 'jpg' || $ext == 'jpeg') { $cmd .= ' -quality ' . $conf['jpg_quality']; } $cmd .= " $from $to"; @exec($cmd, $out, $retval); if ($retval == 0) return true; return false; } /** * crop images using external ImageMagick convert program * * @author Andreas Gohr * * @param string $ext extension * @param string $from filename path to file * @param int $from_w original width * @param int $from_h original height * @param string $to path to resized file * @param int $to_w desired width * @param int $to_h desired height * @param int $ofs_x offset of crop centre * @param int $ofs_y offset of crop centre * @return bool * @deprecated 2020-09-01 */ function media_crop_imageIM($ext, $from, $from_w, $from_h, $to, $to_w, $to_h, $ofs_x, $ofs_y) { global $conf; dbg_deprecated('splitbrain\\Slika'); // check if convert is configured if (!$conf['im_convert']) return false; // prepare command $cmd = $conf['im_convert']; $cmd .= ' -crop ' . $to_w . 'x' . $to_h . '+' . $ofs_x . '+' . $ofs_y; if ($ext == 'jpg' || $ext == 'jpeg') { $cmd .= ' -quality ' . $conf['jpg_quality']; } $cmd .= " $from $to"; @exec($cmd, $out, $retval); if ($retval == 0) return true; return false; } /** * resize or crop images using PHP's libGD support * * @author Andreas Gohr * @author Sebastian Wienecke * * @param string $ext extension * @param string $from filename path to file * @param int $from_w original width * @param int $from_h original height * @param string $to path to resized file * @param int $to_w desired width * @param int $to_h desired height * @param int $ofs_x offset of crop centre * @param int $ofs_y offset of crop centre * @return bool * @deprecated 2020-09-01 */ function media_resize_imageGD($ext, $from, $from_w, $from_h, $to, $to_w, $to_h, $ofs_x = 0, $ofs_y = 0) { global $conf; dbg_deprecated('splitbrain\\Slika'); if ($conf['gdlib'] < 1) return false; //no GDlib available or wanted // check available memory if (!is_mem_available(($from_w * $from_h * 4) + ($to_w * $to_h * 4))) { return false; } // create an image of the given filetype $image = false; if ($ext == 'jpg' || $ext == 'jpeg') { if (!function_exists("imagecreatefromjpeg")) return false; $image = @imagecreatefromjpeg($from); } elseif ($ext == 'png') { if (!function_exists("imagecreatefrompng")) return false; $image = @imagecreatefrompng($from); } elseif ($ext == 'gif') { if (!function_exists("imagecreatefromgif")) return false; $image = @imagecreatefromgif($from); } if (!$image) return false; $newimg = false; if (($conf['gdlib'] > 1) && function_exists("imagecreatetruecolor") && $ext != 'gif') { $newimg = @imagecreatetruecolor($to_w, $to_h); } if (!$newimg) $newimg = @imagecreate($to_w, $to_h); if (!$newimg) { imagedestroy($image); return false; } //keep png alpha channel if possible if ($ext == 'png' && $conf['gdlib'] > 1 && function_exists('imagesavealpha')) { imagealphablending($newimg, false); imagesavealpha($newimg, true); } //keep gif transparent color if possible if ($ext == 'gif' && function_exists('imagefill') && function_exists('imagecolorallocate')) { if (function_exists('imagecolorsforindex') && function_exists('imagecolortransparent')) { $transcolorindex = @imagecolortransparent($image); if ($transcolorindex >= 0) { //transparent color exists $transcolor = @imagecolorsforindex($image, $transcolorindex); $transcolorindex = @imagecolorallocate( $newimg, $transcolor['red'], $transcolor['green'], $transcolor['blue'] ); @imagefill($newimg, 0, 0, $transcolorindex); @imagecolortransparent($newimg, $transcolorindex); } else { //filling with white $whitecolorindex = @imagecolorallocate($newimg, 255, 255, 255); @imagefill($newimg, 0, 0, $whitecolorindex); } } else { //filling with white $whitecolorindex = @imagecolorallocate($newimg, 255, 255, 255); @imagefill($newimg, 0, 0, $whitecolorindex); } } //try resampling first if (function_exists("imagecopyresampled")) { if (!@imagecopyresampled($newimg, $image, 0, 0, $ofs_x, $ofs_y, $to_w, $to_h, $from_w, $from_h)) { imagecopyresized($newimg, $image, 0, 0, $ofs_x, $ofs_y, $to_w, $to_h, $from_w, $from_h); } } else { imagecopyresized($newimg, $image, 0, 0, $ofs_x, $ofs_y, $to_w, $to_h, $from_w, $from_h); } $okay = false; if ($ext == 'jpg' || $ext == 'jpeg') { if (!function_exists('imagejpeg')) { $okay = false; } else { $okay = imagejpeg($newimg, $to, $conf['jpg_quality']); } } elseif ($ext == 'png') { if (!function_exists('imagepng')) { $okay = false; } else { $okay = imagepng($newimg, $to); } } elseif ($ext == 'gif') { if (!function_exists('imagegif')) { $okay = false; } else { $okay = imagegif($newimg, $to); } } // destroy GD image resources imagedestroy($image); imagedestroy($newimg); return $okay; } /** * Return other media files with the same base name * but different extensions. * * @param string $src - ID of media file * @param string[] $exts - alternative extensions to find other files for * @return array - array(mime type => file ID) * * @author Anika Henke */ function media_alternativefiles($src, $exts) { $files = []; [$srcExt, /* srcMime */] = mimetype($src); $filebase = substr($src, 0, -1 * (strlen($srcExt) + 1)); foreach ($exts as $ext) { $fileid = $filebase . '.' . $ext; $file = mediaFN($fileid); if (file_exists($file)) { [/* fileExt */, $fileMime] = mimetype($file); $files[$fileMime] = $fileid; } } return $files; } /** * Check if video/audio is supported to be embedded. * * @param string $mime - mimetype of media file * @param string $type - type of media files to check ('video', 'audio', or null for all) * @return boolean * * @author Anika Henke */ function media_supportedav($mime, $type = null) { $supportedAudio = [ 'ogg' => 'audio/ogg', 'mp3' => 'audio/mpeg', 'wav' => 'audio/wav' ]; $supportedVideo = [ 'webm' => 'video/webm', 'ogv' => 'video/ogg', 'mp4' => 'video/mp4' ]; if ($type == 'audio') { $supportedAv = $supportedAudio; } elseif ($type == 'video') { $supportedAv = $supportedVideo; } else { $supportedAv = array_merge($supportedAudio, $supportedVideo); } return in_array($mime, $supportedAv); } /** * Return track media files with the same base name * but extensions that indicate kind and lang. * ie for foo.webm search foo.sub.lang.vtt, foo.cap.lang.vtt... * * @param string $src - ID of media file * @return array - array(mediaID => array( kind, srclang )) * * @author Schplurtz le Déboulonné */ function media_trackfiles($src) { $kinds = [ 'sub' => 'subtitles', 'cap' => 'captions', 'des' => 'descriptions', 'cha' => 'chapters', 'met' => 'metadata' ]; $files = []; $re = '/\\.(sub|cap|des|cha|met)\\.([^.]+)\\.vtt$/'; $baseid = pathinfo($src, PATHINFO_FILENAME); $pattern = mediaFN($baseid) . '.*.*.vtt'; $list = glob($pattern); foreach ($list as $track) { if (preg_match($re, $track, $matches)) { $files[$baseid . '.' . $matches[1] . '.' . $matches[2] . '.vtt'] = [$kinds[$matches[1]], $matches[2]]; } } return $files; } /* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */

' . $lang['reference'] . ' ' . hsc(noNS($id)) . '

:' . hsc($ns) . '

' . sprintf($lang['searchmedia_in'], hsc($ns) . ':*') . '

' . $lang['reference'] . ' `' . hsc(noNS($id)) . '`