1 <?php
2 /*
3 * This code is part of GOsa (http://www.gosa-project.org)
4 * Copyright (C) 2003-2008 GONICUS GmbH
5 *
6 * ID: $$Id$$
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 */
23 class filter {
25 var $xmlData;
26 var $elements= array();
27 var $elementValues= array();
28 var $alphabetElements= array();
29 var $autocompleter= array();
30 var $category= "";
31 var $objectStorage= array();
32 var $base= "";
33 var $scope= "";
34 var $query;
35 var $initial= false;
36 var $scopeMode= "auto";
37 var $alphabet= null;
38 var $converter= array();
39 var $pid;
42 function filter($filename)
43 {
44 global $config;
46 // Load eventually passed filename
47 if (!$this->load($filename)) {
48 die("Cannot parse $filename!");
49 }
51 $this->pid= preg_replace("/[^0-9]/", "", microtime(TRUE));
52 }
55 function load($filename)
56 {
57 $contents = file_get_contents($filename);
58 $this->xmlData= xml::xml2array($contents, 1);
60 if (!isset($this->xmlData['filterdef'])) {
61 return false;
62 }
64 $this->xmlData= $this->xmlData["filterdef"];
66 // Load filter
67 if (isset($this->xmlData['search'])) {
68 if (!isset($this->xmlData['search']['query'][0])){
69 $this->xmlData['search']['query']= array($this->xmlData['search']['query']);
70 }
72 // Move information
73 $entry= $this->xmlData['search'];
74 $this->scopeMode= $entry['scope'];
75 if ($entry['scope'] == "auto") {
76 $this->scope= "one";
77 } else {
78 $this->scope= $entry['scope'];
79 }
80 $this->query= $entry['query'];
81 } else {
82 return false;
83 }
85 // Transfer initial value
86 if (isset($this->xmlData['definition']['initial']) && $this->xmlData['definition']['initial'] == "true"){
87 $this->initial= true;
88 }
90 // Transfer category
91 if (isset($this->xmlData['definition']['category'])){
92 $this->category= $this->xmlData['definition']['category'];
93 }
95 // Generate formular data
96 if (isset($this->xmlData['element'])) {
97 if (!isset($this->xmlData['element'][0])){
98 $this->xmlData['element']= array($this->xmlData['element']);
99 }
100 foreach ($this->xmlData['element'] as $element) {
102 // Ignore elements without type
103 if (!isset($element['type']) || !isset($element['tag'])) {
104 next;
105 }
107 $tag= $element['tag'];
109 // Fix arrays
110 if (isset($element['value']) && !isset($element['value'][0])) {
111 $element['value']= array($element['value']);
112 }
114 // Store element for quick access
115 $this->elements[$tag] = $element;
117 // Preset elementValues with default values if exist
118 if (isset($element['default']) && !is_array($element['default'])) {
119 $this->elementValues[$tag] = $element['default'];
120 } else {
121 $this->elementValues[$tag] = "";
122 }
124 // Does this element react on alphabet links?
125 if (isset($element['alphabet']) && $element['alphabet'] == "true") {
126 $this->alphabetElements[]= $tag;
127 }
128 }
130 // Sort elements for element length to allow proper replacing later on
131 function strlenSort($a, $b) {
132 if (strlen($a['tag']) == strlen($b['tag'])) {
133 return 0;
134 }
135 return (strlen($a['tag']) < strlen($b['tag']) ? -1 : 1);
136 }
137 uasort($this->elements, 'strlenSort');
138 $this->elements= array_reverse($this->elements);
140 }
142 return true;
143 }
146 function getTextfield($element)
147 {
148 $tag= $element['tag'];
149 $size= 30;
150 if (isset($element['size'])){
151 $size= $element['size'];
152 }
153 $maxlength= 30;
154 if (isset($element['maxlength'])){
155 $maxlength= $element['maxlength'];
156 }
157 $result= "<input class='filter_textfield' id='$tag' name='$tag' type='text' size='$size' maxlength='maxlength' value='".$this->elementValues[$tag]."'>";
158 if (isset($element['autocomplete'])) {
159 $frequency= "0.5";
160 $characters= "1";
161 if (isset($element['autocomplete']['frequency'])) {
162 $frequency= $element['autocomplete']['frequency'];
163 }
164 if (isset($element['autocomplete']['characters'])) {
165 $characters= $element['autocomplete']['characters'];
166 }
167 $result.= "<div id='autocomplete$tag' class='autocomplete'></div>".
168 "<script type='text/javascript'>".
169 "new Ajax.Autocompleter('$tag', 'autocomplete$tag', 'autocomplete.php', { minChars: $characters, frequency: $frequency });".
170 "</script>";
172 $this->autocompleters[$tag]= $element['autocomplete'];
173 }
174 return $result;
175 }
178 function getCheckbox($element)
179 {
180 $tag= $element['tag'];
181 $checked= "";
182 if ($this->elementValues[$tag] == "true") {
183 $checked= " checked";
184 }
186 $result= "<input class='filter_checkbox' name='$tag' type='checkbox' onClick='document.mainform.submit();' value='true'$checked>";
187 return $result;
188 }
191 function getCombobox($element)
192 {
193 $result= "<select name='".$element['tag']."' size='1' onClick='document.mainform.submit();'>";
195 // Fill with presets
196 foreach ($element['value'] as $value) {
197 $selected= "";
198 if ($this->elementValues[$element['tag']] == $value['key']) {
199 $selected= " selected";
200 }
202 // Handle translations
203 $result.= "<option value='".$value['key']."'$selected>"._($value['label'])."</option>";
204 }
206 // Use autocompleter for additional data
207 if (isset($element['autocomplete'])) {
208 $list= $this->getCompletitionList($element['autocomplete'], $element['tag']);
209 foreach ($list as $value) {
210 $selected= "";
211 if ($this->elementValues[$element['tag']] == $value) {
212 $selected= " selected";
213 }
214 $result.= "<option value='$value'$selected>$value</option>";
215 }
216 }
218 $result.= "</select>";
220 return $result;
221 }
224 function getCurrentBase()
225 {
226 if (isset($this->search->base) && (string)$this->search->scope != "auto") {
227 return false;
228 }
230 return $this->base;
231 }
234 function getCurrentScope()
235 {
236 if (isset($this->search->scope) && (string)$this->search->scope != "auto") {
237 return (string)$this->search->scope;
238 }
240 return $this->scope;
241 }
244 function setConverter($field, $hook)
245 {
246 $this->converter[$field]= $hook;
247 }
250 function setObjectStorage($storage)
251 {
252 $this->objectStorage= $storage;
253 }
256 function setBase($base)
257 {
258 $this->base= $base;
259 }
262 function setCurrentScope($scope)
263 {
264 $this->scope= $scope;
265 }
268 function renderAlphabet($columns= 10)
269 {
270 // Return pre-rendered alphabet if available
271 if ($this->alphabet) {
272 return ($this->alphabet);
273 }
275 $characters= _("*ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789");
276 $alphabet= "";
277 $c= 0;
279 /* Fill cells with charaters */
280 for ($i= 0, $l= mb_strlen($characters, 'UTF8'); $i<$l; $i++){
281 if ($c == 0){
282 $alphabet.= "<tr>";
283 }
285 $ch = mb_substr($characters, $i, 1, "UTF8");
286 $alphabet.= "<td><a class=\"alphaselect\" href=\"main.php?plug=".
287 validate($_GET['plug'])."&filter=".$ch."\"> ".$ch." </a></td>";
289 if ($c++ == $columns){
290 $alphabet.= "</tr>";
291 $c= 0;
292 }
293 }
295 /* Fill remaining cells */
296 while ($c++ <= $columns){
297 $alphabet.= "<td> </td>";
298 }
300 /* Save alphabet */
301 $this->alphabet= "<table width='100%'>$alphabet</table>";
303 return ($this->alphabet);
304 }
307 function renderApply()
308 {
309 return ("<input type='submit' name='apply' value='"._("Apply filter")."'>");
310 }
313 function renderScope()
314 {
315 $checked= $this->scope == "sub"?" checked":"";
316 return "<input type='checkbox' name='SCOPE' value='1' onClick='document.mainform.submit();'$checked> "._("Search in subtrees");
317 }
320 function render()
321 {
322 $smarty= get_smarty();
323 $smarty->assign("ALPHABET", $this->renderAlphabet());
324 $smarty->assign("APPLY", $this->renderApply());
325 $smarty->assign("SCOPE", $this->renderScope());
327 // Load template and replace elementsHtml[]
328 foreach ($this->elements as $tag => $element) {
329 $htmlCode= "";
330 switch ($element['type']) {
331 case "textfield":
332 $htmlCode = $this->getTextfield($element);
333 break;
335 case "checkbox":
336 $htmlCode = $this->getCheckbox($element);
337 break;
339 case "combobox":
340 $htmlCode = $this->getCombobox($element);
341 break;
343 default:
344 die ("Unknown element type specified!");
345 }
346 $smarty->assign("$tag", $htmlCode);
347 }
349 // Load template
350 return ("<input type='hidden' name='FILTER_PID' value='".$this->pid."'>".$smarty->fetch(get_template_path($this->xmlData['definition']['template'], true)));
351 }
354 function query()
355 {
356 global $class_mapping;
357 $result= array();
359 // Return empty list if initial is not set
360 if (!$this->initial) {
361 $this->initial= true;
362 return $result;
363 }
365 // Go thru all queries and merge results
366 foreach ($this->query as $query) {
367 if (!isset($query['backend']) || !isset($query['filter']) || !isset($query['attribute'])) {
368 die("No backend specified in search config.");
369 }
371 // Is backend available?
372 $backend= "filter".$query['backend'];
373 if (!isset($class_mapping["$backend"])) {
374 die("Invalid backend specified in search config.");
375 }
377 // Load filter and attributes
378 $filter= $query['filter'];
379 $attributes= $query['attribute'];
381 // Generate final filter
382 foreach ($this->elements as $tag => $element) {
383 if (!isset($element['set']) || !isset($element['unset'])) {
384 continue;
385 }
387 // Handle converters if present
388 if (isset($this->converter[$tag])) {
389 preg_match('/([^:]+)::(.*)$/', $this->converter[$tag], $m);
390 $e_set= call_user_func(array($m[1], $m[2]), preg_replace('/\$/', $this->elementValues[$tag], is_array($element['set'])?"":$element['set']));
391 $e_unset= call_user_func(array($m[1], $m[2]), preg_replace('/\$/', $this->elementValues[$tag], is_array($element['unset'])?"":$element['unset']));
392 } else {
393 $e_set= is_array($element['set'])?"":$element['set'];
394 $e_unset= is_array($element['unset'])?"":$element['unset'];
395 }
397 if ($this->elementValues[$tag] == "") {
398 $e_unset= preg_replace('/\$/', normalizeLdap($this->elementValues[$tag]), $e_unset);
399 $filter= preg_replace("/\\$$tag/", $e_unset, $filter);
400 } else {
401 $e_set= preg_replace('/\$/', normalizeLdap($this->elementValues[$tag]), $e_set);
402 $filter= preg_replace("/\\$$tag/", $e_set, $filter);
403 }
404 }
406 $result= array_merge($result, call_user_func(array($backend, 'query'), $this->base, $this->scope, $filter, $attributes, $this->category, $this->objectStorage));
407 }
409 return ($result);
410 }
413 function isValid()
414 {
415 foreach ($this->elements as $tag => $element) {
416 if (isset($element->regex)){
417 if (!preg_match('/'.(string)$element->regex.'/', $this->elementValues[$tag])){
418 return false;
419 }
420 }
421 }
422 return true;
423 }
426 function update()
427 {
429 /* React on alphabet links if needed */
430 if (isset($_GET['filter'])){
431 $s= mb_substr(validate($_GET['filter']), 0, 1, "UTF8")."*";
432 if ($s == "**"){
433 $s= "*";
434 }
435 foreach ($this->alphabetElements as $tag) {
436 $this->elementValues[$tag]= $s;
437 }
438 }
440 if (isset($_POST['FILTER_PID']) && $_POST['FILTER_PID'] == $this->pid) {
441 // Load post values and adapt filter, base and scope accordingly - but
442 // only if we didn't get a _GET
443 foreach ($this->elements as $tag => $element) {
444 if (isset($_POST[$tag])){
445 $this->elementValues[$tag]= validate($_POST[$tag]);
446 } else {
447 $this->elementValues[$tag]= "";
448 }
449 }
451 // Save scope if needed
452 if ($this->scopeMode == "auto") {
453 $this->scope= isset($_POST['SCOPE'])?"sub":"one";
454 }
455 }
457 }
460 function getCompletitionList($config, $tag, $value="*")
461 {
462 global $class_mapping;
463 $res= array();
465 // Is backend available?
466 $backend= "filter".$config['backend'];
467 if (!isset($class_mapping["$backend"])) {
468 die("Invalid backend specified in search config.");
469 }
471 // Load filter and attributes
472 $filter= $config['filter'];
473 $attributes= $config['attribute'];
474 if (!is_array($attributes)) {
475 $attributes= array($attributes);
476 }
478 // Make filter
479 $filter= preg_replace("/\\$$tag/", normalizeLDAP($value), $filter);
480 if (isset($config['base']) && isset($config['scope']) && isset($config['category'])) {
481 $result= call_user_func(array($backend, 'query'), $config['base'], $config['scope'], $filter, $attributes,
482 $config["category"], $config["objectStorage"]);
483 } else {
484 $result= call_user_func(array($backend, 'query'), $this->base, $this->scope, $filter, $attributes,
485 $this->category, $this->objectStorage);
486 }
488 foreach ($result as $entry) {
489 foreach ($attributes as $attribute) {
490 if (is_array($entry[$attribute])) {
491 for ($i= 0; $i<$entry[$attribute]['count']; $i++) {
492 if (mb_stristr($entry[$attribute][$i], $value)) {
493 $res[]= $entry[$attribute][$i];
494 }
495 }
496 } else {
497 $res[]= $entry[$attribute];
498 }
499 }
500 }
502 return $res;
503 }
506 function processAutocomplete()
507 {
508 global $class_mapping;
509 $result= array();
511 // Introduce maximum number of entries
512 $max= 25;
514 foreach ($this->autocompleters as $tag => $config) {
515 if(isset($_POST[$tag])){
516 $result= $this->getCompletitionList($config, $tag, $_POST[$tag]);
517 $result= array_unique($result);
518 asort($result);
520 echo '<ul>';
521 foreach ($result as $entry) {
522 echo '<li>'.$entry.'</li>';
523 if ($max-- == 0) {
524 break;
525 }
526 }
528 echo '</ul>';
529 }
530 }
531 }
534 }
536 ?>