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  1: <?php
  2: 
  3: /**
  4:  * This file is part of the Tracy (https://tracy.nette.org)
  5:  * Copyright (c) 2004 David Grudl (https://davidgrudl.com)
  6:  */
  7: 
  8: namespace Tracy;
  9: 
 10: 
 11: /**
 12:  * Debug Bar.
 13:  */
 14: class Bar
 15: {
 16:     /** @var IBarPanel[] */
 17:     private $panels = [];
 18: 
 19:     /** @var bool  initialized by dispatchAssets() */
 20:     private $useSession = false;
 21: 
 22:     /** @var string|NULL  generated by renderLoader() */
 23:     private $contentId;
 24: 
 25: 
 26:     /**
 27:      * Add custom panel.
 28:      * @param  IBarPanel
 29:      * @param  string
 30:      * @return static
 31:      */
 32:     public function addPanel(IBarPanel $panel, $id = null)
 33:     {
 34:         if ($id === null) {
 35:             $c = 0;
 36:             do {
 37:                 $id = get_class($panel) . ($c++ ? "-$c" : '');
 38:             } while (isset($this->panels[$id]));
 39:         }
 40:         $this->panels[$id] = $panel;
 41:         return $this;
 42:     }
 43: 
 44: 
 45:     /**
 46:      * Returns panel with given id
 47:      * @param  string
 48:      * @return IBarPanel|null
 49:      */
 50:     public function getPanel($id)
 51:     {
 52:         return isset($this->panels[$id]) ? $this->panels[$id] : null;
 53:     }
 54: 
 55: 
 56:     /**
 57:      * Renders loading <script>
 58:      * @return void
 59:      */
 60:     public function renderLoader()
 61:     {
 62:         if (!$this->useSession) {
 63:             throw new \LogicException('Start session before Tracy is enabled.');
 64:         }
 65:         $contentId = $this->contentId = $this->contentId ?: substr(md5(uniqid('', true)), 0, 10);
 66:         $nonce = Helpers::getNonce();
 67:         $async = true;
 68:         require __DIR__ . '/assets/Bar/loader.phtml';
 69:     }
 70: 
 71: 
 72:     /**
 73:      * Renders debug bar.
 74:      * @return void
 75:      */
 76:     public function render()
 77:     {
 78:         $useSession = $this->useSession && session_status() === PHP_SESSION_ACTIVE;
 79:         $redirectQueue = &$_SESSION['_tracy']['redirect'];
 80: 
 81:         foreach (['bar', 'redirect', 'bluescreen'] as $key) {
 82:             $queue = &$_SESSION['_tracy'][$key];
 83:             $queue = array_slice((array) $queue, -10, null, true);
 84:             $queue = array_filter($queue, function ($item) {
 85:                 return isset($item['time']) && $item['time'] > time() - 60;
 86:             });
 87:         }
 88: 
 89:         if (!Helpers::isHtmlMode() && !Helpers::isAjax()) {
 90:             return;
 91: 
 92:         } elseif (Helpers::isAjax()) {
 93:             $rows[] = (object) ['type' => 'ajax', 'panels' => $this->renderPanels('-ajax')];
 94:             $dumps = Dumper::fetchLiveData();
 95:             $contentId = $useSession ? $_SERVER['HTTP_X_TRACY_AJAX'] . '-ajax' : null;
 96: 
 97:         } elseif (preg_match('#^Location:#im', implode("\n", headers_list()))) { // redirect
 98:             Dumper::fetchLiveData();
 99:             Dumper::$livePrefix = count($redirectQueue) . 'p';
100:             $redirectQueue[] = [
101:                 'panels' => $this->renderPanels('-r' . count($redirectQueue)),
102:                 'dumps' => Dumper::fetchLiveData(),
103:                 'time' => time(),
104:             ];
105:             return;
106: 
107:         } else {
108:             $rows[] = (object) ['type' => 'main', 'panels' => $this->renderPanels()];
109:             $dumps = Dumper::fetchLiveData();
110:             foreach (array_reverse((array) $redirectQueue) as $info) {
111:                 $rows[] = (object) ['type' => 'redirect', 'panels' => $info['panels']];
112:                 $dumps += $info['dumps'];
113:             }
114:             $redirectQueue = null;
115:             $contentId = $this->contentId ?: ($useSession ? substr(md5(uniqid('', true)), 0, 10) : null);
116:         }
117: 
118:         ob_start(function () {});
119:         require __DIR__ . '/assets/Bar/panels.phtml';
120:         require __DIR__ . '/assets/Bar/bar.phtml';
121:         $content = Helpers::fixEncoding(ob_get_clean());
122: 
123:         if ($contentId) {
124:             $_SESSION['_tracy']['bar'][$contentId] = ['content' => $content, 'dumps' => $dumps, 'time' => time()];
125:         }
126: 
127:         if (Helpers::isHtmlMode() && !$this->contentId) {
128:             $nonce = Helpers::getNonce();
129:             $async = false;
130:             require __DIR__ . '/assets/Bar/loader.phtml';
131:         }
132:     }
133: 
134: 
135:     /**
136:      * @return array
137:      */
138:     private function renderPanels($suffix = null)
139:     {
140:         set_error_handler(function ($severity, $message, $file, $line) {
141:             if (error_reporting() & $severity) {
142:                 throw new \ErrorException($message, 0, $severity, $file, $line);
143:             }
144:         });
145: 
146:         $obLevel = ob_get_level();
147:         $panels = [];
148: 
149:         foreach ($this->panels as $id => $panel) {
150:             $idHtml = preg_replace('#[^a-z0-9]+#i', '-', $id) . $suffix;
151:             try {
152:                 $tab = (string) $panel->getTab();
153:                 $panelHtml = $tab ? (string) $panel->getPanel() : null;
154:                 if ($tab && $panel instanceof \Nette\Diagnostics\IBarPanel) {
155:                     $e = new \Exception('Support for Nette\Diagnostics\IBarPanel is deprecated');
156:                 }
157: 
158:             } catch (\Exception $e) {
159:             } catch (\Throwable $e) {
160:             }
161:             if (isset($e)) {
162:                 while (ob_get_level() > $obLevel) { // restore ob-level if broken
163:                     ob_end_clean();
164:                 }
165:                 $idHtml = "error-$idHtml";
166:                 $tab = "Error in $id";
167:                 $panelHtml = "<h1>Error: $id</h1><div class='tracy-inner'>" . nl2br(Helpers::escapeHtml($e)) . '</div>';
168:                 unset($e);
169:             }
170:             $panels[] = (object) ['id' => $idHtml, 'tab' => $tab, 'panel' => $panelHtml];
171:         }
172: 
173:         restore_error_handler();
174:         return $panels;
175:     }
176: 
177: 
178:     /**
179:      * Renders debug bar assets.
180:      * @return bool
181:      */
182:     public function dispatchAssets()
183:     {
184:         $asset = isset($_GET['_tracy_bar']) ? $_GET['_tracy_bar'] : null;
185:         if ($asset === 'js') {
186:             header('Content-Type: text/javascript');
187:             header('Cache-Control: max-age=864000');
188:             header_remove('Pragma');
189:             header_remove('Set-Cookie');
190:             $this->renderAssets();
191:             return true;
192:         }
193: 
194:         $this->useSession = session_status() === PHP_SESSION_ACTIVE;
195: 
196:         if ($this->useSession && Helpers::isAjax()) {
197:             header('X-Tracy-Ajax: 1'); // session must be already locked
198:         }
199: 
200:         if ($this->useSession && $asset && preg_match('#^content(-ajax)?.(\w+)$#', $asset, $m)) {
201:             $session = &$_SESSION['_tracy']['bar'][$m[2] . $m[1]];
202:             header('Content-Type: text/javascript');
203:             header('Cache-Control: max-age=60');
204:             header_remove('Set-Cookie');
205:             if (!$m[1]) {
206:                 $this->renderAssets();
207:             }
208:             if ($session) {
209:                 $method = $m[1] ? 'loadAjax' : 'init';
210:                 echo "Tracy.Debug.$method(", json_encode($session['content']), ', ', json_encode($session['dumps']), ');';
211:                 $session = null;
212:             }
213:             $session = &$_SESSION['_tracy']['bluescreen'][$m[2]];
214:             if ($session) {
215:                 echo 'Tracy.BlueScreen.loadAjax(', json_encode($session['content']), ', ', json_encode($session['dumps']), ');';
216:                 $session = null;
217:             }
218:             return true;
219:         }
220:     }
221: 
222: 
223:     private function renderAssets()
224:     {
225:         $css = array_map('file_get_contents', [
226:             __DIR__ . '/assets/Bar/bar.css',
227:             __DIR__ . '/assets/Toggle/toggle.css',
228:             __DIR__ . '/assets/Dumper/dumper.css',
229:             __DIR__ . '/assets/BlueScreen/bluescreen.css',
230:         ]);
231:         $css = json_encode(preg_replace('#\s+#u', ' ', implode($css)));
232:         echo "(function(){var el = document.createElement('style'); el.className='tracy-debug'; el.textContent=$css; document.head.appendChild(el);})();\n";
233: 
234:         array_map('readfile', [
235:             __DIR__ . '/assets/Bar/bar.js',
236:             __DIR__ . '/assets/Toggle/toggle.js',
237:             __DIR__ . '/assets/Dumper/dumper.js',
238:             __DIR__ . '/assets/BlueScreen/bluescreen.js',
239:         ]);
240:     }
241: }
242: 
Nette 2.4-20170829 API API documentation generated by ApiGen 2.8.0