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✏️ Editing: modification.php

<?php
/**
 * Modifcation XML Documentation can be found here:
 *
 * https://github.com/opencart/opencart/wiki/Modification-System
 */
class ControllerExtensionModification extends Controller {
	private $error = array();

public function index() {
		$this->load->language('extension/modification');

$this->document->setTitle($this->language->get('heading_title'));

$this->load->model('extension/modification');

$this->getList();
	}

public function delete() {
		$this->load->language('extension/modification');

$this->document->setTitle($this->language->get('heading_title'));

$this->load->model('extension/modification');

if (isset($this->request->post['selected']) && $this->validate()) {
			foreach ($this->request->post['selected'] as $modification_id) {
				$this->model_extension_modification->deleteModification($modification_id);
			}

$this->session->data['success'] = $this->language->get('text_success');

$url = '';

if (isset($this->request->get['sort'])) {
				$url .= '&sort=' . $this->request->get['sort'];
			}

if (isset($this->request->get['order'])) {
				$url .= '&order=' . $this->request->get['order'];
			}

if (isset($this->request->get['page'])) {
				$url .= '&page=' . $this->request->get['page'];
			}

$this->response->redirect($this->url->link('extension/modification', 'token=' . $this->session->data['token'] . $url, 'SSL'));
		}

$this->getList();
	}

public function refresh() {
		$this->load->language('extension/modification');

$this->document->setTitle($this->language->get('heading_title'));

$this->load->model('extension/modification');

if ($this->validate()) {
			// Just before files are deleted, if config settings say maintenance mode is off then turn it on
			$maintenance = $this->config->get('config_maintenance');

$this->load->model('setting/setting');

$this->model_setting_setting->editSettingValue('config', 'config_maintenance', true);

//Log
			$log = array();

// Clear all modification files
			$files = array();

// Make path into an array
			$path = array(DIR_MODIFICATION . '*');

// While the path array is still populated keep looping through
			while (count($path) != 0) {
				$next = array_shift($path);

foreach (glob($next) as $file) {
					// If directory add to path array
					if (is_dir($file)) {
						$path[] = $file . '/*';
					}

// Add the file to the files to be deleted array
					$files[] = $file;
				}
			}

// Reverse sort the file array
			rsort($files);

// Clear all modification files
			foreach ($files as $file) {
				if ($file != DIR_MODIFICATION . 'index.html') {
					// If file just delete
					if (is_file($file)) {
						unlink($file);

// If directory use the remove directory function
					} elseif (is_dir($file)) {
						rmdir($file);
					}
				}
			}

// Begin
			$xml = array();

// Load the default modification XML
			$xml[] = file_get_contents(DIR_SYSTEM . 'modification.xml');

// This is purly for developers so they can run mods directly and have them run without upload sfter each change.
			$files = glob(DIR_SYSTEM . '*.ocmod.xml');

if ($files) {
				foreach ($files as $file) {
					$xml[] = file_get_contents($file);
				}
			}

// Get the default modification file
			$results = $this->model_extension_modification->getModifications();

foreach ($results as $result) {
				if ($result['status']) {
					$xml[] = $result['xml'];
				}
			}

$modification = array();

foreach ($xml as $xml) {
				$dom = new DOMDocument('1.0', 'UTF-8');
				$dom->preserveWhiteSpace = false;
				$dom->loadXml($xml);

// Log
				$log[] = 'MOD: ' . $dom->getElementsByTagName('name')->item(0)->textContent;

// Wipe the past modification store in the backup array
				$recovery = array();

// Set the a recovery of the modification code in case we need to use it if an abort attribute is used.
				if (isset($modification)) {
					$recovery = $modification;
				}

$files = $dom->getElementsByTagName('modification')->item(0)->getElementsByTagName('file');

foreach ($files as $file) {
					$operations = $file->getElementsByTagName('operation');

$files = explode('|', $file->getAttribute('path'));

foreach ($files as $file) {
						$path = '';

// Get the full path of the files that are going to be used for modification
						if (substr($file, 0, 7) == 'catalog') {
							$path = DIR_CATALOG . str_replace('../', '', substr($file, 8));
						}

if (substr($file, 0, 5) == 'admin') {
							$path = DIR_APPLICATION . str_replace('../', '', substr($file, 6));
						}

if (substr($file, 0, 6) == 'system') {
							$path = DIR_SYSTEM . str_replace('../', '', substr($file, 7));
						}

if ($path) {
							$files = glob($path, GLOB_BRACE);

if ($files) {
								foreach ($files as $file) {
									// Get the key to be used for the modification cache filename.
									if (substr($file, 0, strlen(DIR_CATALOG)) == DIR_CATALOG) {
										$key = 'catalog/' . substr($file, strlen(DIR_CATALOG));
									}

if (substr($file, 0, strlen(DIR_APPLICATION)) == DIR_APPLICATION) {
										$key = 'admin/' . substr($file, strlen(DIR_APPLICATION));
									}

if (substr($file, 0, strlen(DIR_SYSTEM)) == DIR_SYSTEM) {
										$key = 'system/' . substr($file, strlen(DIR_SYSTEM));
									}

// If file contents is not already in the modification array we need to load it.
									if (!isset($modification[$key])) {
										$content = file_get_contents($file);

$modification[$key] = preg_replace('~\r?\n~', "\n", $content);
										$original[$key] = preg_replace('~\r?\n~', "\n", $content);

// Log
										$log[] = 'FILE: ' . $key;
									}

foreach ($operations as $operation) {
										$error = $operation->getAttribute('error');

// Ignoreif
										$ignoreif = $operation->getElementsByTagName('ignoreif')->item(0);

if ($ignoreif) {
											if ($ignoreif->getAttribute('regex') != 'true') {
												if (strpos($modification[$key], $ignoreif->textContent) !== false) {
													continue;
												}
											} else {
												if (preg_match($ignoreif->textContent, $modification[$key])) {
													continue;
												}
											}
										}

$status = false;

// Search and replace
										if ($operation->getElementsByTagName('search')->item(0)->getAttribute('regex') != 'true') {
											// Search
											$search = $operation->getElementsByTagName('search')->item(0)->textContent;
											$trim = $operation->getElementsByTagName('search')->item(0)->getAttribute('trim');
											$index = $operation->getElementsByTagName('search')->item(0)->getAttribute('index');

// Trim line if no trim attribute is set or is set to true.
											if (!$trim || $trim == 'true') {
												$search = trim($search);
											}

// Add
											$add = $operation->getElementsByTagName('add')->item(0)->textContent;
											$trim = $operation->getElementsByTagName('add')->item(0)->getAttribute('trim');
											$position = $operation->getElementsByTagName('add')->item(0)->getAttribute('position');
											$offset = $operation->getElementsByTagName('add')->item(0)->getAttribute('offset');

if ($offset == '') {
												$offset = 0;
											}

// Trim line if is set to true.
											if ($trim == 'true') {
												$add = trim($add);
											}

// Log
											$log[] = 'CODE: ' . $search;

// Check if using indexes
											if ($index !== '') {
												$indexes = explode(',', $index);
											} else {
												$indexes = array();
											}

// Get all the matches
											$i = 0;

$lines = explode("\n", $modification[$key]);

for ($line_id = 0; $line_id < count($lines); $line_id++) {
												$line = $lines[$line_id];

// Status
												$match = false;

// Check to see if the line matches the search code.
												if (stripos($line, $search) !== false) {
													// If indexes are not used then just set the found status to true.
													if (!$indexes) {
														$match = true;
													} elseif (in_array($i, $indexes)) {
														$match = true;
													}

$i++;
												}

// Now for replacing or adding to the matched elements
												if ($match) {
													switch ($position) {
														default:
														case 'replace':
															$new_lines = explode("\n", $add);

if ($offset < 0) {
																array_splice($lines, $line_id + $offset, abs($offset) + 1, array(str_replace($search, $add, $line)));

$line_id -= $offset;
															} else {
																array_splice($lines, $line_id, $offset + 1, array(str_replace($search, $add, $line)));
															}

break;
														case 'before':
															$new_lines = explode("\n", $add);

array_splice($lines, $line_id - $offset, 0, $new_lines);

$line_id += count($new_lines);
															break;
														case 'after':
															$new_lines = explode("\n", $add);

array_splice($lines, ($line_id + 1) + $offset, 0, $new_lines);

$line_id += count($new_lines);
															break;
													}

// Log
													$log[] = 'LINE: ' . $line_id;

$status = true;
												}
											}

$modification[$key] = implode("\n", $lines);
										} else {
											$search = trim($operation->getElementsByTagName('search')->item(0)->textContent);
											$limit = $operation->getElementsByTagName('search')->item(0)->getAttribute('limit');
											$replace = trim($operation->getElementsByTagName('add')->item(0)->textContent);

// Limit
											if (!$limit) {
												$limit = -1;
											}

// Log
											$match = array();

preg_match_all($search, $modification[$key], $match, PREG_OFFSET_CAPTURE);

// Remove part of the the result if a limit is set.
											if ($limit > 0) {
												$match[0] = array_slice($match[0], 0, $limit);
											}

if ($match[0]) {
												$log[] = 'REGEX: ' . $search;

for ($i = 0; $i < count($match[0]); $i++) {
													$log[] = 'LINE: ' . (substr_count(substr($modification[$key], 0, $match[0][$i][1]), "\n") + 1);
												}

$status = true;
											}

// Make the modification
											$modification[$key] = preg_replace($search, $replace, $modification[$key], $limit);
										}

if (!$status) {
											// Log
											$log[] = 'NOT FOUND!';

// Skip current operation
											if ($error == 'skip') {
												break;
											}

// Abort applying this modification completely.
											if ($error == 'abort') {
												$modification = $recovery;

// Log
												$log[] = 'ABORTING!';

break 5;
											}
										}
									}
								}
							}
						}
					}
				}

// Log
				$log[] = '----------------------------------------------------------------';
			}

// Log
			$ocmod = new Log('ocmod.log');
			$ocmod->write(implode("\n", $log));

// Write all modification files
			foreach ($modification as $key => $value) {
				// Only create a file if there are changes
				if ($original[$key] != $value) {
					$path = '';

$directories = explode('/', dirname($key));

foreach ($directories as $directory) {
						$path = $path . '/' . $directory;

if (!is_dir(DIR_MODIFICATION . $path)) {
							@mkdir(DIR_MODIFICATION . $path, 0777);
						}
					}

$handle = fopen(DIR_MODIFICATION . $key, 'w');

fwrite($handle, $value);

fclose($handle);
				}
			}

// Maintance mode back to original settings
			$this->model_setting_setting->editSettingValue('config', 'config_maintenance', $maintenance);

$this->session->data['success'] = $this->language->get('text_success');

$url = '';

if (isset($this->request->get['sort'])) {
				$url .= '&sort=' . $this->request->get['sort'];
			}

if (isset($this->request->get['order'])) {
				$url .= '&order=' . $this->request->get['order'];
			}

if (isset($this->request->get['page'])) {
				$url .= '&page=' . $this->request->get['page'];
			}

$this->response->redirect($this->url->link('extension/modification', 'token=' . $this->session->data['token'] . $url, 'SSL'));
		}

$this->getList();
	}

public function clear() {
		$this->load->language('extension/modification');

$this->document->setTitle($this->language->get('heading_title'));

$this->load->model('extension/modification');

if ($this->validate()) {
			$files = array();

// Make path into an array
			$path = array(DIR_MODIFICATION . '*');

// While the path array is still populated keep looping through
			while (count($path) != 0) {
				$next = array_shift($path);

foreach (glob($next) as $file) {
					// If directory add to path array
					if (is_dir($file)) {
						$path[] = $file . '/*';
					}

// Add the file to the files to be deleted array
					$files[] = $file;
				}
			}

// Reverse sort the file array
			rsort($files);

// Clear all modification files
			foreach ($files as $file) {
				if ($file != DIR_MODIFICATION . 'index.html') {
					// If file just delete
					if (is_file($file)) {
						unlink($file);

// If directory use the remove directory function
					} elseif (is_dir($file)) {
						rmdir($file);
					}
				}
			}

$this->session->data['success'] = $this->language->get('text_success');

$url = '';

if (isset($this->request->get['sort'])) {
				$url .= '&sort=' . $this->request->get['sort'];
			}

if (isset($this->request->get['order'])) {
				$url .= '&order=' . $this->request->get['order'];
			}

if (isset($this->request->get['page'])) {
				$url .= '&page=' . $this->request->get['page'];
			}

$this->response->redirect($this->url->link('extension/modification', 'token=' . $this->session->data['token'] . $url, 'SSL'));
		}

$this->getList();
	}

public function enable() {
		$this->load->language('extension/modification');

$this->document->setTitle($this->language->get('heading_title'));

$this->load->model('extension/modification');

if (isset($this->request->get['modification_id']) && $this->validate()) {
			$this->model_extension_modification->enableModification($this->request->get['modification_id']);

$this->session->data['success'] = $this->language->get('text_success');

$url = '';

if (isset($this->request->get['sort'])) {
				$url .= '&sort=' . $this->request->get['sort'];
			}

if (isset($this->request->get['order'])) {
				$url .= '&order=' . $this->request->get['order'];
			}

if (isset($this->request->get['page'])) {
				$url .= '&page=' . $this->request->get['page'];
			}

$this->response->redirect($this->url->link('extension/modification', 'token=' . $this->session->data['token'] . $url, 'SSL'));
		}

$this->getList();
	}

public function disable() {
		$this->load->language('extension/modification');

$this->document->setTitle($this->language->get('heading_title'));

$this->load->model('extension/modification');

if (isset($this->request->get['modification_id']) && $this->validate()) {
			$this->model_extension_modification->disableModification($this->request->get['modification_id']);

$this->session->data['success'] = $this->language->get('text_success');

$url = '';

if (isset($this->request->get['sort'])) {
				$url .= '&sort=' . $this->request->get['sort'];
			}

if (isset($this->request->get['order'])) {
				$url .= '&order=' . $this->request->get['order'];
			}

if (isset($this->request->get['page'])) {
				$url .= '&page=' . $this->request->get['page'];
			}

$this->response->redirect($this->url->link('extension/modification', 'token=' . $this->session->data['token'] . $url, 'SSL'));
		}

$this->getList();
	}

public function clearlog() {
		$this->load->language('extension/modification');

if ($this->validate()) {
			$handle = fopen(DIR_LOGS . 'ocmod.log', 'w+');

fclose($handle);

$this->session->data['success'] = $this->language->get('text_success');

$url = '';

if (isset($this->request->get['sort'])) {
				$url .= '&sort=' . $this->request->get['sort'];
			}

if (isset($this->request->get['order'])) {
				$url .= '&order=' . $this->request->get['order'];
			}

if (isset($this->request->get['page'])) {
				$url .= '&page=' . $this->request->get['page'];
			}

$this->response->redirect($this->url->link('extension/modification', 'token=' . $this->session->data['token'] . $url, 'SSL'));
		}

$this->getList();
	}

protected function getList() {
		if (isset($this->request->get['sort'])) {
			$sort = $this->request->get['sort'];
		} else {
			$sort = 'name';
		}

if (isset($this->request->get['order'])) {
			$order = $this->request->get['order'];
		} else {
			$order = 'ASC';
		}

if (isset($this->request->get['page'])) {
			$page = $this->request->get['page'];
		} else {
			$page = 1;
		}

$url = '';

if (isset($this->request->get['sort'])) {
			$url .= '&sort=' . $this->request->get['sort'];
		}

if (isset($this->request->get['order'])) {
			$url .= '&order=' . $this->request->get['order'];
		}

if (isset($this->request->get['page'])) {
			$url .= '&page=' . $this->request->get['page'];
		}

$data['breadcrumbs'] = array();

$data['breadcrumbs'][] = array(
			'text' => $this->language->get('text_home'),
			'href' => $this->url->link('common/dashboard', 'token=' . $this->session->data['token'], 'SSL')
		);

$data['breadcrumbs'][] = array(
			'text' => $this->language->get('heading_title'),
			'href' => $this->url->link('extension/modification', 'token=' . $this->session->data['token'], 'SSL')
		);

$data['refresh'] = $this->url->link('extension/modification/refresh', 'token=' . $this->session->data['token'] . $url, 'SSL');
		$data['clear'] = $this->url->link('extension/modification/clear', 'token=' . $this->session->data['token'] . $url, 'SSL');
		$data['delete'] = $this->url->link('extension/modification/delete', 'token=' . $this->session->data['token'] . $url, 'SSL');

$data['modifications'] = array();

$filter_data = array(
			'sort'  => $sort,
			'order' => $order,
			'start' => ($page - 1) * $this->config->get('config_limit_admin'),
			'limit' => $this->config->get('config_limit_admin')
		);

$modification_total = $this->model_extension_modification->getTotalModifications();

$results = $this->model_extension_modification->getModifications($filter_data);

foreach ($results as $result) {
			$data['modifications'][] = array(
				'modification_id' => $result['modification_id'],
				'name'            => $result['name'],
				'author'          => $result['author'],
				'version'         => $result['version'],
				'status'          => $result['status'] ? $this->language->get('text_enabled') : $this->language->get('text_disabled'),
				'date_added'      => date($this->language->get('date_format_short'), strtotime($result['date_added'])),
				'link'            => $result['link'],
				'enable'          => $this->url->link('extension/modification/enable', 'token=' . $this->session->data['token'] . '&modification_id=' . $result['modification_id'], 'SSL'),
				'disable'         => $this->url->link('extension/modification/disable', 'token=' . $this->session->data['token'] . '&modification_id=' . $result['modification_id'], 'SSL'),
				'enabled'         => $result['status'],
			);
		}

$data['heading_title'] = $this->language->get('heading_title');

$data['text_list'] = $this->language->get('text_list');
		$data['text_no_results'] = $this->language->get('text_no_results');
		$data['text_confirm'] = $this->language->get('text_confirm');
		$data['text_refresh'] = $this->language->get('text_refresh');

$data['column_name'] = $this->language->get('column_name');
		$data['column_author'] = $this->language->get('column_author');
		$data['column_version'] = $this->language->get('column_version');
		$data['column_status'] = $this->language->get('column_status');
		$data['column_date_added'] = $this->language->get('column_date_added');
		$data['column_action'] = $this->language->get('column_action');

$data['button_refresh'] = $this->language->get('button_refresh');
		$data['button_clear'] = $this->language->get('button_clear');
		$data['button_delete'] = $this->language->get('button_delete');
		$data['button_link'] = $this->language->get('button_link');
		$data['button_enable'] = $this->language->get('button_enable');
		$data['button_disable'] = $this->language->get('button_disable');

$data['tab_general'] = $this->language->get('tab_general');
		$data['tab_log'] = $this->language->get('tab_log');

$data['token'] = $this->session->data['token'];

if (isset($this->error['warning'])) {
			$data['error_warning'] = $this->error['warning'];
		} else {
			$data['error_warning'] = '';
		}

if (isset($this->session->data['success'])) {
			$data['success'] = $this->session->data['success'];

unset($this->session->data['success']);
		} else {
			$data['success'] = '';
		}

if (isset($this->request->post['selected'])) {
			$data['selected'] = (array)$this->request->post['selected'];
		} else {
			$data['selected'] = array();
		}

$url = '';

if ($order == 'ASC') {
			$url .= '&order=DESC';
		} else {
			$url .= '&order=ASC';
		}

if (isset($this->request->get['page'])) {
			$url .= '&page=' . $this->request->get['page'];
		}

$data['sort_name'] = $this->url->link('extension/modification', 'token=' . $this->session->data['token'] . '&sort=name' . $url, 'SSL');
		$data['sort_author'] = $this->url->link('extension/modification', 'token=' . $this->session->data['token'] . '&sort=author' . $url, 'SSL');
		$data['sort_version'] = $this->url->link('extension/version', 'token=' . $this->session->data['token'] . '&sort=author' . $url, 'SSL');
		$data['sort_status'] = $this->url->link('extension/modification', 'token=' . $this->session->data['token'] . '&sort=status' . $url, 'SSL');
		$data['sort_date_added'] = $this->url->link('extension/modification', 'token=' . $this->session->data['token'] . '&sort=date_added' . $url, 'SSL');

$url = '';

if (isset($this->request->get['sort'])) {
			$url .= '&sort=' . $this->request->get['sort'];
		}

if (isset($this->request->get['order'])) {
			$url .= '&order=' . $this->request->get['order'];
		}

$pagination = new Pagination();
		$pagination->total = $modification_total;
		$pagination->page = $page;
		$pagination->limit = $this->config->get('config_limit_admin');
		$pagination->url = $this->url->link('extension/modification', 'token=' . $this->session->data['token'] . $url . '&page={page}', 'SSL');

$data['pagination'] = $pagination->render();

$data['results'] = sprintf($this->language->get('text_pagination'), ($modification_total) ? (($page - 1) * $this->config->get('config_limit_admin')) + 1 : 0, ((($page - 1) * $this->config->get('config_limit_admin')) > ($modification_total - $this->config->get('config_limit_admin'))) ? $modification_total : ((($page - 1) * $this->config->get('config_limit_admin')) + $this->config->get('config_limit_admin')), $modification_total, ceil($modification_total / $this->config->get('config_limit_admin')));

$data['sort'] = $sort;
		$data['order'] = $order;

// Log
		$file = DIR_LOGS . 'ocmod.log';

if (file_exists($file)) {
			$data['log'] = htmlentities(file_get_contents($file, FILE_USE_INCLUDE_PATH, null));
		} else {
			$data['log'] = '';
		}

$data['clear_log'] = $this->url->link('extension/modification/clearlog', 'token=' . $this->session->data['token'], 'SSL');

$data['header'] = $this->load->controller('common/header');
		$data['column_left'] = $this->load->controller('common/column_left');
		$data['footer'] = $this->load->controller('common/footer');

$this->response->setOutput($this->load->view('extension/modification.tpl', $data));
	}

protected function validate() {
		if (!$this->user->hasPermission('modify', 'extension/modification')) {
			$this->error['warning'] = $this->language->get('error_permission');
		}

return !$this->error;
	}
}

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