bludit/bl-kernel/functions.php

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<?php defined('BLUDIT') or die('Bludit CMS.');
// Re-index database of categories
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// If you create/edit/remove a page is necessary regenerate the database of categories
function reindexCategories() {
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global $categories;
return $categories->reindex();
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}
// Re-index database of tags
// If you create/edit/remove a page is necessary regenerate the database of tags
function reindexTags() {
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global $tags;
return $tags->reindex();
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}
// Generate the page 404 Not found
function buildErrorPage() {
global $site;
global $L;
try {
$pageNotFoundKey = $site->pageNotFound();
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$pageNotFound = New Page($pageNotFoundKey);
} catch (Exception $e) {
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$pageNotFound = New Page(false);
$pageNotFound->setField('title', $L->get('page-not-found'));
$pageNotFound->setField('content', $L->get('page-not-found-content'));
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$pageNotFound->setField('username', 'admin');
}
return $pageNotFound;
}
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// This function is only used from the rule 69.pages.php, DO NOT use this function!
// This function generate a particular page from the current slug of the url
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// If the slug has not a page associacted returns FALSE and set not-found as true
function buildThePage() {
global $url;
try {
$pageKey = $url->slug();
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$page = New Page($pageKey);
} catch (Exception $e) {
$url->setNotFound();
return false;
}
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if ($page->draft() || $page->scheduled() || $page->autosave()) {
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if ($url->parameter('preview')!==md5($page->uuid())) {
$url->setNotFound();
return false;
}
}
return $page;
}
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// This function is only used from the rule 69.pages.php, DO NOT use this function!
function buildPagesForHome() {
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return buildPagesFor('home');
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}
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// This function is only used from the rule 69.pages.php, DO NOT use this function!
function buildPagesByCategory() {
global $url;
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$categoryKey = $url->slug();
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return buildPagesFor('category', $categoryKey, false);
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}
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// This function is only used from the rule 69.pages.php, DO NOT use this function!
function buildPagesByTag() {
global $url;
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$tagKey = $url->slug();
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return buildPagesFor('tag', false, $tagKey);
}
// This function is only used from the rule 69.pages.php, DO NOT use this function!
// Generate the global variables $content / $content, defined on 69.pages.php
// This function is use for buildPagesForHome(), buildPagesByCategory(), buildPagesByTag()
function buildPagesFor($for, $categoryKey=false, $tagKey=false) {
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global $pages;
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global $categories;
global $tags;
global $site;
global $url;
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// Get the page number from URL
$pageNumber = $url->pageNumber();
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if ($for=='home') {
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$onlyPublished = true;
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$numberOfItems = $site->itemsPerPage();
$list = $pages->getList($pageNumber, $numberOfItems, $onlyPublished);
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// Include sticky pages only in the first page
if ($pageNumber==1) {
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$sticky = $pages->getStickyDB();
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$list = array_merge($sticky, $list);
}
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}
elseif ($for=='category') {
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$numberOfItems = $site->itemsPerPage();
$list = $categories->getList($categoryKey, $pageNumber, $numberOfItems);
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}
elseif ($for=='tag') {
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$numberOfItems = $site->itemsPerPage();
$list = $tags->getList($tagKey, $pageNumber, $numberOfItems);
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}
// There are not items, invalid tag, invalid category, out of range, etc...
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if ($list===false) {
$url->setNotFound();
return false;
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}
$content = array();
foreach ($list as $pageKey) {
try {
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$page = new Page($pageKey);
if ( ($page->type()=='published') ||
($page->type()=='sticky') ||
($page->type()=='static')
) {
array_push($content, $page);
}
} catch (Exception $e) {
// continue
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}
}
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return $content;
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}
// Returns an array with all the static pages as Page-Object
// The static pages are order by position all the time
function buildStaticPages() {
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global $pages;
$list = array();
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$pagesKey = $pages->getStaticDB();
foreach ($pagesKey as $pageKey) {
try {
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$page = new Page($pageKey);
array_push($list, $page);
} catch (Exception $e) {
// continue
}
}
return $list;
}
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// Returns the Page-Object if exists, FALSE otherwise
function buildPage($pageKey) {
try {
$page = new Page($pageKey);
return $page;
} catch (Exception $e) {
return false;
}
}
// Returns an array with all the parent pages as Page-Object
// The pages are order by the settings on the system
function buildParentPages() {
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global $pages;
$list = array();
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$pagesKey = $pages->getPublishedDB();
foreach ($pagesKey as $pageKey) {
try {
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$page = new Page($pageKey);
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if ($page->isParent()) {
array_push($list, $page);
}
} catch (Exception $e) {
// continue
}
}
return $list;
}
// Returns the Plugin-Object if is enabled and installed, FALSE otherwise
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function getPlugin($pluginClassName) {
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global $plugins;
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if (pluginActivated($pluginClassName)) {
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return $plugins['all'][$pluginClassName];
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}
return false;
}
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// Returns TRUE if the plugin is activaed / installed, FALSE otherwise
function pluginActivated($pluginClassName) {
global $plugins;
if (isset($plugins['all'][$pluginClassName])) {
return $plugins['all'][$pluginClassName]->installed();
}
return false;
}
function activatePlugin($pluginClassName) {
global $plugins;
global $syslog;
global $L;
// Check if the plugin exists
if (isset($plugins['all'][$pluginClassName])) {
$plugin = $plugins['all'][$pluginClassName];
if ($plugin->install()) {
// Add to syslog
$syslog->add(array(
'dictionaryKey'=>'plugin-activated',
'notes'=>$plugin->name()
));
// Create an alert
Alert::set($L->g('plugin-activated'));
return true;
}
}
return false;
}
function deactivatePlugin($pluginClassName) {
global $plugins;
global $syslog;
global $L;
// Check if the plugin exists
if (isset($plugins['all'][$pluginClassName])) {
$plugin = $plugins['all'][$pluginClassName];
if ($plugin->uninstall()) {
// Add to syslog
$syslog->add(array(
'dictionaryKey'=>'plugin-deactivated',
'notes'=>$plugin->name()
));
// Create an alert
Alert::set($L->g('plugin-deactivated'));
return true;
}
}
return false;
}
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function changePluginsPosition($pluginClassList) {
global $plugins;
global $syslog;
global $L;
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foreach ($pluginClassList as $position=>$pluginClassName) {
if (isset($plugins['all'][$pluginClassName])) {
$plugin = $plugins['all'][$pluginClassName];
$plugin->setPosition(++$position);
}
}
// Add to syslog
$syslog->add(array(
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'dictionaryKey'=>'plugins-sorted',
'notes'=>''
));
Alert::set($L->g('The changes have been saved'));
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return true;
}
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/*
Create a new page
The array $args support all the keys from variable $dbFields of the class pages.class.php
If you don't pass all the keys, the default values are used, the default values are from $dbFields in the class pages.class.php
*/
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function createPage($args) {
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global $pages;
global $syslog;
global $L;
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// Check if the autosave page exists for this new page and delete it
if (isset($args['uuid'])) {
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$autosaveKey = $pages->getByUUID('autosave-'.$args['uuid']);
if (!empty($autosaveKey)) {
Log::set('Function createPage()'.LOG_SEP.'Autosave deleted for '.$args['title'], LOG_TYPE_INFO);
deletePage($autosaveKey);
}
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}
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// The user is always the one loggued
$args['username'] = Session::get('username');
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if (empty($args['username'])) {
Log::set('Function createPage()'.LOG_SEP.'Empty username.', LOG_TYPE_ERROR);
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return false;
}
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$key = $pages->add($args);
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if ($key) {
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// Call the plugins after page created
Theme::plugins('afterPageCreate');
reindexCategories();
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reindexTags();
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// Add to syslog
$syslog->add(array(
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'dictionaryKey'=>'new-content-created',
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'notes'=>(empty($args['title'])?$key:$args['title'])
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));
return $key;
}
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Log::set('Function createNewPage()'.LOG_SEP.'Error occurred when trying to create the page', LOG_TYPE_ERROR);
Log::set('Function createNewPage()'.LOG_SEP.'Cleaning database...', LOG_TYPE_ERROR);
deletePage($key);
Log::set('Function createNewPage()'.LOG_SEP.'Cleaning finished...', LOG_TYPE_ERROR);
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return false;
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}
function editPage($args) {
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global $pages;
global $syslog;
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// Check if the autosave/preview page exists for this new page and delete it
if (isset($args['uuid'])) {
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$autosaveKey = $pages->getByUUID('autosave-'.$args['uuid']);
if ($autosaveKey) {
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Log::set('Function editPage()'.LOG_SEP.'Autosave/Preview deleted for '.$autosaveKey, LOG_TYPE_INFO);
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deletePage($autosaveKey);
}
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}
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// Check if the key is not empty
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if (empty($args['key'])) {
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Log::set('Function editPage()'.LOG_SEP.'Empty key.', LOG_TYPE_ERROR);
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return false;
}
// Check if the page key exist
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if (!$pages->exists($args['key'])) {
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Log::set('Function editPage()'.LOG_SEP.'Page key does not exist, '.$args['key'], LOG_TYPE_ERROR);
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return false;
}
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$key = $pages->edit($args);
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if ($key) {
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// Call the plugins after page modified
Theme::plugins('afterPageModify');
reindexCategories();
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reindexTags();
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// Add to syslog
$syslog->add(array(
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'dictionaryKey'=>'content-edited',
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'notes'=>empty($args['title'])?$key:$args['title']
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));
return $key;
}
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Log::set('Function editPage()'.LOG_SEP.'Something happen when try to edit the page.', LOG_TYPE_ERROR);
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return false;
}
function deletePage($key) {
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global $pages;
global $syslog;
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if ($pages->delete($key)) {
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// Call the plugins after page deleted
Theme::plugins('afterPageDelete');
reindexCategories();
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reindexTags();
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// Add to syslog
$syslog->add(array(
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'dictionaryKey'=>'content-deleted',
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'notes'=>$key
));
return true;
}
return false;
}
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function editUser($args) {
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global $users;
global $syslog;
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if ($users->set($args)) {
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// Add to syslog
$syslog->add(array(
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'dictionaryKey'=>'user-edited',
'notes'=>$args['username']
));
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return true;
}
return false;
}
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function disableUser($args) {
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global $users;
global $login;
global $syslog;
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// Arguments
$username = $args['username'];
// Only administrators can disable users
if ($login->role()!=='admin') {
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return false;
}
// Check if the username exists
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if (!$users->exists($username)) {
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return false;
}
// Disable the user
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if ($users->disableUser($username)) {
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// Add to syslog
$syslog->add(array(
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'dictionaryKey'=>'user-disabled',
'notes'=>$username
));
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return true;
}
return false;
}
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function deleteUser($args) {
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global $users, $pages;
global $login;
global $syslog;
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// Arguments
$username = $args['username'];
$deleteContent = isset($args['deleteContent']) ? $args['deleteContent'] : false;
// Only administrators can delete users
if ($login->role()!=='admin') {
return false;
}
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// The user admin cannot be deleted
if ($username=='admin') {
return false;
}
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// Check if the username exists
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if (!$users->exists($username)) {
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return false;
}
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if ($deleteContent) {
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$pages->deletePagesByUser(array('username'=>$username));
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} else {
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$pages->transferPages(array('oldUsername'=>$username));
}
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if ($users->delete($username)) {
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// Add to syslog
$syslog->add(array(
'dictionaryKey'=>'user-deleted',
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'notes'=>$username
));
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return true;
}
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return false;
}
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function createUser($args) {
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global $users;
global $L;
global $syslog;
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// Check empty username
if (Text::isEmpty($args['new_username'])) {
Alert::set($L->g('username-field-is-empty'), ALERT_STATUS_FAIL);
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return false;
}
// Check already exist username
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if ($users->exists($args['new_username'])) {
Alert::set($L->g('username-already-exists'), ALERT_STATUS_FAIL);
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return false;
}
// Password length
if (Text::length($args['new_password']) < PASSWORD_LENGTH) {
Alert::set($L->g('Password must be at least '.PASSWORD_LENGTH.' characters long'), ALERT_STATUS_FAIL);
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return false;
}
// Check new password and confirm password are equal
if ($args['new_password'] != $args['confirm_password']) {
Alert::set($L->g('The password and confirmation password do not match'), ALERT_STATUS_FAIL);
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return false;
}
// Filter form fields
$tmp = array();
$tmp['username'] = Text::removeSpecialCharacters($args['new_username']);
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$tmp['password'] = $args['new_password'];
$tmp['role'] = $args['role'];
$tmp['email'] = $args['email'];
// Add the user to the database
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if ($users->add($tmp)) {
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// Add to syslog
$syslog->add(array(
'dictionaryKey'=>'new-user-created',
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'notes'=>$tmp['username']
));
return true;
}
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return false;
}
function editSettings($args) {
global $site;
global $syslog;
global $L;
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global $pages;
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if (isset($args['language'])) {
if ($args['language']!=$site->language()) {
$tmp = new dbJSON(PATH_LANGUAGES.$args['language'].'.json', false);
if (isset($tmp->db['language-data']['locale'])) {
$args['locale'] = $tmp->db['language-data']['locale'];
} else {
$args['locale'] = $args['language'];
}
}
}
if (empty($args['homepage'])) {
$args['homepage'] = '';
}
if (empty($args['pageNotFound'])) {
$args['pageNotFound'] = '';
}
if (isset($args['uriPage'])) {
$args['uriPage'] = Text::addSlashes($args['uriPage']);
}
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if (isset($args['uriTag'])) {
$args['uriTag'] = Text::addSlashes($args['uriTag']);
}
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if (isset($args['uriCategory'])) {
$args['uriCategory'] = Text::addSlashes($args['uriCategory']);
}
if (isset($args['uriBlog'])) {
$args['uriBlog'] = Text::addSlashes($args['uriBlog']);
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} else {
$args['uriBlog'] = '';
}
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if (isset($args['extremeFriendly'])) {
$args['extremeFriendly'] = (($args['extremeFriendly']=='true')?true:false);
}
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if (isset($args['customFields'])) {
// Custom fields need to be JSON format valid, also the empty JSON need to be "{}"
json_decode($args['customFields']);
if (json_last_error() != JSON_ERROR_NONE) {
return false;
}
$pages->setCustomFields($args['customFields']);
}
if ($site->set($args)) {
// Check current order-by if changed it reorder the content
if ($site->orderBy()!=ORDER_BY) {
if ($site->orderBy()=='date') {
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$pages->sortByDate();
} else {
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$pages->sortByPosition();
}
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$pages->save();
}
// Add syslog
$syslog->add(array(
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'dictionaryKey'=>'settings-changes',
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'notes'=>''
));
// Create alert
Alert::set($L->g('The changes have been saved'));
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return true;
}
return false;
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}
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function changeUserPassword($args) {
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global $users;
global $L;
global $syslog;
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// Arguments
$username = $args['username'];
$newPassword = $args['newPassword'];
$confirmPassword = $args['confirmPassword'];
// Password length
if (Text::length($newPassword) < 6) {
Alert::set($L->g('Password must be at least 6 characters long'), ALERT_STATUS_FAIL);
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return false;
}
if ($newPassword!=$confirmPassword) {
Alert::set($L->g('The password and confirmation password do not match'), ALERT_STATUS_FAIL);
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return false;
}
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if ($users->setPassword(array('username'=>$username, 'password'=>$newPassword))) {
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// Add to syslog
$syslog->add(array(
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'dictionaryKey'=>'user-password-changed',
'notes'=>$username
));
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Alert::set($L->g('The changes have been saved'), ALERT_STATUS_OK);
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return true;
}
return false;
}
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// Returns true if the user is allowed to procceded
function checkRole($allowRoles, $redirect=true) {
global $login;
global $L;
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global $syslog;
$userRole = $login->role();
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if (in_array($userRole, $allowRoles)) {
return true;
}
if ($redirect) {
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// Add to syslog
$syslog->add(array(
'dictionaryKey'=>'access-denied',
'notes'=>$login->username()
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));
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Alert::set($L->g('You do not have sufficient permissions'));
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Redirect::page('dashboard');
}
return false;
}
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// Add a new category to the system
// Returns TRUE is successfully added, FALSE otherwise
function createCategory($args) {
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global $categories;
global $L;
global $syslog;
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if (Text::isEmpty($args['name'])) {
Alert::set($L->g('Category name is empty'), ALERT_STATUS_FAIL);
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return false;
}
if ($categories->add(array('name'=>$args['name'], 'description'=>$args['description']))) {
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// Add to syslog
$syslog->add(array(
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'dictionaryKey'=>'new-category-created',
'notes'=>$args['name']
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));
Alert::set($L->g('Category added'), ALERT_STATUS_OK);
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return true;
}
Alert::set($L->g('The category already exists'), ALERT_STATUS_FAIL);
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return false;
}
function editCategory($args) {
global $L;
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global $pages;
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global $categories;
global $syslog;
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if (Text::isEmpty($args['name']) || Text::isEmpty($args['newKey']) ) {
Alert::set($L->g('Empty fields'));
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return false;
}
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$newCategoryKey = $categories->edit($args);
if ($newCategoryKey==false) {
Alert::set($L->g('The category already exists'));
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return false;
}
// Change the category key in the pages database
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$pages->changeCategory($args['oldKey'], $newCategoryKey);
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// Add to syslog
$syslog->add(array(
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'dictionaryKey'=>'category-edited',
'notes'=>$newCategoryKey
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));
Alert::set($L->g('The changes have been saved'));
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return true;
}
function deleteCategory($args) {
global $L;
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global $categories;
global $syslog;
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// Remove the category by key
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$categories->remove($args['oldKey']);
// Remove the category from the pages ? or keep it if the user want to recovery the category ?
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// Add to syslog
$syslog->add(array(
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'dictionaryKey'=>'category-deleted',
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'notes'=>$args['oldKey']
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));
Alert::set($L->g('The changes have been saved'));
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return true;
}
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// Returns an array with all the categories
// By default, the database of categories is alphanumeric sorted
function getCategories() {
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global $categories;
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$list = array();
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foreach ($categories->keys() as $key) {
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$category = new Category($key);
array_push($list, $category);
}
return $list;
}
// Returns the object category if the category exists, FALSE otherwise
function getCategory($key) {
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try {
$category = new Category($key);
return $category;
} catch (Exception $e) {
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return false;
}
}
// Returns an array with all the tags
// By default, the database of tags is alphanumeric sorted
function getTags() {
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global $tags;
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$list = array();
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foreach ($tags->db as $key=>$fields) {
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$tag = new Tag($key);
array_push($list, $tag);
}
return $list;
}
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// Returns the object tag if the tag exists, FALSE otherwise
function getTag($key) {
try {
$tag = new Tag($key);
return $tag;
} catch (Exception $e) {
return false;
}
}
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// Activate a theme
function activateTheme($themeDirectory) {
global $site;
global $syslog;
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global $L, $language;
if (Sanitize::pathFile(PATH_THEMES.$themeDirectory)) {
if (Filesystem::fileExists(PATH_THEMES.$themeDirectory.DS.'install.php')) {
include_once(PATH_THEMES.$themeDirectory.DS.'install.php');
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}
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$site->set(array('theme'=>$themeDirectory));
$syslog->add(array(
'dictionaryKey'=>'new-theme-configured',
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'notes'=>$themeDirectory
));
Alert::set( $L->g('The changes have been saved') );
return true;
}
return false;
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}
function ajaxResponse($status=0, $message="", $data=array()) {
$default = array('status'=>$status, 'message'=>$message);
$output = array_merge($default, $data);
exit (json_encode($output));
}
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/*
| This function checks the image extension,
| generate a new filename to not overwrite the exists,
| generate the thumbnail,
| and move the image to a proper place
|
| @file string Path and filename of the image
| @imageDir string Path where the image is going to be stored
| @thumbnailDir string Path where the thumbnail is going to be stored, if you don't set the variable is not going to create the thumbnail
|
| @return string/boolean Path and filename of the new image or FALSE if there were some error
*/
function transformImage($file, $imageDir, $thumbnailDir=false) {
global $site;
// Check image extension
$fileExtension = Filesystem::extension($file);
$fileExtension = Text::lowercase($fileExtension);
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if (!in_array($fileExtension, $GLOBALS['ALLOWED_IMG_EXTENSION']) ) {
return false;
}
// Generate a filename to not overwrite current image if exists
$filename = Filesystem::filename($file);
$nextFilename = Filesystem::nextFilename($imageDir, $filename);
// Move the image to a proper place and rename
$image = $imageDir.$nextFilename;
Filesystem::mv($file, $image);
chmod($image, 0644);
// Generate Thumbnail
if (!empty($thumbnailDir)) {
if ($fileExtension == 'svg') {
symlink($image, $thumbnailDir.$nextFilename);
} else {
$Image = new Image();
$Image->setImage($image, $site->thumbnailWidth(), $site->thumbnailHeight(), 'crop');
$Image->saveImage($thumbnailDir.$nextFilename, $site->thumbnailQuality(), true);
}
}
return $image;
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}
function downloadRestrictedFile($file) {
if (is_file($file)) {
header('Content-Description: File Transfer');
header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename="'.basename($file).'"');
header('Expires: 0');
header('Cache-Control: must-revalidate');
header('Pragma: public');
header('Content-Length: ' . filesize($file));
readfile($file);
exit(0);
}
}