MyShaarli/application/Updater.php

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<?php
use Shaarli\Config\ConfigJson;
use Shaarli\Config\ConfigPhp;
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use Shaarli\Config\ConfigManager;
/**
* Class Updater.
* Used to update stuff when a new Shaarli's version is reached.
* Update methods are ran only once, and the stored in a JSON file.
*/
class Updater
{
/**
* @var array Updates which are already done.
*/
protected $doneUpdates;
/**
* @var LinkDB instance.
*/
protected $linkDB;
/**
* @var ConfigManager $conf Configuration Manager instance.
*/
protected $conf;
/**
* @var bool True if the user is logged in, false otherwise.
*/
protected $isLoggedIn;
/**
* @var ReflectionMethod[] List of current class methods.
*/
protected $methods;
/**
* Object constructor.
*
* @param array $doneUpdates Updates which are already done.
* @param LinkDB $linkDB LinkDB instance.
* @param ConfigManager $conf Configuration Manager instance.
* @param boolean $isLoggedIn True if the user is logged in.
*/
public function __construct($doneUpdates, $linkDB, $conf, $isLoggedIn)
{
$this->doneUpdates = $doneUpdates;
$this->linkDB = $linkDB;
$this->conf = $conf;
$this->isLoggedIn = $isLoggedIn;
// Retrieve all update methods.
$class = new ReflectionClass($this);
$this->methods = $class->getMethods();
}
/**
* Run all new updates.
* Update methods have to start with 'updateMethod' and return true (on success).
*
* @return array An array containing ran updates.
*
* @throws UpdaterException If something went wrong.
*/
public function update()
{
$updatesRan = array();
// If the user isn't logged in, exit without updating.
if ($this->isLoggedIn !== true) {
return $updatesRan;
}
if ($this->methods === null) {
throw new UpdaterException('Couldn\'t retrieve Updater class methods.');
}
foreach ($this->methods as $method) {
// Not an update method or already done, pass.
if (! startsWith($method->getName(), 'updateMethod')
|| in_array($method->getName(), $this->doneUpdates)
) {
continue;
}
try {
$method->setAccessible(true);
$res = $method->invoke($this);
// Update method must return true to be considered processed.
if ($res === true) {
$updatesRan[] = $method->getName();
}
} catch (Exception $e) {
throw new UpdaterException($method, $e);
}
}
$this->doneUpdates = array_merge($this->doneUpdates, $updatesRan);
return $updatesRan;
}
/**
* @return array Updates methods already processed.
*/
public function getDoneUpdates()
{
return $this->doneUpdates;
}
/**
* Move deprecated options.php to config.php.
*
* Milestone 0.9 (old versioning) - shaarli/Shaarli#41:
* options.php is not supported anymore.
*/
public function updateMethodMergeDeprecatedConfigFile()
{
if (is_file($this->conf->get('resource.data_dir') . '/options.php')) {
include $this->conf->get('resource.data_dir') . '/options.php';
// Load GLOBALS into config
$allowedKeys = array_merge(ConfigPhp::$ROOT_KEYS);
$allowedKeys[] = 'config';
foreach ($GLOBALS as $key => $value) {
if (in_array($key, $allowedKeys)) {
$this->conf->set($key, $value);
}
}
$this->conf->write($this->isLoggedIn);
unlink($this->conf->get('resource.data_dir').'/options.php');
}
return true;
}
/**
* Move old configuration in PHP to the new config system in JSON format.
*
* Will rename 'config.php' into 'config.save.php' and create 'config.json.php'.
* It will also convert legacy setting keys to the new ones.
*/
public function updateMethodConfigToJson()
{
// JSON config already exists, nothing to do.
if ($this->conf->getConfigIO() instanceof ConfigJson) {
return true;
}
$configPhp = new ConfigPhp();
$configJson = new ConfigJson();
$oldConfig = $configPhp->read($this->conf->getConfigFile() . '.php');
rename($this->conf->getConfigFileExt(), $this->conf->getConfigFile() . '.save.php');
$this->conf->setConfigIO($configJson);
$this->conf->reload();
$legacyMap = array_flip(ConfigPhp::$LEGACY_KEYS_MAPPING);
foreach (ConfigPhp::$ROOT_KEYS as $key) {
$this->conf->set($legacyMap[$key], $oldConfig[$key]);
}
// Set sub config keys (config and plugins)
$subConfig = array('config', 'plugins');
foreach ($subConfig as $sub) {
foreach ($oldConfig[$sub] as $key => $value) {
if (isset($legacyMap[$sub .'.'. $key])) {
$configKey = $legacyMap[$sub .'.'. $key];
} else {
$configKey = $sub .'.'. $key;
}
$this->conf->set($configKey, $value);
}
}
try{
$this->conf->write($this->isLoggedIn);
return true;
} catch (IOException $e) {
error_log($e->getMessage());
return false;
}
}
/**
* Escape settings which have been manually escaped in every request in previous versions:
* - general.title
* - general.header_link
* - redirector.url
*
* @return bool true if the update is successful, false otherwise.
*/
public function updateMethodEscapeUnescapedConfig()
{
try {
$this->conf->set('general.title', escape($this->conf->get('general.title')));
$this->conf->set('general.header_link', escape($this->conf->get('general.header_link')));
$this->conf->set('redirector.url', escape($this->conf->get('redirector.url')));
$this->conf->write($this->isLoggedIn);
} catch (Exception $e) {
error_log($e->getMessage());
return false;
}
return true;
}
/**
* Update the database to use the new ID system, which replaces linkdate primary keys.
* Also, creation and update dates are now DateTime objects (done by LinkDB).
*
* Since this update is very sensitve (changing the whole database), the datastore will be
* automatically backed up into the file datastore.<datetime>.php.
*
* LinkDB also adds the field 'shorturl' with the precedent format (linkdate smallhash),
* which will be saved by this method.
*
* @return bool true if the update is successful, false otherwise.
*/
public function updateMethodDatastoreIds()
{
// up to date database
if (isset($this->linkDB[0])) {
return true;
}
$save = $this->conf->get('resource.data_dir') .'/datastore.'. date('YmdHis') .'.php';
copy($this->conf->get('resource.datastore'), $save);
$links = array();
foreach ($this->linkDB as $offset => $value) {
$links[] = $value;
unset($this->linkDB[$offset]);
}
$links = array_reverse($links);
$cpt = 0;
foreach ($links as $l) {
unset($l['linkdate']);
$l['id'] = $cpt;
$this->linkDB[$cpt++] = $l;
}
$this->linkDB->save($this->conf->get('resource.page_cache'));
$this->linkDB->reorder();
return true;
}
/**
* Rename tags starting with a '-' to work with tag exclusion search.
*/
public function updateMethodRenameDashTags()
{
$linklist = $this->linkDB->filterSearch();
foreach ($linklist as $key => $link) {
$link['tags'] = preg_replace('/(^| )\-/', '$1', $link['tags']);
$link['tags'] = implode(' ', array_unique(LinkFilter::tagsStrToArray($link['tags'], true)));
$this->linkDB[$key] = $link;
}
$this->linkDB->save($this->conf->get('resource.page_cache'));
return true;
}
/**
* Initialize API settings:
* - api.enabled: true
* - api.secret: generated secret
*/
public function updateMethodApiSettings()
{
if ($this->conf->exists('api.secret')) {
return true;
}
$this->conf->set('api.enabled', true);
$this->conf->set(
'api.secret',
generate_api_secret(
$this->conf->get('credentials.login'),
$this->conf->get('credentials.salt')
)
);
$this->conf->write($this->isLoggedIn);
return true;
}
/**
* New setting: theme name. If the default theme is used, nothing to do.
*
* If the user uses a custom theme, raintpl_tpl dir is updated to the parent directory,
* and the current theme is set as default in the theme setting.
*
* @return bool true if the update is successful, false otherwise.
*/
public function updateMethodDefaultTheme()
{
// raintpl_tpl isn't the root template directory anymore.
// We run the update only if this folder still contains the template files.
$tplDir = $this->conf->get('resource.raintpl_tpl');
$tplFile = $tplDir . '/linklist.html';
if (! file_exists($tplFile)) {
return true;
}
$parent = dirname($tplDir);
$this->conf->set('resource.raintpl_tpl', $parent);
$this->conf->set('resource.theme', trim(str_replace($parent, '', $tplDir), '/'));
$this->conf->write($this->isLoggedIn);
// Dependency injection gore
RainTPL::$tpl_dir = $tplDir;
return true;
}
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/**
* Move the file to inc/user.css to data/user.css.
*
* Note: Due to hardcoded paths, it's not unit testable. But one line of code should be fine.
*
* @return bool true if the update is successful, false otherwise.
*/
public function updateMethodMoveUserCss()
{
if (! is_file('inc/user.css')) {
return true;
}
return rename('inc/user.css', 'data/user.css');
}
/**
* While the new default theme is in an unstable state
* continue to use the vintage theme
*/
public function updateMethodDefaultThemeVintage()
{
if ($this->conf->get('resource.theme') !== 'default') {
return true;
}
$this->conf->set('resource.theme', 'vintage');
$this->conf->write($this->isLoggedIn);
return true;
}
/**
* * `markdown_escape` is a new setting, set to true as default.
*
* If the markdown plugin was already enabled, escaping is disabled to avoid
* breaking existing entries.
*/
public function updateMethodEscapeMarkdown()
{
if ($this->conf->exists('security.markdown_escape')) {
return true;
}
if (in_array('markdown', $this->conf->get('general.enabled_plugins'))) {
$this->conf->set('security.markdown_escape', false);
} else {
$this->conf->set('security.markdown_escape', true);
}
$this->conf->write($this->isLoggedIn);
return true;
}
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/**
* Add 'http://' to Piwik URL the setting is set.
*
* @return bool true if the update is successful, false otherwise.
*/
public function updateMethodPiwikUrl()
{
if (! $this->conf->exists('plugins.PIWIK_URL') || startsWith($this->conf->get('plugins.PIWIK_URL'), 'http')) {
return true;
}
$this->conf->set('plugins.PIWIK_URL', 'http://'. $this->conf->get('plugins.PIWIK_URL'));
$this->conf->write($this->isLoggedIn);
return true;
}
/**
* Use ATOM feed as default.
*/
public function updateMethodAtomDefault()
{
if (!$this->conf->exists('feed.show_atom') || $this->conf->get('feed.show_atom') === true) {
return true;
}
$this->conf->set('feed.show_atom', true);
$this->conf->write($this->isLoggedIn);
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return true;
}
}
/**
* Class UpdaterException.
*/
class UpdaterException extends Exception
{
/**
* @var string Method where the error occurred.
*/
protected $method;
/**
* @var Exception The parent exception.
*/
protected $previous;
/**
* Constructor.
*
* @param string $message Force the error message if set.
* @param string $method Method where the error occurred.
* @param Exception|bool $previous Parent exception.
*/
public function __construct($message = '', $method = '', $previous = false)
{
$this->method = $method;
$this->previous = $previous;
$this->message = $this->buildMessage($message);
}
/**
* Build the exception error message.
*
* @param string $message Optional given error message.
*
* @return string The built error message.
*/
private function buildMessage($message)
{
$out = '';
if (! empty($message)) {
$out .= $message . PHP_EOL;
}
if (! empty($this->method)) {
$out .= 'An error occurred while running the update '. $this->method . PHP_EOL;
}
if (! empty($this->previous)) {
$out .= ' '. $this->previous->getMessage();
}
return $out;
}
}
/**
* Read the updates file, and return already done updates.
*
* @param string $updatesFilepath Updates file path.
*
* @return array Already done update methods.
*/
function read_updates_file($updatesFilepath)
{
if (! empty($updatesFilepath) && is_file($updatesFilepath)) {
$content = file_get_contents($updatesFilepath);
if (! empty($content)) {
return explode(';', $content);
}
}
return array();
}
/**
* Write updates file.
*
* @param string $updatesFilepath Updates file path.
* @param array $updates Updates array to write.
*
* @throws Exception Couldn't write version number.
*/
function write_updates_file($updatesFilepath, $updates)
{
if (empty($updatesFilepath)) {
throw new Exception('Updates file path is not set, can\'t write updates.');
}
$res = file_put_contents($updatesFilepath, implode(';', $updates));
if ($res === false) {
throw new Exception('Unable to write updates in '. $updatesFilepath . '.');
}
}