forked from GNUsocial/gnu-social
Basic custom CSS and theme uploading features. 'local' subdir can now be customized to a distinct directory and URL path to make it easier to separate custom themes for a multi-site farm running a common code base.
Currently only one custom theme may be uploaded per site, saved with the name 'custom' and stored into the local/themes subdirectory. Administrators can upload a .ZIP archive containing a theme through the design admin panel; its contents are validated to ensure that only legit files are saved, and a 5M size quota is enforced. Theme upload requires the zip extension for PHP; if not present, theme uploading is disabled by default. Uploading and the custom CSS can be controlled via $config['theme_upload']['enabled'] and $config['custom_css']['enabled']. Configurable directory/path/server for 'local' subdirectory (currently only as used for themes; local plugins not yet switched over) Can set $config['local']['dir'] etc; not currently exposed in the admin panels. Per-site directories on a separate themes server could be set up such as: $config['local']['dir'] = '/path/to/themes/local/' . $_nickname; $config['local']['server'] = 'themes.example.com'; $config['local']['path'] = '/local/' . $_nickname; $config['local']['ssl'] = 'never';
This commit is contained in:
Brion Vibber
parent
8e33cdd36a
commit
09208f8d65
@ -125,9 +125,19 @@ class DesignadminpanelAction extends AdminPanelAction
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return;
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}
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// check for an image upload
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// check for file uploads
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$bgimage = $this->saveBackgroundImage();
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$customTheme = $this->saveCustomTheme();
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$oldtheme = common_config('site', 'theme');
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if ($customTheme) {
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// This feels pretty hacky :D
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$this->args['theme'] = $customTheme;
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$themeChanged = true;
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} else {
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$themeChanged = ($this->trimmed('theme') != $oldtheme);
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}
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static $settings = array('theme', 'logo');
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@ -139,15 +149,13 @@ class DesignadminpanelAction extends AdminPanelAction
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$this->validate($values);
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$oldtheme = common_config('site', 'theme');
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$config = new Config();
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$config->query('BEGIN');
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// Only update colors if the theme has not changed.
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if ($oldtheme == $values['theme']) {
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if (!$themeChanged) {
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$bgcolor = new WebColor($this->trimmed('design_background'));
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$ccolor = new WebColor($this->trimmed('design_content'));
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@ -189,6 +197,13 @@ class DesignadminpanelAction extends AdminPanelAction
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Config::save('design', 'backgroundimage', $bgimage);
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}
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if (common_config('custom_css', 'enabled')) {
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$css = $this->arg('css');
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if ($css != common_config('custom_css', 'css')) {
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Config::save('custom_css', 'css', $css);
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}
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}
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$config->query('COMMIT');
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}
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@ -262,6 +277,33 @@ class DesignadminpanelAction extends AdminPanelAction
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}
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}
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/**
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* Save the custom theme if the user uploaded one.
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*
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* @return mixed custom theme name, if succesful, or null if no theme upload.
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* @throws ClientException for invalid theme archives
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* @throws ServerException if trouble saving the theme files
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*/
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function saveCustomTheme()
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{
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if (common_config('theme_upload', 'enabled') &&
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$_FILES['design_upload_theme']['error'] == UPLOAD_ERR_OK) {
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$upload = ThemeUploader::fromUpload('design_upload_theme');
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$basedir = common_config('local', 'dir');
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if (empty($basedir)) {
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$basedir = INSTALLDIR . '/local';
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}
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$name = 'custom'; // @todo allow multiples, custom naming?
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$outdir = $basedir . '/theme/' . $name;
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$upload->extract($outdir);
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return $name;
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} else {
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return null;
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}
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}
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/**
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* Attempt to validate setting values
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*
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@ -374,6 +416,7 @@ class DesignAdminPanelForm extends AdminForm
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$this->showTheme();
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$this->showBackground();
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$this->showColors();
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$this->showAdvanced();
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}
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function showLogo()
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@ -418,6 +461,16 @@ class DesignAdminPanelForm extends AdminForm
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false, $this->value('theme'));
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$this->unli();
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if (common_config('theme_upload', 'enabled')) {
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$this->li();
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$this->out->element('label', array('for' => 'design_upload_theme'), _('Custom theme'));
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$this->out->element('input', array('id' => 'design_upload_theme',
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'name' => 'design_upload_theme',
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'type' => 'file'));
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$this->out->element('p', 'form_guide', _('You can upload a custom StatusNet theme as a .ZIP archive.'));
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$this->unli();
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}
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$this->out->elementEnd('ul');
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$this->out->elementEnd('fieldset');
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@ -502,6 +555,8 @@ class DesignAdminPanelForm extends AdminForm
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function showColors()
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{
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$design = $this->out->design;
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$this->out->elementStart('fieldset', array('id' => 'settings_design_color'));
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$this->out->element('legend', null, _('Change colours'));
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@ -586,6 +641,27 @@ class DesignAdminPanelForm extends AdminForm
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$this->out->elementEnd('ul');
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}
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function showAdvanced()
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{
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if (common_config('custom_css', 'enabled')) {
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$this->out->elementStart('fieldset', array('id' => 'settings_design_advanced'));
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$this->out->element('legend', null, _('Advanced'));
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$this->out->elementStart('ul', 'form_data');
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$this->li();
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$this->out->element('label', array('for' => 'css'), _('Custom CSS'));
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$this->out->element('textarea', array('name' => 'css',
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'id' => 'css',
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'cols' => '50',
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'rows' => '10'),
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strval(common_config('custom_css', 'css')));
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$this->unli();
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$this->out->elementEnd('fieldset');
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$this->out->elementEnd('ul');
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}
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}
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/**
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* Action elements
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*
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@ -233,6 +233,16 @@ class Action extends HTMLOutputter // lawsuit
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Event::handle('EndShowDesign', array($this));
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}
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Event::handle('EndShowStyles', array($this));
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if (common_config('custom_css', 'enabled')) {
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$css = common_config('custom_css', 'css');
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if (Event::handle('StartShowCustomCss', array($this, &$css))) {
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if (trim($css) != '') {
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$this->style($css);
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}
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Event::handle('EndShowCustomCss', array($this));
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}
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}
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}
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}
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@ -283,9 +283,10 @@ class AdminPanelAction extends Action
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$this->clientError(_("Unable to delete design setting."));
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return null;
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}
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return $result;
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}
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return $result;
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return null;
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}
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function canAdmin($name)
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@ -141,10 +141,17 @@ $default =
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'dir' => null,
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'path'=> null,
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'ssl' => null),
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'theme_upload' =>
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array('enabled' => extension_loaded('zip')),
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'javascript' =>
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array('server' => null,
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'path'=> null,
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'ssl' => null),
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'local' => // To override path/server for themes in 'local' dir (not currently applied to local plugins)
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array('server' => null,
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'dir' => null,
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'path' => null,
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'ssl' => null),
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'throttle' =>
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array('enabled' => false, // whether to throttle edits; false by default
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'count' => 20, // number of allowed messages in timespan
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@ -260,6 +267,9 @@ $default =
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'linkcolor' => null,
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'backgroundimage' => null,
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'disposition' => null),
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'custom_css' =>
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array('enabled' => true,
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'css' => ''),
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'notice' =>
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array('contentlimit' => null),
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'message' =>
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104
lib/theme.php
104
lib/theme.php
@ -38,6 +38,9 @@ if (!defined('STATUSNET') && !defined('LACONICA')) {
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* Themes are directories with some expected sub-directories and files
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* in them. They're found in either local/theme (for locally-installed themes)
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* or theme/ subdir of installation dir.
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*
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* Note that the 'local' directory can be overridden as $config['local']['path']
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* and $config['local']['dir'] etc.
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*
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* This used to be a couple of functions, but for various reasons it's nice
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* to have a class instead.
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@ -76,7 +79,7 @@ class Theme
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if (file_exists($fulldir) && is_dir($fulldir)) {
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$this->dir = $fulldir;
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$this->path = common_path('local/theme/'.$name.'/');
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$this->path = $this->relativeThemePath('local', 'local', 'theme/' . $name);
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return;
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}
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@ -89,44 +92,65 @@ class Theme
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if (file_exists($fulldir) && is_dir($fulldir)) {
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$this->dir = $fulldir;
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$path = common_config('theme', 'path');
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if (empty($path)) {
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$path = common_config('site', 'path') . '/theme/';
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}
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if ($path[strlen($path)-1] != '/') {
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$path .= '/';
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}
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if ($path[0] != '/') {
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$path = '/'.$path;
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}
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$server = common_config('theme', 'server');
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if (empty($server)) {
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$server = common_config('site', 'server');
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}
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$ssl = common_config('theme', 'ssl');
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if (is_null($ssl)) { // null -> guess
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if (common_config('site', 'ssl') == 'always' &&
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!common_config('theme', 'server')) {
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$ssl = true;
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} else {
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$ssl = false;
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}
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}
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$protocol = ($ssl) ? 'https' : 'http';
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$this->path = $protocol . '://'.$server.$path.$name;
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$this->path = $this->relativeThemePath('theme', 'theme', $name);
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}
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}
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/**
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* Build a full URL to the given theme's base directory, possibly
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* using an offsite theme server path.
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*
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* @param string $group configuration section name to pull paths from
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* @param string $fallbackSubdir default subdirectory under INSTALLDIR
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* @param string $name theme name
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*
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* @return string URL
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*
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* @todo consolidate code with that for other customizable paths
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*/
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protected function relativeThemePath($group, $fallbackSubdir, $name)
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{
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$path = common_config($group, 'path');
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if (empty($path)) {
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$path = common_config('site', 'path') . '/';
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if ($fallbackSubdir) {
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$path .= $fallbackSubdir . '/';
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}
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}
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if ($path[strlen($path)-1] != '/') {
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$path .= '/';
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}
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if ($path[0] != '/') {
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$path = '/'.$path;
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}
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$server = common_config($group, 'server');
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if (empty($server)) {
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$server = common_config('site', 'server');
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}
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$ssl = common_config($group, 'ssl');
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if (is_null($ssl)) { // null -> guess
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if (common_config('site', 'ssl') == 'always' &&
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!common_config($group, 'server')) {
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$ssl = true;
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} else {
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$ssl = false;
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}
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}
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$protocol = ($ssl) ? 'https' : 'http';
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$path = $protocol . '://'.$server.$path.$name;
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return $path;
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}
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/**
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* Gets the full local filename of a file in this theme.
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*
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@ -236,7 +260,13 @@ class Theme
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protected static function localRoot()
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{
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return INSTALLDIR.'/local/theme';
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$basedir = common_config('local', 'dir');
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if (empty($basedir)) {
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$basedir = INSTALLDIR . '/local';
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}
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return $basedir . '/theme';
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}
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/**
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311
lib/themeuploader.php
Normal file
311
lib/themeuploader.php
Normal file
@ -0,0 +1,311 @@
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<?php
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/**
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* StatusNet, the distributed open-source microblogging tool
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*
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* Utilities for theme files and paths
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*
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* PHP version 5
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*
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* LICENCE: This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* @category Paths
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* @package StatusNet
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* @author Brion Vibber <brion@status.net>
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* @copyright 2010 StatusNet, Inc.
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* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
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* @link http://status.net/
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*/
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if (!defined('STATUSNET') && !defined('LACONICA')) {
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exit(1);
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}
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/**
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* Encapsulation of the validation-and-save process when dealing with
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* a user-uploaded StatusNet theme archive...
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*
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* @todo extract theme metadata from css/display.css
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* @todo allow saving multiple themes
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*/
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class ThemeUploader
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{
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protected $sourceFile;
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protected $isUpload;
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private $prevErrorReporting;
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public function __construct($filename)
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{
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if (!class_exists('ZipArchive')) {
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throw new Exception(_("This server cannot handle theme uploads without ZIP support."));
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}
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$this->sourceFile = $filename;
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}
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public static function fromUpload($name)
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{
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if (!isset($_FILES[$name]['error'])) {
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throw new ServerException(_("Theme upload missing or failed."));
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}
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if ($_FILES[$name]['error'] != UPLOAD_ERR_OK) {
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throw new ServerException(_("Theme upload missing or failed."));
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}
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return new ThemeUploader($_FILES[$name]['tmp_name']);
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}
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/**
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* @param string $destDir
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* @throws Exception on bogus files
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*/
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public function extract($destDir)
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{
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$zip = $this->openArchive();
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// First pass: validate but don't save anything to disk.
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// Any errors will trip an exception.
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$this->traverseArchive($zip);
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// Second pass: now that we know we're good, actually extract!
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$tmpDir = $destDir . '.tmp' . getmypid();
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$this->traverseArchive($zip, $tmpDir);
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$zip->close();
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if (file_exists($destDir)) {
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$killDir = $tmpDir . '.old';
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$this->quiet();
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$ok = rename($destDir, $killDir);
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$this->loud();
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if (!$ok) {
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common_log(LOG_ERR, "Could not move old custom theme from $destDir to $killDir");
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throw new ServerException(_("Failed saving theme."));
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}
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} else {
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$killDir = false;
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}
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$this->quiet();
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$ok = rename($tmpDir, $destDir);
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$this->loud();
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if (!$ok) {
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common_log(LOG_ERR, "Could not move saved theme from $tmpDir to $destDir");
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throw new ServerException(_("Failed saving theme."));
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}
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if ($killDir) {
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$this->recursiveRmdir($killDir);
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}
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}
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/**
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*
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*/
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protected function traverseArchive($zip, $outdir=false)
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{
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$sizeLimit = 2 * 1024 * 1024; // 2 megabyte space limit?
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$blockSize = 4096; // estimated; any entry probably takes this much space
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$totalSize = 0;
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$hasMain = false;
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$commonBaseDir = false;
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for ($i = 0; $i < $zip->numFiles; $i++) {
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$data = $zip->statIndex($i);
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$name = str_replace('\\', '/', $data['name']);
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if (substr($name, -1) == '/') {
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// A raw directory... skip!
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continue;
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}
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// Check the directory structure...
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$path = pathinfo($name);
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$dirs = explode('/', $path['dirname']);
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$baseDir = array_shift($dirs);
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if ($commonBaseDir === false) {
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$commonBaseDir = $baseDir;
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} else {
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if ($commonBaseDir != $baseDir) {
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throw new ClientException(_("Invalid theme: bad directory structure."));
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}
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}
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foreach ($dirs as $dir) {
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$this->validateFileOrFolder($dir);
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}
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// Is this a safe or skippable file?
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if ($this->skippable($path['filename'], $path['extension'])) {
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// Documentation and such... booooring
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continue;
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} else {
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||||
$this->validateFile($path['filename'], $path['extension']);
|
||||
}
|
||||
|
||||
$fullPath = $dirs;
|
||||
$fullPath[] = $path['basename'];
|
||||
$localFile = implode('/', $fullPath);
|
||||
if ($localFile == 'css/display.css') {
|
||||
$hasMain = true;
|
||||
}
|
||||
|
||||
$size = $data['size'];
|
||||
$estSize = $blockSize * max(1, intval(ceil($size / $blockSize)));
|
||||
$totalSize += $estSize;
|
||||
if ($totalSize > $sizeLimit) {
|
||||
$msg = sprintf(_("Uploaded theme is too large; " .
|
||||
"must be less than %d bytes uncompressed."),
|
||||
$sizeLimit);
|
||||
throw new ClientException($msg);
|
||||
}
|
||||
|
||||
if ($outdir) {
|
||||
$this->extractFile($zip, $data['name'], "$outdir/$localFile");
|
||||
}
|
||||
}
|
||||
|
||||
if (!$hasMain) {
|
||||
throw new ClientException(_("Invalid theme archive: " .
|
||||
"missing file css/display.css"));
|
||||
}
|
||||
}
|
||||
|
||||
protected function skippable($filename, $ext)
|
||||
{
|
||||
$skip = array('txt', 'rtf', 'doc', 'docx', 'odt');
|
||||
if (strtolower($filename) == 'readme') {
|
||||
return true;
|
||||
}
|
||||
if (in_array(strtolower($ext), $skip)) {
|
||||
return true;
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
protected function validateFile($filename, $ext)
|
||||
{
|
||||
$this->validateFileOrFolder($filename);
|
||||
$this->validateExtension($ext);
|
||||
// @fixme validate content
|
||||
}
|
||||
|
||||
protected function validateFileOrFolder($name)
|
||||
{
|
||||
if (!preg_match('/^[a-z0-9_-]+$/i', $name)) {
|
||||
$msg = _("Theme contains invalid file or folder name. " .
|
||||
"Stick with ASCII letters, digits, underscore, and minus sign.");
|
||||
throw new ClientException($msg);
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
protected function validateExtension($ext)
|
||||
{
|
||||
$allowed = array('css', 'png', 'gif', 'jpg', 'jpeg');
|
||||
if (!in_array(strtolower($ext), $allowed)) {
|
||||
$msg = sprintf(_("Theme contains file of type '.%s', " .
|
||||
"which is not allowed."),
|
||||
$ext);
|
||||
throw new ClientException($msg);
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
/**
|
||||
* @return ZipArchive
|
||||
*/
|
||||
protected function openArchive()
|
||||
{
|
||||
$zip = new ZipArchive;
|
||||
$ok = $zip->open($this->sourceFile);
|
||||
if ($ok !== true) {
|
||||
common_log(LOG_ERR, "Error opening theme zip archive: " .
|
||||
"{$this->sourceFile} code: {$ok}");
|
||||
throw new Exception(_("Error opening theme archive."));
|
||||
}
|
||||
return $zip;
|
||||
}
|
||||
|
||||
/**
|
||||
* @param ZipArchive $zip
|
||||
* @param string $from original path inside ZIP archive
|
||||
* @param string $to final destination path in filesystem
|
||||
*/
|
||||
protected function extractFile($zip, $from, $to)
|
||||
{
|
||||
$dir = dirname($to);
|
||||
if (!file_exists($dir)) {
|
||||
$this->quiet();
|
||||
$ok = mkdir($dir, 0755, true);
|
||||
$this->loud();
|
||||
if (!$ok) {
|
||||
common_log(LOG_ERR, "Failed to mkdir $dir while uploading theme");
|
||||
throw new ServerException(_("Failed saving theme."));
|
||||
}
|
||||
} else if (!is_dir($dir)) {
|
||||
common_log(LOG_ERR, "Output directory $dir not a directory while uploading theme");
|
||||
throw new ServerException(_("Failed saving theme."));
|
||||
}
|
||||
|
||||
// ZipArchive::extractTo would be easier, but won't let us alter
|
||||
// the directory structure.
|
||||
$in = $zip->getStream($from);
|
||||
if (!$in) {
|
||||
common_log(LOG_ERR, "Couldn't open archived file $from while uploading theme");
|
||||
throw new ServerException(_("Failed saving theme."));
|
||||
}
|
||||
$this->quiet();
|
||||
$out = fopen($to, "wb");
|
||||
$this->loud();
|
||||
if (!$out) {
|
||||
common_log(LOG_ERR, "Couldn't open output file $to while uploading theme");
|
||||
throw new ServerException(_("Failed saving theme."));
|
||||
}
|
||||
while (!feof($in)) {
|
||||
$buffer = fread($in, 65536);
|
||||
fwrite($out, $buffer);
|
||||
}
|
||||
fclose($in);
|
||||
fclose($out);
|
||||
}
|
||||
|
||||
private function quiet()
|
||||
{
|
||||
$this->prevErrorReporting = error_reporting();
|
||||
error_reporting($this->prevErrorReporting & ~E_WARNING);
|
||||
}
|
||||
|
||||
private function loud()
|
||||
{
|
||||
error_reporting($this->prevErrorReporting);
|
||||
}
|
||||
|
||||
private function recursiveRmdir($dir)
|
||||
{
|
||||
$list = dir($dir);
|
||||
while (($file = $list->read()) !== false) {
|
||||
if ($file == '.' || $file == '..') {
|
||||
continue;
|
||||
}
|
||||
$full = "$dir/$file";
|
||||
if (is_dir($full)) {
|
||||
$this->recursiveRmdir($full);
|
||||
} else {
|
||||
unlink($full);
|
||||
}
|
||||
}
|
||||
$list->close();
|
||||
rmdir($dir);
|
||||
}
|
||||
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user