public function init()
{
// Check absolute bare minimum requirements.
if (!extension_loaded('xml') || !extension_loaded('pcre')) {
$this->error = 'XML or PCRE extensions not loaded!';
return false;
} elseif (!extension_loaded('xmlreader')) {
static $xml_is_sane = null;
if ($xml_is_sane === null) {
$parser_check = xml_parser_create();
xml_parse_into_struct($parser_check, '<foo>&</foo>', $values);
xml_parser_free($parser_check);
$xml_is_sane = isset($values[0]['value']);
}
if (!$xml_is_sane) {
return false;
}
}
if (method_exists($this->sanitize, 'set_registry')) {
$this->sanitize->set_registry($this->registry);
}
// Pass whatever was set with config options over to the sanitizer.
// Pass the classes in for legacy support; new classes should use the registry instead
$this->sanitize->pass_cache_data($this->cache, $this->cache_location, $this->cache_name_function, $this->registry->get_class('Cache'));
$this->sanitize->pass_file_data($this->registry->get_class('File'), $this->timeout, $this->useragent, $this->force_fsockopen, $this->curl_options);
if (!empty($this->multifeed_url)) {
$i = 0;
$success = 0;
$this->multifeed_objects = array();
$this->error = array();
foreach ($this->multifeed_url as $url) {
$this->multifeed_objects[$i] = clone $this;
$this->multifeed_objects[$i]->set_feed_url($url);
$single_success = $this->multifeed_objects[$i]->init();
$success |= $single_success;
if (!$single_success) {
$this->error[$i] = $this->multifeed_objects[$i]->error();
}
$i++;
}
return (bool) $success;
} elseif ($this->feed_url === null && $this->raw_data === null) {
return false;
}
$this->error = null;
$this->data = array();
$this->check_modified = false;
$this->multifeed_objects = array();
$cache = false;
if ($this->feed_url !== null) {
$parsed_feed_url = $this->registry->call('Misc', 'parse_url', array($this->feed_url));
// Decide whether to enable caching
if ($this->cache && $parsed_feed_url['scheme'] !== '') {
$cache = $this->registry->call('Cache', 'get_handler', array($this->cache_location, call_user_func($this->cache_name_function, $this->feed_url), 'spc'));
}
// Fetch the data via SimplePie_File into $this->raw_data
if (($fetched = $this->fetch_data($cache)) === true) {
return true;
} elseif ($fetched === false) {
return false;
}
list($headers, $sniffed) = $fetched;
}
// Empty response check
if (empty($this->raw_data)) {
$this->error = "A feed could not be found at `{$this->feed_url}`. Empty body.";
$this->registry->call('Misc', 'error', array($this->error, E_USER_NOTICE, __FILE__, __LINE__));
return false;
}
// Set up array of possible encodings
$encodings = array();
// First check to see if input has been overridden.
if ($this->input_encoding !== false) {
$encodings[] = strtoupper($this->input_encoding);
}
$application_types = array('application/xml', 'application/xml-dtd', 'application/xml-external-parsed-entity');
$text_types = array('text/xml', 'text/xml-external-parsed-entity');
// RFC 3023 (only applies to sniffed content)
if (isset($sniffed)) {
if (in_array($sniffed, $application_types) || substr($sniffed, 0, 12) === 'application/' && substr($sniffed, -4) === '+xml') {
if (isset($headers['content-type']) && preg_match('/;\\x20?charset=([^;]*)/i', $headers['content-type'], $charset)) {
$encodings[] = strtoupper($charset[1]);
}
$encodings = array_merge($encodings, $this->registry->call('Misc', 'xml_encoding', array($this->raw_data, &$this->registry)));
$encodings[] = 'UTF-8';
} elseif (in_array($sniffed, $text_types) || substr($sniffed, 0, 5) === 'text/' && substr($sniffed, -4) === '+xml') {
if (isset($headers['content-type']) && preg_match('/;\\x20?charset=([^;]*)/i', $headers['content-type'], $charset)) {
$encodings[] = strtoupper($charset[1]);
}
$encodings[] = 'US-ASCII';
} elseif (substr($sniffed, 0, 5) === 'text/') {
$encodings[] = 'UTF-8';
}
}
// Fallback to XML 1.0 Appendix F.1/UTF-8/ISO-8859-1
$encodings = array_merge($encodings, $this->registry->call('Misc', 'xml_encoding', array($this->raw_data, &$this->registry)));
$encodings[] = 'UTF-8';
$encodings[] = 'ISO-8859-1';
// There's no point in trying an encoding twice
$encodings = array_unique($encodings);
// Loop through each possible encoding, till we return something, or run out of possibilities
foreach ($encodings as $encoding) {
// Change the encoding to UTF-8 (as we always use UTF-8 internally)
if ($utf8_data = $this->registry->call('Misc', 'change_encoding', array($this->raw_data, $encoding, 'UTF-8'))) {
// Create new parser
$parser = $this->registry->create('Parser');
// If it's parsed fine
if ($parser->parse($utf8_data, 'UTF-8', $this->permanent_url)) {
$this->data = $parser->get_data();
if (!($this->get_type() & ~SIMPLEPIE_TYPE_NONE)) {
$this->error = "A feed could not be found at `{$this->feed_url}`. This does not appear to be a valid RSS or Atom feed.";
$this->registry->call('Misc', 'error', array($this->error, E_USER_NOTICE, __FILE__, __LINE__));
return false;
}
if (isset($headers)) {
$this->data['headers'] = $headers;
}
$this->data['build'] = SIMPLEPIE_BUILD;
// Cache the file if caching is enabled
if ($cache && !$cache->save($this)) {
trigger_error("{$this->cache_location} is not writeable. Make sure you've set the correct relative or absolute path, and that the location is server-writable.", E_USER_WARNING);
}
return true;
}
}
}
if (isset($parser)) {
// We have an error, just set SimplePie_Misc::error to it and quit
$this->error = $this->feed_url;
$this->error .= sprintf(' is invalid XML, likely due to invalid characters. XML error: %s at line %d, column %d', $parser->get_error_string(), $parser->get_current_line(), $parser->get_current_column());
} else {
$this->error = 'The data could not be converted to UTF-8.';
if (!extension_loaded('mbstring') && !extension_loaded('iconv') && !class_exists('\\UConverter')) {
$this->error .= ' You MUST have either the iconv, mbstring or intl (PHP 5.5+) extension installed and enabled.';
} else {
$missingExtensions = array();
if (!extension_loaded('iconv')) {
$missingExtensions[] = 'iconv';
}
if (!extension_loaded('mbstring')) {
$missingExtensions[] = 'mbstring';
}
if (!class_exists('\\UConverter')) {
$missingExtensions[] = 'intl (PHP 5.5+)';
}
$this->error .= ' Try installing/enabling the ' . implode(' or ', $missingExtensions) . ' extension.';
}
}
$this->registry->call('Misc', 'error', array($this->error, E_USER_NOTICE, __FILE__, __LINE__));
return false;
}
