int seconds, default system config value or 60 seconds * * \b headers => array of additional header fields * * \b http_auth => username:password * * \b novalidate => do not validate SSL certs, default is to validate using our CA list * * \b nobody => only return the header * * \b filep => stream resource to write body to. header and body are not returned when using this option. * * \b custom => custom request method: e.g. 'PUT', 'DELETE' * * \b cookiejar => cookie file (write) * * \b cookiefile => cookie file (read) * * \b session => boolean; append session cookie *if* $url is our own site * * @return array an associative array with: * * \e int \b return_code => HTTP return code or 0 if timeout or failure * * \e boolean \b success => boolean true (if HTTP 2xx result) or false * * \e string \b header => HTTP headers * * \e string \b body => fetched content */ function z_fetch_url($url, $binary = false, $redirects = 0, $opts = array()) { $ret = array('return_code' => 0, 'success' => false, 'header' => "", 'body' => ""); $ch = @curl_init($url); if(($redirects > 8) || (! $ch)) return $ret; if(! array_key_exists('request_target',$opts)) { $opts['request_target'] = 'get ' . get_request_string($url); } @curl_setopt($ch, CURLOPT_HEADER, true); @curl_setopt($ch, CURLINFO_HEADER_OUT, true); @curl_setopt($ch, CURLOPT_CAINFO, get_capath()); @curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, true); @curl_setopt($ch, CURLOPT_RETURNTRANSFER,true); @curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (compatible; zot)'); @curl_setopt($ch, CURLOPT_ENCODING, ''); $ciphers = @get_config('system','curl_ssl_ciphers'); if($ciphers) @curl_setopt($ch, CURLOPT_SSL_CIPHER_LIST, $ciphers); if(x($opts,'filep')) { @curl_setopt($ch, CURLOPT_FILE, $opts['filep']); @curl_setopt($ch, CURLOPT_HEADER, false); } if(x($opts,'upload')) @curl_setopt($ch, CURLOPT_UPLOAD, $opts['upload']); if(x($opts,'infile')) @curl_setopt($ch, CURLOPT_INFILE, $opts['infile']); if(x($opts,'infilesize')) @curl_setopt($ch, CURLOPT_INFILESIZE, $opts['infilesize']); if(x($opts,'readfunc')) @curl_setopt($ch, CURLOPT_READFUNCTION, $opts['readfunc']); // When using the session option and fetching from our own site, // append the PHPSESSID cookie to any existing headers. // Don't add to $opts['headers'] so that the cookie does not get // sent to other sites via redirects $instance_headers = ((array_key_exists('headers',$opts) && is_array($opts['headers'])) ? $opts['headers'] : []); if(x($opts,'session')) { if(strpos($url,z_root()) === 0) { $instance_headers[] = 'Cookie: PHPSESSID=' . session_id(); } } if($instance_headers) @curl_setopt($ch, CURLOPT_HTTPHEADER, $instance_headers); if(x($opts,'nobody')) @curl_setopt($ch, CURLOPT_NOBODY, $opts['nobody']); if(x($opts,'custom')) @curl_setopt($ch, CURLOPT_CUSTOMREQUEST, $opts['custom']); if(x($opts,'timeout') && intval($opts['timeout'])) { @curl_setopt($ch, CURLOPT_TIMEOUT, intval($opts['timeout'])); } else { $curl_time = intval(@get_config('system','curl_timeout')); @curl_setopt($ch, CURLOPT_TIMEOUT, (($curl_time !== false) ? $curl_time : 60)); } if(x($opts,'connecttimeout') && intval($opts['connecttimeout'])) { @curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, intval($opts['connecttimeout'])); } else { $curl_contime = intval(@get_config('system','curl_connecttimeout')); @curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, (($curl_contime !== false) ? $curl_contime : 30)); } if(x($opts,'http_auth')) { // "username" . ':' . "password" @curl_setopt($ch, CURLOPT_USERPWD, $opts['http_auth']); } if(array_key_exists('http_version',$opts)) @curl_setopt($ch,CURLOPT_HTTP_VERSION,$opts['http_version']); if(x($opts,'cookiejar')) @curl_setopt($ch, CURLOPT_COOKIEJAR, $opts['cookiejar']); if(x($opts,'cookiefile')) @curl_setopt($ch, CURLOPT_COOKIEFILE, $opts['cookiefile']); if(x($opts,'cookie')) @curl_setopt($ch, CURLOPT_COOKIE, $opts['cookie']); @curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, ((x($opts,'novalidate') && intval($opts['novalidate'])) ? false : true)); $prx = @get_config('system','proxy'); if(strlen($prx)) { @curl_setopt($ch, CURLOPT_HTTPPROXYTUNNEL, 1); @curl_setopt($ch, CURLOPT_PROXY, $prx); $prxusr = @get_config('system','proxyuser'); if(strlen($prxusr)) @curl_setopt($ch, CURLOPT_PROXYUSERPWD, $prxusr); } if($binary) @curl_setopt($ch, CURLOPT_BINARYTRANSFER,1); // don't let curl abort the entire application' // if it throws any errors. $s = @curl_exec($ch); $base = $s; $curl_info = @curl_getinfo($ch); $http_code = $curl_info['http_code']; //logger('fetch_url:' . $http_code . ' data: ' . $s); $header = ''; // Pull out multiple headers, e.g. proxy and continuation headers // allow for HTTP/2.x without fixing code while(preg_match('/^HTTP\/[1-3](\.\d)? [1-5][0-9][0-9]/',$base)) { $chunk = substr($base,0,strpos($base,"\r\n\r\n")+4); $header .= $chunk; $base = substr($base,strlen($chunk)); } if($http_code == 301 || $http_code == 302 || $http_code == 303 || $http_code == 307 || $http_code == 308) { $matches = array(); preg_match('/(Location:|URI:)(.*?)\n/i', $header, $matches); $newurl = trim(array_pop($matches)); if(strpos($newurl,'/') === 0) $newurl = $url . $newurl; $url_parsed = @parse_url($newurl); if (isset($url_parsed)) { @curl_close($ch); return z_fetch_url($newurl,$binary,++$redirects,$opts); } } $rc = intval($http_code); $ret['return_code'] = $rc; $ret['success'] = (($rc >= 200 && $rc <= 299) ? true : false); if(! $ret['success']) { $ret['error'] = curl_error($ch); $ret['debug'] = $curl_info; logger('z_fetch_url: error: ' . $url . ': ' . $ret['error'], LOGGER_DEBUG); logger('z_fetch_url: debug: ' . print_r($curl_info,true), LOGGER_DATA); } $ret['body'] = substr($s,strlen($header)); $ret['header'] = $header; $ret['request_target'] = $opts['request_target']; if(x($opts,'debug')) { $ret['debug'] = $curl_info; } @curl_close($ch); return($ret); } /** * @brief Does a curl post request. * * @param string $url * URL to post * @param mixed $params * The full data to post in a HTTP "POST" operation. This parameter can * either be passed as a urlencoded string like 'para1=val1¶2=val2&...' * or as an array with the field name as key and field data as value. If value * is an array, the Content-Type header will be set to multipart/form-data. * @param int $redirects = 0 * internal use, recursion counter * @param array $opts (optional parameters) * 'timeout' => int seconds, default system config value or 60 seconds * 'http_auth' => username:password * 'novalidate' => do not validate SSL certs, default is to validate using our CA list * 'filep' => stream resource to write body to. header and body are not returned when using this option. * 'custom' => custom request method: e.g. 'PUT', 'DELETE' * * @return array an associative array with: * * \e int \b return_code => HTTP return code or 0 if timeout or failure * * \e boolean \b success => boolean true (if HTTP 2xx result) or false * * \e string \b header => HTTP headers * * \e string \b body => content * * \e string \b debug => from curl_info() */ function z_post_url($url, $params, $redirects = 0, $opts = array()) { // logger('url: ' . $url); // logger('params: ' . print_r($params,true)); // logger('opts: ' . print_r($opts,true)); $ret = array('return_code' => 0, 'success' => false, 'header' => "", 'body' => ""); $ch = curl_init($url); if(($redirects > 8) || (! $ch)) return $ret; if(! array_key_exists('request_target',$opts)) { $opts['request_target'] = 'post ' . get_request_string($url); } @curl_setopt($ch, CURLOPT_HEADER, true); @curl_setopt($ch, CURLINFO_HEADER_OUT, true); @curl_setopt($ch, CURLOPT_CAINFO, get_capath()); @curl_setopt($ch, CURLOPT_RETURNTRANSFER,true); @curl_setopt($ch, CURLOPT_POST,1); @curl_setopt($ch, CURLOPT_POSTFIELDS,$params); @curl_setopt($ch, CURLOPT_USERAGENT, "Mozilla/5.0 (compatible; zot)"); @curl_setopt($ch, CURLOPT_ENCODING, ''); $ciphers = @get_config('system','curl_ssl_ciphers'); if($ciphers) @curl_setopt($ch, CURLOPT_SSL_CIPHER_LIST, $ciphers); if(x($opts,'filep')) { @curl_setopt($ch, CURLOPT_FILE, $opts['filep']); @curl_setopt($ch, CURLOPT_HEADER, false); } $instance_headers = ((array_key_exists('headers',$opts) && is_array($opts['headers'])) ? $opts['headers'] : []); if(x($opts,'session')) { if(strpos($url,z_root()) === 0) { $instance_headers[] = 'Cookie: PHPSESSID=' . session_id(); } } if($instance_headers) @curl_setopt($ch, CURLOPT_HTTPHEADER, $instance_headers); if(x($opts,'nobody')) @curl_setopt($ch, CURLOPT_NOBODY, $opts['nobody']); if(x($opts,'custom')) { @curl_setopt($ch, CURLOPT_CUSTOMREQUEST, $opts['custom']); @curl_setopt($ch, CURLOPT_POST,0); } if(x($opts,'timeout') && intval($opts['timeout'])) { @curl_setopt($ch, CURLOPT_TIMEOUT, $opts['timeout']); } else { $curl_time = intval(@get_config('system','curl_timeout')); @curl_setopt($ch, CURLOPT_TIMEOUT, (($curl_time !== false) ? $curl_time : 60)); } if(x($opts,'http_auth')) { // "username" . ':' . "password" @curl_setopt($ch, CURLOPT_USERPWD, $opts['http_auth']); } if(array_key_exists('http_version',$opts)) @curl_setopt($ch,CURLOPT_HTTP_VERSION,$opts['http_version']); if(x($opts,'cookiejar')) @curl_setopt($ch, CURLOPT_COOKIEJAR, $opts['cookiejar']); if(x($opts,'cookiefile')) @curl_setopt($ch, CURLOPT_COOKIEFILE, $opts['cookiefile']); if(x($opts,'cookie')) @curl_setopt($ch, CURLOPT_COOKIE, $opts['cookie']); @curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, ((x($opts,'novalidate') && intval($opts['novalidate'])) ? false : true)); $prx = get_config('system','proxy'); if(strlen($prx)) { @curl_setopt($ch, CURLOPT_HTTPPROXYTUNNEL, 1); @curl_setopt($ch, CURLOPT_PROXY, $prx); $prxusr = get_config('system','proxyuser'); if(strlen($prxusr)) @curl_setopt($ch, CURLOPT_PROXYUSERPWD, $prxusr); } // don't let curl abort the entire application // if it throws any errors. $s = @curl_exec($ch); $base = $s; $curl_info = @curl_getinfo($ch); $http_code = $curl_info['http_code']; $header = ''; // Pull out multiple headers, e.g. proxy and continuation headers // allow for HTTP/2.x without fixing code while(preg_match('/^HTTP\/[1-3](\.\d)? [1-5][0-9][0-9]/',$base)) { $chunk = substr($base,0,strpos($base,"\r\n\r\n")+4); $header .= $chunk; $base = substr($base,strlen($chunk)); } // would somebody take lighttpd and just shoot it? if($http_code == 417) { curl_close($ch); if($opts) { if($opts['headers']) $opts['headers'][] = 'Expect:'; else $opts['headers'] = array('Expect:'); } else $opts = array('headers' => array('Expect:')); return z_post_url($url,$params,++$redirects,$opts); } if($http_code == 301 || $http_code == 302 || $http_code == 303 || $http_code == 307 || $http_code == 308) { $matches = array(); preg_match('/(Location:|URI:)(.*?)\n/', $header, $matches); $newurl = ''; if (array_pop($matches)) $newurl = trim(array_pop($matches)); if($newurl && strpos($newurl,'/') === 0) $newurl = $url . $newurl; $url_parsed = @parse_url($newurl); if (isset($url_parsed)) { curl_close($ch); if($http_code == 303) { return z_fetch_url($newurl,false,++$redirects,$opts); } else { return z_post_url($newurl,$params,++$redirects,$opts); } } } $rc = intval($http_code); $ret['return_code'] = $rc; $ret['success'] = (($rc >= 200 && $rc <= 299) ? true : false); if(! $ret['success']) { $ret['error'] = curl_error($ch); $ret['debug'] = $curl_info; logger('z_post_url: error: ' . $url . ': ' . $ret['error'], LOGGER_DEBUG); logger('z_post_url: debug: ' . print_r($curl_info,true), LOGGER_DATA); } $ret['body'] = substr($s, strlen($header)); $ret['header'] = $header; $ret['request_target'] = $opts['request_target']; if(x($opts,'debug')) { $ret['debug'] = $curl_info; } curl_close($ch); return($ret); } function z_curl_error($ret) { $output = EMPTY_STR; if (isset($ret['debug'])) { $output .= datetime_convert() . EOL; $output .= t('url: ') . $ret['debug']['url'] . EOL; $output .= t('error_code: ') . $ret['debug']['error_code'] . EOL; $output .= t('error_string: ') . $ret['error'] . EOL; $output .= t('content-type: ') . $ret['debug']['content_type'] . EOL; } return $output; } function json_return_and_die($x, $content_type = 'application/json') { header("Content-type: $content_type"); echo json_encode($x); killme(); } function as_return_and_die($obj,$channel) { $x = array_merge(['@context' => [ ACTIVITYSTREAMS_JSONLD_REV, 'https://w3id.org/security/v1', z_root() . ZOT_APSCHEMA_REV ]], $obj ); $headers = []; $headers['Content-Type'] = 'application/ld+json; profile="https://www.w3.org/ns/activitystreams"' ; $x['signature'] = LDSignatures::sign($x,$channel); $ret = json_encode($x, JSON_UNESCAPED_SLASHES); logger('data: ' . jindent($ret), LOGGER_DATA); $headers['Date'] = datetime_convert('UTC','UTC', 'now', 'D, d M Y H:i:s \\G\\M\\T'); $headers['Digest'] = HTTPSig::generate_digest_header($ret); $headers['(request-target)'] = strtolower($_SERVER['REQUEST_METHOD']) . ' ' . $_SERVER['REQUEST_URI']; $h = HTTPSig::create_sig($headers,$channel['channel_prvkey'],channel_url($channel)); HTTPSig::set_headers($h); echo $ret; killme(); } /** * @brief Send HTTP status header. * * @param int $val * integer HTTP status result value * @param string $msg * optional message */ function http_status($val, $msg = '') { if ($val >= 400) $msg = (($msg) ? $msg : 'Error'); if ($val >= 200 && $val < 300) $msg = (($msg) ? $msg : 'OK'); logger(\App::$query_string . ':' . $val . ' ' . $msg); header($_SERVER['SERVER_PROTOCOL'] . ' ' . $val . ' ' . $msg); } /** * @brief Send HTTP status header and exit. * * @param int $val * integer HTTP status result value * @param string $msg * optional message * @return void does not return, process is terminated */ function http_status_exit($val, $msg = '') { http_status($val, $msg); killme(); } /** * @brief Convert an XML document to a normalised, case-corrected array used by webfinger. * * @param string|array|SimpleXMLElement $xml_element * @param[in,out] int $recursion_depth * @return NULL|string|array */ function convert_xml_element_to_array($xml_element, &$recursion_depth=0) { // If we're getting too deep, bail out if ($recursion_depth > 512) { return(null); } if (!is_string($xml_element) && !is_array($xml_element) && (get_class($xml_element) == 'SimpleXMLElement')) { $xml_element_copy = $xml_element; $xml_element = get_object_vars($xml_element); } if (is_array($xml_element)) { $result_array = array(); if (count($xml_element) <= 0) { return (trim(strval($xml_element_copy))); } foreach($xml_element as $key=>$value) { $recursion_depth++; $result_array[strtolower($key)] = convert_xml_element_to_array($value, $recursion_depth); $recursion_depth--; } if ($recursion_depth == 0) { $temp_array = $result_array; $result_array = array( strtolower($xml_element_copy->getName()) => $temp_array, ); } return ($result_array); } else { return (trim(strval($xml_element))); } } function z_dns_check($h,$check_mx = 0) { // dns_get_record() has issues on some platforms // so allow somebody to ignore it completely // Use config values from memory as this can be called during setup // before a database or even any config structure exists. if(is_array(\App::$config) && array_key_exists('system',\App::$config) && is_array(\App::$config['system']) && array_key_exists('do_not_check_dns',\App::$config['system']) && \App::$config['system']['do_not_check_dns']) return true; // This will match either Windows or Mac ('Darwin') if(stripos(PHP_OS,'win') !== false) return true; // BSD variants have dns_get_record() but it only works reliably without any options if(stripos(PHP_OS,'bsd') !== false) return((@dns_get_record($h) || filter_var($h, FILTER_VALIDATE_IP)) ? true : false); // Otherwise we will assume dns_get_record() works as documented $opts = DNS_A + DNS_AAAA; if($check_mx) $opts += DNS_MX; return((@dns_get_record($h,$opts) || filter_var($h, FILTER_VALIDATE_IP)) ? true : false); } function is_local_url($url) { if (str_starts_with($url, z_root()) || str_starts_with($url, '/')) { return true; } return false; } /** * @brief Validates a given URL. * * Take a URL from the wild, prepend http:// if necessary and check DNS to see * if it's real (or check if is a valid IP address). * * @see z_dns_check() * * @param[in,out] string $url URL to check * @return boolean Return true if it's OK, false if something is wrong with it */ function validate_url(&$url) { // no naked subdomains (allow localhost for tests) if(strpos($url, '.') === false && strpos($url, '/localhost/') === false) return false; if(substr($url, 0, 4) != 'http') $url = 'http://' . $url; $h = @parse_url($url); if(($h) && z_dns_check($h['host'])) { return true; } return false; } /** * @brief Checks that email is an actual resolvable internet address. * * @param string $addr * @return boolean */ function validate_email($addr) { if(get_config('system', 'disable_email_validation')) return true; if(! strpos($addr, '@')) return false; $h = substr($addr, strpos($addr, '@') + 1); if(($h) && z_dns_check($h, true)) { return true; } return false; } /** * @brief Check $url against our list of allowed sites. * * Wildcards allowed. If allowed_sites is unset return true. * * @param string $url * @return boolean Return true if url is allowed, otherwise return false */ function allowed_url($url) { $h = @parse_url($url); if(! $h) { return false; } $str_allowed = get_config('system', 'allowed_sites'); if(! $str_allowed) return true; $found = false; $host = strtolower($h['host']); // always allow our own site if($host == strtolower($_SERVER['SERVER_NAME'])) return true; $fnmatch = function_exists('fnmatch'); $allowed = explode(',',$str_allowed); if(count($allowed)) { foreach($allowed as $a) { $pat = strtolower(trim($a)); if(($fnmatch && fnmatch($pat,$host)) || ($pat == $host)) { $found = true; break; } } } return $found; } /** * @brief Check if email address is allowed to register here. * * Compare against our list (wildcards allowed). * * @param string $email * @return boolean Returns false if not allowed, true if allowed or if allowed list is * not configured. */ function allowed_email($email) { $domain = strtolower(substr($email, strpos($email, '@') + 1)); if(! $domain) return false; $str_allowed = get_config('system', 'allowed_email'); $str_not_allowed = get_config('system', 'not_allowed_email'); if(! $str_allowed && ! $str_not_allowed) return true; $return = false; $found_allowed = false; $found_not_allowed = false; $fnmatch = function_exists('fnmatch'); $allowed = explode(',', $str_allowed); if(count($allowed)) { foreach($allowed as $a) { $pat = strtolower(trim($a)); if(($fnmatch && fnmatch($pat,$email)) || ($pat == $domain)) { $found_allowed = true; break; } } } $not_allowed = explode(',', $str_not_allowed); if(count($not_allowed)) { foreach($not_allowed as $na) { $pat = strtolower(trim($na)); if(($fnmatch && fnmatch($pat,$email)) || ($pat == $domain)) { $found_not_allowed = true; break; } } } if ($found_allowed) { $return = true; } elseif (!$str_allowed && !$found_not_allowed) { $return = true; } return $return; } function parse_xml_string($s, $strict = true) { if($strict) { if(! strstr($s,'code . ' at ' . $err->line . ':' . $err->column . ' : ' . $err->message, LOGGER_DATA); } libxml_clear_errors(); } return $x; } function sxml2array ( $xmlObject, $out = array () ) { foreach ( (array) $xmlObject as $index => $node ) $out[$index] = ( is_object ( $node ) ) ? sxml2array ( $node ) : $node; return $out; } /** * @brief xml2array() will convert the given XML text to an array in the XML structure. * * Link: http://www.bin-co.com/php/scripts/xml2array/ * Portions significantly re-written by mike@macgirvin.com * (namespaces, lowercase tags, get_attribute default changed, more...) * * Examples: $array = xml2array(file_get_contents('feed.xml')); * $array = xml2array(file_get_contents('feed.xml', true, 1, 'attribute')); * * @param string $contents The XML text * @param boolean $namespaces true or false include namespace information in the returned array as array elements * @param int $get_attributes 1 or 0. If this is 1 the function will get the attributes as well as the tag values - this results in a different array structure in the return value. * @param string $priority Can be 'tag' or 'attribute'. This will change the way the resulting array sturcture. For 'tag', the tags are given more importance. * * @return array The parsed XML in an array form. Use print_r() to see the resulting array structure. */ function xml2array($contents, $namespaces = true, $get_attributes=1, $priority = 'attribute') { if(!$contents) return array(); if(!function_exists('xml_parser_create')) { logger('xml2array: parser function missing'); return array(); } libxml_use_internal_errors(true); libxml_clear_errors(); if($namespaces) $parser = @xml_parser_create_ns("UTF-8",':'); else $parser = @xml_parser_create(); if(! $parser) { logger('xml2array: xml_parser_create: no resource'); return array(); } xml_parser_set_option($parser, XML_OPTION_TARGET_ENCODING, "UTF-8"); // http://minutillo.com/steve/weblog/2004/6/17/php-xml-and-character-encodings-a-tale-of-sadness-rage-and-data-loss xml_parser_set_option($parser, XML_OPTION_CASE_FOLDING, 0); xml_parser_set_option($parser, XML_OPTION_SKIP_WHITE, 1); @xml_parse_into_struct($parser, trim($contents), $xml_values); @xml_parser_free($parser); if(! $xml_values) { logger('xml2array: libxml: parse error: ' . $contents, LOGGER_DATA); foreach(libxml_get_errors() as $err) logger('libxml: parse: ' . $err->code . " at " . $err->line . ":" . $err->column . " : " . $err->message, LOGGER_DATA); libxml_clear_errors(); return; } //Initializations $xml_array = array(); $parents = array(); $opened_tags = array(); $arr = array(); $current = &$xml_array; // Reference // Go through the tags. $repeated_tag_index = array(); // Multiple tags with same name will be turned into an array foreach($xml_values as $data) { unset($attributes,$value); // Remove existing values, or there will be trouble // This command will extract these variables into the foreach scope // tag(string), type(string), level(int), attributes(array). extract($data); // We could use the array by itself, but this cooler. $result = array(); $attributes_data = array(); if(isset($value)) { if($priority == 'tag') $result = $value; else $result['value'] = $value; // Put the value in a assoc array if we are in the 'Attribute' mode } //Set the attributes too. if(isset($attributes) and $get_attributes) { foreach($attributes as $attr => $val) { if($priority == 'tag') $attributes_data[$attr] = $val; else $result['@attributes'][$attr] = $val; // Set all the attributes in a array called 'attr' } } // See tag status and do the needed. if($namespaces && strpos($tag,':')) { $namespc = substr($tag,0,strrpos($tag,':')); $tag = strtolower(substr($tag,strlen($namespc)+1)); $result['@namespace'] = $namespc; } $tag = strtolower($tag); if($type == "open") { // The starting of the tag '' $parent[$level-1] = &$current; if(!is_array($current) or (!in_array($tag, array_keys($current)))) { // Insert New tag $current[$tag] = $result; if($attributes_data) $current[$tag. '_attr'] = $attributes_data; $repeated_tag_index[$tag.'_'.$level] = 1; $current = &$current[$tag]; } else { // There was another element with the same tag name if(isset($current[$tag][0])) { // If there is a 0th element it is already an array $current[$tag][$repeated_tag_index[$tag.'_'.$level]] = $result; $repeated_tag_index[$tag.'_'.$level]++; } else { // This section will make the value an array if multiple tags with the same name appear together $current[$tag] = array($current[$tag],$result); // This will combine the existing item and the new item together to make an array $repeated_tag_index[$tag.'_'.$level] = 2; if(isset($current[$tag.'_attr'])) { // The attribute of the last(0th) tag must be moved as well $current[$tag]['0_attr'] = $current[$tag.'_attr']; unset($current[$tag.'_attr']); } } $last_item_index = $repeated_tag_index[$tag.'_'.$level]-1; $current = &$current[$tag][$last_item_index]; } } elseif($type == "complete") { // Tags that ends in 1 line '' //See if the key is already taken. if(!isset($current[$tag])) { //New Key $current[$tag] = $result; $repeated_tag_index[$tag.'_'.$level] = 1; if($priority == 'tag' and $attributes_data) $current[$tag. '_attr'] = $attributes_data; } else { // If taken, put all things inside a list(array) if(isset($current[$tag][0]) and is_array($current[$tag])) { // If it is already an array... // ...push the new element into that array. $current[$tag][$repeated_tag_index[$tag.'_'.$level]] = $result; if($priority == 'tag' and $get_attributes and $attributes_data) { $current[$tag][$repeated_tag_index[$tag.'_'.$level] . '_attr'] = $attributes_data; } $repeated_tag_index[$tag.'_'.$level]++; } else { // If it is not an array... $current[$tag] = array($current[$tag],$result); //...Make it an array using using the existing value and the new value $repeated_tag_index[$tag.'_'.$level] = 1; if($priority == 'tag' and $get_attributes) { if(isset($current[$tag.'_attr'])) { // The attribute of the last(0th) tag must be moved as well $current[$tag]['0_attr'] = $current[$tag.'_attr']; unset($current[$tag.'_attr']); } if($attributes_data) { $current[$tag][$repeated_tag_index[$tag.'_'.$level] . '_attr'] = $attributes_data; } } $repeated_tag_index[$tag.'_'.$level]++; // 0 and 1 indexes are already taken } } } elseif($type == 'close') { // End of tag '' $current = &$parent[$level-1]; } } return($xml_array); } function email_header_encode($in_str, $charset = 'UTF-8', $header = 'Subject') { $out_str = $in_str; $need_to_convert = false; for($x = 0; $x < strlen($in_str); $x ++) { if((ord($in_str[$x]) == 0) || ((ord($in_str[$x]) > 128))) { $need_to_convert = true; break; } } if(! $need_to_convert) return $in_str; if ($out_str && $charset) { // define start delimimter, end delimiter and spacer $end = "?="; $start = "=?" . $charset . "?B?"; $spacer = $end . PHP_EOL . " " . $start; // determine length of encoded text within chunks // and ensure length is even $length = 75 - strlen($start) - strlen($end) - (strlen($header) + 2); /* [EDIT BY danbrown AT php DOT net: The following is a bugfix provided by (gardan AT gmx DOT de) on 31-MAR-2005 with the following note: "This means: $length should not be even, but divisible by 4. The reason is that in base64-encoding 3 8-bit-chars are represented by 4 6-bit-chars. These 4 chars must not be split between two encoded words, according to RFC-2047. */ $length = $length - ($length % 4); // encode the string and split it into chunks // with spacers after each chunk $out_str = base64_encode($out_str); $out_str = chunk_split($out_str, $length, $spacer); // remove trailing spacer and // add start and end delimiters $spacer = preg_quote($spacer,'/'); $out_str = preg_replace("/" . $spacer . "$/", "", $out_str); $out_str = $start . $out_str . $end; } return $out_str; } /** * @brief Creates an xchan entry for URL. * * @param string $url URL to discover * @param array $arr fallback values if scrape_feed() is empty * * @return boolean */ function discover_by_url($url, $arr = null) { $x = scrape_feed($url); if(! $x) { if(! $arr) return false; $network = (($arr['network']) ? $arr['network'] : 'unknown'); $name = (trim($arr['name']) ? trim($arr['name']) : 'unknown'); $photo = (($arr['photo']) ? $arr['photo'] : ''); $addr = (($arr['addr']) ? $arr['addr'] : ''); $guid = $url; } $profile = $url; logger('scrape_feed results: ' . print_r($x,true)); if($x['feed_atom']) $guid = $x['feed_atom']; if($x['feed_rss']) $guid = $x['feed_rss']; if(! $guid) return false; // try and discover stuff from the feeed $feed = new SimplePie(); $level = 0; $x = z_fetch_url($guid, false, $level, array('novalidate' => true)); if(! $x['success']) { logger('Feed fetch failed for ' . $guid); return false; } $xml = $x['body']; logger('Fetch feed: ' . $guid . ' returns: ' . $xml, LOGGER_DATA); logger('scrape_feed: headers: ' . $x['header'], LOGGER_DATA); // Don't try and parse an empty string $feed->set_raw_data(($xml) ? $xml : ''); $feed->init(); if($feed->error()) logger('scrape_feed: Error parsing XML: ' . $feed->error()); $name = unxmlify(trim($feed->get_title())); $photo = $feed->get_image_url(); $author = $feed->get_author(); if($author) { if(! $name) $name = unxmlify(trim($author->get_name())); if(! $name) { $name = trim(unxmlify($author->get_email())); if(strpos($name,'@') !== false) $name = substr($name,0,strpos($name,'@')); } if(! $profile && $author->get_link()) $profile = trim(unxmlify($author->get_link())); if(! $photo) { $rawtags = $feed->get_feed_tags( SIMPLEPIE_NAMESPACE_ATOM_10, 'author'); if($rawtags) { $elems = $rawtags[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]; if((x($elems,'link')) && ($elems['link'][0]['attribs']['']['rel'] === 'photo')) $photo = $elems['link'][0]['attribs']['']['href']; } } } else { $item = $feed->get_item(0); if($item) { $author = $item->get_author(); if($author) { if(! $name) { $name = trim(unxmlify($author->get_name())); if(! $name) $name = trim(unxmlify($author->get_email())); if(strpos($name,'@') !== false) $name = substr($name,0,strpos($name,'@')); } if(! $profile && $author->get_link()) $profile = trim(unxmlify($author->get_link())); } if(! $photo) { $rawmedia = $item->get_item_tags('http://search.yahoo.com/mrss/', 'thumbnail'); if($rawmedia && $rawmedia[0]['attribs']['']['url']) $photo = unxmlify($rawmedia[0]['attribs']['']['url']); } if(! $photo) { $rawtags = $item->get_item_tags( SIMPLEPIE_NAMESPACE_ATOM_10, 'author'); if($rawtags) { $elems = $rawtags[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_10]; if((x($elems,'link')) && ($elems['link'][0]['attribs']['']['rel'] === 'photo')) $photo = $elems['link'][0]['attribs']['']['href']; } } } } if($guid === $profile) $lnk = $feed->get_permalink(); if(isset($lnk) && strlen($lnk)) $profile = $lnk; if(! $network) { $network = 'rss'; } if(! $name) $name = notags($feed->get_description()); if(! trim($name)) $name = 'unknown'; $r = q("select * from xchan where xchan_hash = '%s' limit 1", dbesc($guid) ); if($r) return true; if(! $photo) $photo = z_root() . '/images/rss_icon.png'; $r = xchan_store_lowlevel( [ 'xchan_hash' => $guid, 'xchan_guid' => $guid, 'xchan_addr' => $addr, 'xchan_url' => $profile, 'xchan_name' => $name, 'xchan_name_date' => datetime_convert(), 'xchan_network' => $network ] ); $photos = import_xchan_photo($photo,$guid); $r = q("update xchan set xchan_photo_date = '%s', xchan_photo_l = '%s', xchan_photo_m = '%s', xchan_photo_s = '%s', xchan_photo_mimetype = '%s' where xchan_hash = '%s'", dbesc(datetime_convert()), dbesc($photos[0]), dbesc($photos[1]), dbesc($photos[2]), dbesc($photos[3]), dbesc($guid) ); return true; } /** * @brief * * @param string $webbie (TODO: explain) * @param string $protocol (optional) default empty * @return boolean|string (TODO: explain) */ function discover_by_webbie($webbie, $protocol = '') { $result = []; $network = null; $x = webfinger_rfc7033($webbie, true); if($x && array_key_exists('links',$x) && is_array($x['links'])) { foreach($x['links'] as $link) { if(array_key_exists('rel',$link)) { if($link['rel'] === PROTOCOL_ZOT6 && ((! $protocol) || (strtolower($protocol) === 'zot6'))) { logger('zot6 found for ' . $webbie, LOGGER_DEBUG); $record = Zotfinger::exec($link['href']); if (! $record) { logger('Record not found for ' . $link['href']); continue; } // Check the HTTP signature $hsig = $record['signature']; if($hsig && $hsig['signer'] === $link['href'] && $hsig['header_valid'] === true && $hsig['content_valid'] === true) $hsig_valid = true; if(! $hsig_valid) { logger('http signature not valid: ' . print_r($hsig,true)); continue; } $y = Libzot::import_xchan($record['data']); if($y['success']) { return $y['hash']; } } } } } logger('webfinger: ' . print_r($x,true), LOGGER_DATA, LOG_INFO); $arr = [ 'address' => $webbie, 'protocol' => $protocol, 'success' => false, 'xchan' => '', 'webfinger' => $x ]; /** * @hooks discover_channel_webfinger * Called when performing a webfinger lookup. * * \e string \b address - The webbie * * \e string \b protocol * * \e array \b webfinger - The result from webfinger_rfc7033() * * \e boolean \b success - The return value, default false */ call_hooks('discover_channel_webfinger', $arr); if($arr['success']) return $arr['xchan']; return false; } /** * @brief Fetch and return a webfinger for a webbie. * * @param string $webbie - The webbie * @param boolean $zot (optional) default false * @return boolean|string false or associative array from result JSON */ function webfinger_rfc7033($webbie, $zot = false) { if(filter_var($webbie, FILTER_VALIDATE_EMAIL)) { $lhs = substr($webbie,0,strpos($webbie,'@')); $rhs = substr($webbie,strpos($webbie,'@')+1); $resource = urlencode('acct:' . $webbie); } elseif(filter_var($webbie, FILTER_VALIDATE_URL)) { $m = parse_url($webbie); if($m) { if($m['scheme'] !== 'https') return false; $rhs = $m['host'] . (array_key_exists('port', $m) ? ':' . $m['port'] : ''); $resource = urlencode($webbie); } } else return false; logger('fetching url from resource: ' . $rhs . ':' . $webbie); $counter = 0; $s = z_fetch_url('https://' . $rhs . '/.well-known/webfinger?f=&resource=' . $resource . (($zot) ? '&zot=1' : ''), false, $counter, [ 'headers' => [ 'Accept: application/jrd+json, application/json, */*' ] ]); if($s['success']) { $j = json_decode($s['body'], true); return($j); } return false; } function old_webfinger($webbie) { $host = ''; if(filter_var($webbie, FILTER_VALIDATE_EMAIL)) $host = substr($webbie,strpos($webbie,'@') + 1); if(strlen($host)) { $tpl = fetch_lrdd_template($host); logger('old_webfinger: lrdd template: ' . $tpl,LOGGER_DATA); if(strlen($tpl)) { $pxrd = str_replace('{uri}', urlencode('acct:' . $webbie), $tpl); logger('old_webfinger: pxrd: ' . $pxrd,LOGGER_DATA); $links = fetch_xrd_links($pxrd); if(! count($links)) { // try with double slashes $pxrd = str_replace('{uri}', urlencode('acct://' . $webbie), $tpl); logger('old_webfinger: pxrd: ' . $pxrd,LOGGER_DATA); $links = fetch_xrd_links($pxrd); } return $links; } } return array(); } function fetch_lrdd_template($host) { $tpl = ''; $url1 = 'https://' . $host . '/.well-known/host-meta' ; $url2 = 'http://' . $host . '/.well-known/host-meta' ; $links = fetch_xrd_links($url1); logger('fetch_lrdd_template from: ' . $url1, LOGGER_DEBUG); logger('template (https): ' . print_r($links,true),LOGGER_DEBUG); if(! count($links)) { logger('fetch_lrdd_template from: ' . $url2); $links = fetch_xrd_links($url2); logger('template (http): ' . print_r($links,true),LOGGER_DEBUG); } if(count($links)) { foreach($links as $link) if($link['@attributes']['rel'] && $link['@attributes']['rel'] === 'lrdd' && (!$link['@attributes']['type'] || $link['@attributes']['type'] === 'application/xrd+xml')) $tpl = $link['@attributes']['template']; } if(! strpos($tpl,'{uri}')) $tpl = ''; return $tpl; } function fetch_xrd_links($url) { logger('url: ' . $url, LOGGER_DEBUG); $redirects = 0; $x = z_fetch_url($url,false,$redirects,array('timeout' => 20)); if(! $x['success']) return array(); $xml = $x['body']; logger('data: ' . $xml, LOGGER_DATA); if ((! $xml) || (! stristr($xml,' 'alias' , 'href' => $alias); } } } if(isset($arr['xrd']['subject'])) { $links[]['@attributes'] = array('rel' => 'subject' , 'href' => $arr['xrd']['subject']); } logger('data: ' . print_r($links, true), LOGGER_DATA); return $links; } /** * @brief * * @param string $url The URL to scrape * @return array */ function scrape_feed($url) { $ret = array(); $level = 0; $x = z_fetch_url($url,false,$level,array('novalidate' => true)); if(! $x['success']) { logger('ERROR fetching URL'); return $ret; } $headers = $x['header']; $code = $x['return_code']; $s = $x['body']; logger('returns: ' . $code . ' headers=' . $headers, LOGGER_DEBUG); if(! $s) { logger('No data returned for ' . $url); return $ret; } $lines = explode("\n", $headers); if(count($lines)) { foreach($lines as $line) { if(stristr($line,'content-type:')) { if(stristr($line,'application/atom+xml') || stristr($s,'')) { $ret['feed_rss'] = $url; return $ret; } } $dom = new DOMDocument(); try { $dom->loadHTML( $s); } catch (DOMException $e) { logger('Feed parse error: ' . $e); // logger('Feed parse ERROR: ' . libxml_get_last_error()->message); return $ret; } $head = $dom->getElementsByTagName('base'); if($head) { foreach($head as $head0) { $basename = $head0->getAttribute('href'); break; } } if(! $basename) $basename = implode('/', array_slice(explode('/',$url),0,3)) . '/'; $items = $dom->getElementsByTagName('link'); // get Atom/RSS link elements, take the first one of either. if($items) { foreach($items as $item) { $x = $item->getAttribute('rel'); if(($x === 'alternate') && ($item->getAttribute('type') === 'application/atom+xml')) { if(! x($ret,'feed_atom')) $ret['feed_atom'] = $item->getAttribute('href'); } if(($x === 'alternate') && ($item->getAttribute('type') === 'application/rss+xml')) { if(! x($ret,'feed_rss')) $ret['feed_rss'] = $item->getAttribute('href'); } } } // Drupal and perhaps others only provide relative URL's. Turn them into absolute. if(x($ret,'feed_atom') && (! strstr($ret['feed_atom'],'://'))) $ret['feed_atom'] = $basename . $ret['feed_atom']; if(x($ret,'feed_rss') && (! strstr($ret['feed_rss'],'://'))) $ret['feed_rss'] = $basename . $ret['feed_rss']; return $ret; } function do_delivery($deliveries, $force = false) { // $force is set if a site that wasn't responding suddenly returns to life. // Try and shove through everything going to that site while it's responding. if(! (is_array($deliveries) && count($deliveries))) return; /* $x = q("select count(outq_hash) as total from outq where outq_delivered = 0"); if(intval($x[0]['total']) > intval(get_config('system','force_queue_threshold',3000)) && (! $force)) { logger('immediate delivery deferred.', LOGGER_DEBUG, LOG_INFO); foreach($deliveries as $d) { Queue::update($d); } return; } $interval = ((get_config('system','delivery_interval') !== false) ? intval(get_config('system','delivery_interval')) : 2 ); */ $deliveries_per_process = intval(get_config('system','delivery_batch_count')); if($deliveries_per_process <= 0) $deliveries_per_process = 1; $deliver = []; foreach($deliveries as $d) { if(! $d) continue; $deliver[] = $d; if(count($deliver) >= $deliveries_per_process) { Zotlabs\Daemon\Master::Summon(['Deliver', $deliver]); $deliver = []; /* if($interval) @time_sleep_until(microtime(true) + (float) $interval); */ } } // catch any stragglers if($deliver) { Zotlabs\Daemon\Master::Summon(['Deliver', $deliver]); } } function get_site_info() { $register_policy = Array('REGISTER_CLOSED', 'REGISTER_APPROVE', 'REGISTER_OPEN'); $directory_mode = Array('DIRECTORY_MODE_NORMAL', 'DIRECTORY_MODE_PRIMARY', 'DIRECTORY_MODE_SECONDARY', 256 => 'DIRECTORY_MODE_STANDALONE'); $sql_extra = ''; $r = q("select * from channel left join account on account_id = channel_account_id where ( account_roles & 4096 )>0 and account_default_channel = channel_id"); if($r) { $admin = array(); foreach($r as $rr) { if($rr['channel_pageflags'] & PAGE_HUBADMIN) $admin[] = array( 'name' => $rr['channel_name'], 'address' => channel_reddress($rr), 'channel' => z_root() . '/channel/' . $rr['channel_address']); } if(! $admin) { foreach($r as $rr) { $admin[] = array( 'name' => $rr['channel_name'], 'address' => channel_reddress($rr), 'channel' => z_root() . '/channel/' . $rr['channel_address']); } } } else { $admin = false; } $def_service_class = get_config('system','default_service_class'); if($def_service_class) $service_class = get_config('service_class',$def_service_class); else $service_class = false; $visible_plugins = visible_plugin_list(); if(@is_dir('.git') && function_exists('shell_exec')) $commit = trim(@shell_exec('git log -1 --format="%h"')); if(! isset($commit) || strlen($commit) > 16) $commit = ''; $site_info = get_config('system','info'); $site_name = get_config('system','sitename'); if(! get_config('system','hidden_version_siteinfo')) { $version = Zotlabs\Lib\System::get_project_version(); $tag = Zotlabs\Lib\System::get_std_version(); if(@is_dir('.git') && function_exists('shell_exec')) { $commit = trim( @shell_exec('git log -1 --format="%h"')); } if(! isset($commit) || strlen($commit) > 16) $commit = ''; } else { $version = $commit = ''; } //Statistics $channels_total_stat = intval(get_config('system','channels_total_stat')); $channels_active_halfyear_stat = intval(get_config('system','channels_active_halfyear_stat')); $channels_active_monthly_stat = intval(get_config('system','channels_active_monthly_stat')); $local_posts_stat = intval(get_config('system','local_posts_stat')); $local_comments_stat = intval(get_config('system','local_comments_stat')); $hide_in_statistics = intval(get_config('system','hide_in_statistics')); $site_expire = intval(get_config('system', 'default_expire_days')); load_config('feature_lock'); $locked_features = array(); if(is_array(App::$config['feature_lock']) && count(App::$config['feature_lock'])) { foreach(App::$config['feature_lock'] as $k => $v) { if($k === 'config_loaded') continue; $locked_features[$k] = intval($v); } } $data = [ 'url' => z_root(), 'platform' => Zotlabs\Lib\System::get_platform_name(), 'site_name' => (($site_name) ? $site_name : ''), 'version' => $version, 'version_tag' => $tag, 'server_role' => Zotlabs\Lib\System::get_server_role(), 'commit' => $commit, 'plugins' => $visible_plugins, 'register_policy' => $register_policy[get_config('system','register_policy')], 'invitation_only' => (bool) intval(get_config('system','invitation_only')), 'directory_mode' => $directory_mode[get_config('system','directory_mode')], 'directory_server' => get_config('system','directory_server'), 'language' => get_config('system','language'), 'rss_connections' => (bool) intval(get_config('system','feed_contacts')), 'expiration' => $site_expire, 'default_service_restrictions' => $service_class, 'locked_features' => $locked_features, 'admin' => $admin, 'dbdriver' => DBA::$dba->getdriver() . ' ' . ((ACTIVE_DBTYPE == DBTYPE_POSTGRES) ? 'postgres' : 'mysql'), 'lastpoll' => get_config('system','lastpoll'), 'info' => (($site_info) ? $site_info : ''), 'channels_total' => $channels_total_stat, 'hide_in_statistics' => $hide_in_statistics ]; if(! $hide_in_statistics) { $data['channels_active_halfyear'] = $channels_active_halfyear_stat; $data['channels_active_monthly'] = $channels_active_monthly_stat; $data['local_posts'] = $local_posts_stat; $data['local_comments'] = $local_comments_stat; } return $data; } /** * @brief * * @param string $url * @return boolean */ function check_siteallowed($url) { $retvalue = true; $arr = array('url' => $url); /** * @hooks check_siteallowed * Used to over-ride or bypass the site black/white block lists. * * \e string \b url * * \e boolean \b allowed - optional return value set in hook */ call_hooks('check_siteallowed', $arr); if(array_key_exists('allowed',$arr)) return $arr['allowed']; $bl1 = get_config('system','whitelisted_sites'); if(is_array($bl1) && $bl1) { foreach($bl1 as $bl) { if($bl1 === '*') $retvalue = true; if($bl && strpos($url,$bl) !== false) return true; } } $bl1 = get_config('system','blacklisted_sites'); if(is_array($bl1) && $bl1) { foreach($bl1 as $bl) { if($bl1 === '*') $retvalue = false; if($bl && strpos($url,$bl) !== false) { return false; } } } return $retvalue; } /** * @brief * * @param string $hash * @return boolean */ function check_channelallowed($hash) { $retvalue = true; $arr = array('hash' => $hash); /** * @hooks check_channelallowed * Used to over-ride or bypass the channel black/white block lists. * * \e string \b hash * * \e boolean \b allowed - optional return value set in hook */ call_hooks('check_channelallowed', $arr); if(array_key_exists('allowed',$arr)) return $arr['allowed']; $bl1 = get_config('system','whitelisted_channels'); if(is_array($bl1) && $bl1) { foreach($bl1 as $bl) { if($bl1 === '*') $retvalue = true; if($bl && strpos($hash,$bl) !== false) return true; } } $bl1 = get_config('system','blacklisted_channels'); if(is_array($bl1) && $bl1) { foreach($bl1 as $bl) { if($bl1 === '*') $retvalue = false; if($bl && strpos($hash,$bl) !== false) { return false; } } } return $retvalue; } function deliverable_singleton($channel_id,$xchan) { if(array_key_exists('xchan_hash',$xchan)) $xchan_hash = $xchan['xchan_hash']; elseif(array_key_exists('hubloc_hash',$xchan)) $xchan_hash = $xchan['hubloc_hash']; else return true; $r = q("select abook_instance from abook where abook_channel = %d and abook_xchan = '%s' limit 1", intval($channel_id), dbesc($xchan_hash) ); if($r) { if(! $r[0]['abook_instance']) return true; if(strpos($r[0]['abook_instance'],z_root()) !== false) return true; } return false; } function get_repository_version($branch = 'master') { $path = "https://framagit.org/hubzilla/core/raw/$branch/boot.php"; $x = z_fetch_url($path); if($x['success']) { $y = preg_match('/define(.*?)STD_VERSION(.*?)([0-9.].*)\'/',$x['body'],$matches); if($y) return $matches[3]; } return '?.?'; } /** * @brief Get translated network name. * * @param string $s Network string, see boot.php * @return string Translated name of the network */ function network_to_name($s) { $nets = array( NETWORK_DFRN => t('Friendica'), NETWORK_FRND => t('Friendica'), NETWORK_OSTATUS => t('OStatus'), NETWORK_GNUSOCIAL => t('GNU-Social'), NETWORK_FEED => t('RSS/Atom'), NETWORK_ACTIVITYPUB => t('ActivityPub'), NETWORK_MAIL => t('Email'), NETWORK_DIASPORA => t('Diaspora'), NETWORK_FACEBOOK => t('Facebook'), NETWORK_ZOT => t('Zot'), NETWORK_LINKEDIN => t('LinkedIn'), NETWORK_XMPP => t('XMPP/IM'), NETWORK_MYSPACE => t('MySpace'), ); /** * @hooks network_to_name * @deprecated */ call_hooks('network_to_name', $nets); $search = array_keys($nets); $replace = array_values($nets); return str_replace($search, $replace, $s); } /** * @brief Send a text email message. * * @param array $params an associative array with: * * \e string \b fromName name of the sender * * \e string \b fromEmail email of the sender * * \e string \b replyTo replyTo address to direct responses * * \e string \b toEmail destination email address * * \e string \b messageSubject subject of the message * * \e string \b htmlVersion html version of the message * * \e string \b textVersion text only version of the message * * \e string \b additionalMailHeader additions to the smtp mail header */ function z_mail($params) { if(! $params['fromEmail']) { $params['fromEmail'] = get_config('system','from_email'); if(! $params['fromEmail']) $params['fromEmail'] = 'Administrator' . '@' . App::get_hostname(); } if(! $params['fromName']) { $params['fromName'] = get_config('system','from_email_name'); if(! $params['fromName']) $params['fromName'] = Zotlabs\Lib\System::get_site_name(); } if(! $params['replyTo']) { $params['replyTo'] = get_config('system','reply_address'); if(! $params['replyTo']) $params['replyTo'] = 'noreply' . '@' . App::get_hostname(); } $params['sent'] = false; $params['result'] = false; /** * @hooks email_send * * \e params @see z_mail() */ call_hooks('email_send', $params); if($params['sent']) { logger('notification: z_mail returns ' . (($params['result']) ? 'success' : 'failure'), LOGGER_DEBUG); return $params['result']; } $fromName = email_header_encode(html_entity_decode($params['fromName'],ENT_QUOTES,'UTF-8'),'UTF-8'); $messageSubject = email_header_encode(html_entity_decode($params['messageSubject'],ENT_QUOTES,'UTF-8'),'UTF-8'); $messageHeader = $params['additionalMailHeader'] . "From: $fromName <{$params['fromEmail']}>" . PHP_EOL . "Reply-To: $fromName <{$params['replyTo']}>" . PHP_EOL . "Content-Type: text/plain; charset=UTF-8"; // send the message $res = mail( $params['toEmail'], // send to address $messageSubject, // subject $params['textVersion'], $messageHeader // message headers ); logger('notification: z_mail returns ' . (($res) ? 'success' : 'failure'), LOGGER_DEBUG); return $res; } /** * @brief Discover the best API path available for redmatrix/hubzilla servers. * * @param string $host * @return string */ function probe_api_path($host) { $schemes = ['https', 'http' ]; $paths = ['/api/z/1.0/version', '/api/red/version' ]; foreach($schemes as $scheme) { foreach($paths as $path) { $curpath = $scheme . '://' . $host . $path; $x = z_fetch_url($curpath); if($x['success'] && ! strpos($x['body'], 'not implemented')) return str_replace('version', '', $curpath); } } return ''; } function scrape_vcard($url) { $ret = array(); logger('url=' . $url); $x = z_fetch_url($url); if(! $x['success']) { logger('ERROR fetching URL'); return $ret; } $s = $x['body']; if(! $s) return $ret; $headers = $x['header']; $lines = explode("\n",$headers); if(count($lines)) { foreach($lines as $line) { // don't try and run feeds through the html5 parser if(stristr($line,'content-type:') && ((stristr($line,'application/atom+xml')) || (stristr($line,'application/rss+xml')))) return ret; } } $dom = new DOMDocument(); try { $dom->loadHTML( $s); } catch (DOMException $e) { logger('hCard parse error: ' . $e); // logger('hCard fetch ERROR: ' . libxml_get_last_error()->message); return $ret; } // Pull out hCard profile elements $largest_photo = 0; $items = $dom->getElementsByTagName('*'); foreach($items as $item) { if(attribute_contains($item->getAttribute('class'), 'vcard')) { $level2 = $item->getElementsByTagName('*'); foreach($level2 as $x) { if(attribute_contains($x->getAttribute('id'),'pod_location')) $ret['pod_location'] = escape_tags($x->textContent); if(attribute_contains($x->getAttribute('class'),'fn')) $ret['fn'] = escape_tags($x->textContent); if(attribute_contains($x->getAttribute('class'),'uid')) $ret['uid'] = escape_tags($x->textContent); if(attribute_contains($x->getAttribute('class'),'nickname')) $ret['nick'] = escape_tags($x->textContent); if(attribute_contains($x->getAttribute('class'),'searchable')) $ret['searchable'] = escape_tags($x->textContent); if(attribute_contains($x->getAttribute('class'),'key')) $ret['public_key'] = $x->textContent; if(attribute_contains($x->getAttribute('class'),'given_name')) $ret['given_name'] = escape_tags($x->textContent); if(attribute_contains($x->getAttribute('class'),'family_name')) $ret['family_name'] = escape_tags($x->textContent); if(attribute_contains($x->getAttribute('class'),'url')) $ret['url'] = escape_tags($x->textContent); if((attribute_contains($x->getAttribute('class'),'photo')) || (attribute_contains($x->getAttribute('class'),'avatar'))) { $size = intval($x->getAttribute('width')); if(($size > $largest_photo) || (! $largest_photo)) { $ret['photo'] = $x->getAttribute('src'); $largest_photo = $size; } } } } } return $ret; } function service_plink($contact, $guid) { $plink = ''; $m = parse_url($contact['xchan_url']); if($m) { $url = $m['scheme'] . '://' . $m['host'] . (array_key_exists('port', $m) ? ':' . $m['port'] : ''); } else { $url = 'https://' . substr($contact['xchan_addr'], strpos($contact['xchan_addr'], '@') + 1); } $handle = substr($contact['xchan_addr'], 0, strpos($contact['xchan_addr'],'@')); $plink = $url . '/channel/' . $handle . '?f=&mid=' . $guid; $x = [ 'xchan' => $contact, 'guid' => $guid, 'url' => $url, 'plink' => $plink ]; /** * @hooks service_plink * * \e array \b xchan * * \e string \b guid * * \e string \b url * * \e string \b plink will get returned */ call_hooks('service_plink', $x); return $x['plink']; } /** * @brief * * @param array $mimeTypes * @param string $acceptedTypes by default false will use $_SERVER['HTTP_ACCEPT'] * @return array|NULL */ function getBestSupportedMimeType($mimeTypes = null, $acceptedTypes = false) { // Values will be stored in this array $AcceptTypes = []; if($acceptedTypes === false) $acceptedTypes = $_SERVER['HTTP_ACCEPT'] ?? ''; if (!$acceptedTypes) { return null; } // Accept header is case insensitive, and whitespace isn’t important $accept = strtolower(str_replace(' ', '', $acceptedTypes)); // divide it into parts in the place of a "," $accept = explode(',', $accept); foreach ($accept as $a) { // the default quality is 1. $q = 1; // check if there is a different quality if (strpos($a, ';q=')) { // divide "mime/type;q=X" into two parts: "mime/type" i "X" [$a, $q] = explode(';q=', $a); } // mime-type $a is accepted with the quality $q // WARNING: $q == 0 means, that mime-type isn’t supported! $AcceptTypes[$a] = $q; } arsort($AcceptTypes); // if no parameter was passed, just return parsed data if (!$mimeTypes) return $AcceptTypes; $mimeTypes = array_map('strtolower', (array)$mimeTypes); // let’s check our supported types: foreach ($AcceptTypes as $mime => $q) { if ($q && in_array($mime, $mimeTypes)) return $mime; } // no mime-type found return null; } /** * @brief Perform caching for jsonld normaliser. * * @param string $url * @return mixed|boolean|array */ function jsonld_document_loader($url) { switch ($url) { case 'https://www.w3.org/ns/activitystreams': $url = z_root() . '/library/w3org/activitystreams.jsonld'; break; case 'https://w3id.org/identity/v1': $url = z_root() . '/library/w3org/identity-v1.jsonld'; break; case 'https://w3id.org/security/v1': $url = z_root() . '/library/w3org/security-v1.jsonld'; break; default: logger('URL: ' . $url, LOGGER_DEBUG); break; } require_once('library/jsonld/jsonld.php'); $recursion = 0; $x = debug_backtrace(); if($x) { foreach($x as $n) { if($n['function'] === __FUNCTION__) { $recursion ++; } } } if($recursion > 5) { logger('jsonld bomb detected at: ' . $url); killme(); } $cachepath = 'store/[data]/ldcache'; if(! is_dir($cachepath)) os_mkdir($cachepath, STORAGE_DEFAULT_PERMISSIONS, true); $filename = $cachepath . '/' . urlencode($url); if(file_exists($filename) && filemtime($filename) > time() - (12 * 60 * 60)) { return json_decode(file_get_contents($filename)); } $r = jsonld_default_document_loader($url); if($r) { file_put_contents($filename, json_encode($r)); return $r; } logger('not found'); if(file_exists($filename)) { return json_decode(file_get_contents($filename)); } return []; } /** * @brief Given a URL, return everything after the host portion. * example https://foobar.com/gravy?g=5&y=6 * returns /gravy?g=5&y=6 * result always returns the leading slash */ function get_request_string($url) { $a = explode('/',$url,4); return '/' . ((count($a) > 3) ? $a[3] : EMPTY_STR); } /* * * Takes the output of parse_url and builds a URL from it * */ function unparse_url($parsed_url) { $scheme = isset($parsed_url['scheme']) ? $parsed_url['scheme'] . '://' : ''; $host = isset($parsed_url['host']) ? $parsed_url['host'] : ''; $port = isset($parsed_url['port']) ? ':' . $parsed_url['port'] : ''; $user = isset($parsed_url['user']) ? $parsed_url['user'] : ''; $pass = isset($parsed_url['pass']) ? ':' . $parsed_url['pass'] : ''; $pass = ($user || $pass) ? "$pass@" : ''; $path = isset($parsed_url['path']) ? $parsed_url['path'] : ''; $query = isset($parsed_url['query']) ? '?' . $parsed_url['query'] : ''; $fragment = isset($parsed_url['fragment']) ? '#' . $parsed_url['fragment'] : ''; return "$scheme$user$pass$host$port$path$query$fragment"; }