<?php /** @file */ function get_capath() { return appdirpath() . '/library/cacert.pem'; } /** * @function z_fetch_url * @param string $url * URL to fetch * @param boolean $binary = false * TRUE if asked to return binary results (file download) * @param int $redirects = 0 * internal use, recursion counter * @param array $opts (optional parameters) * 'accept_content' => supply Accept: header with 'accept_content' as the value * 'timeout' => int seconds, default system config value or 60 seconds * 'http_auth' => username:password * 'novalidate' => do not validate SSL certs, default is to validate using our CA list * * @returns array * 'return_code' => HTTP return code or 0 if timeout or failure * 'success' => boolean true (if HTTP 2xx result) or false * 'header' => HTTP headers * 'body' => fetched content */ function z_fetch_url($url, $binary = false, $redirects = 0, $opts = array()) { $ret = array('return_code' => 0, 'success' => false, 'header' => "", 'body' => ""); $a = get_app(); $ch = @curl_init($url); if(($redirects > 8) || (! $ch)) return false; @curl_setopt($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; Red)"); $ciphers = @get_config('system','curl_ssl_ciphers'); if($ciphers) @curl_setopt($ch, CURLOPT_SSL_CIPHER_LIST, $ciphers); if(x($opts,'headers')) @curl_setopt($ch, CURLOPT_HTTPHEADER, $opts['headers']); if(x($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, $opts['http_auth']); } @curl_setopt($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); $header = ''; // Pull out multiple headers, e.g. proxy and continuation headers // allow for HTTP/2.x without fixing code while(preg_match('/^HTTP\/[1-2].+? [1-5][0-9][0-9]/',$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/', $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'] = $header; if(x($opts,'debug')) { $ret['debug'] = $curl_info; } @curl_close($ch); return($ret); } /** * @function z_post_url * @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 $opts (optional parameters) * 'accept_content' => supply Accept: header with 'accept_content' as the value * 'timeout' => int seconds, default system config value or 60 seconds * 'http_auth' => username:password * 'novalidate' => do not validate SSL certs, default is to validate using our CA list * * @returns array * 'return_code' => HTTP return code or 0 if timeout or failure * 'success' => boolean true (if HTTP 2xx result) or false * 'header' => HTTP headers * 'body' => fetched content */ function z_post_url($url,$params, $redirects = 0, $opts = array()) { $ret = array('return_code' => 0, 'success' => false, 'header' => "", 'body' => ""); $ch = curl_init($url); if(($redirects > 8) || (! $ch)) return ret; @curl_setopt($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, "Red"); $ciphers = @get_config('system','curl_ssl_ciphers'); if($ciphers) @curl_setopt($ch, CURLOPT_SSL_CIPHER_LIST, $ciphers); if(x($opts,'headers')) @curl_setopt($ch, CURLOPT_HTTPHEADER, $opts['headers']); if(x($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, $opts['http_auth']); } @curl_setopt($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']; $header = ''; // Pull out multiple headers, e.g. proxy and continuation headers // allow for HTTP/2.x without fixing code while(preg_match('/^HTTP\/[1-2].+? [1-5][0-9][0-9]/',$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/', $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); 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'] = $header; if(x($opts,'debug')) { $ret['debug'] = $curl_info; } curl_close($ch); return($ret); } function z_post_url_json($url,$params,$redirects = 0, $opts = array()) { $opts = array_merge($opts,array('headers' => array('Content-Type: application/json'))); return z_post_url($url,json_encode($params),$redirects,$opts); } function json_return_and_die($x) { header("content-type: application/json"); echo json_encode($x); killme(); } // Generic XML return // Outputs a basic dfrn XML status structure to STDOUT, with a <status> variable // of $st and an optional text <message> of $message and terminates the current process. function xml_status($st, $message = '') { $xml_message = ((strlen($message)) ? "\t<message>" . xmlify($message) . "</message>\r\n" : ''); if($st) logger('xml_status returning non_zero: ' . $st . " message=" . $message); header( "Content-type: text/xml" ); echo '<?xml version="1.0" encoding="UTF-8"?>'."\r\n"; echo "<result>\r\n\t<status>$st</status>\r\n$xml_message</result>\r\n"; killme(); } /** * @function http_status_exit * * Send HTTP status header and exit * @param int $val * integer HTTP status result value * @param string $msg * optional message * @returns (does not return, process is terminated) */ function http_status_exit($val,$msg = '') { $err = ''; if($val >= 400) $msg = (($msg) ? $msg : 'Error'); if($val >= 200 && $val < 300) $msg = (($msg) ? $msg : 'OK'); logger('http_status_exit ' . $val . ' ' . $msg); header($_SERVER['SERVER_PROTOCOL'] . ' ' . $val . ' ' . $msg); killme(); } // convert an XML document to a normalised, case-corrected array // used by webfinger function convert_xml_element_to_array($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($xml_element))); } } // Take a URL from the wild, prepend http:// if necessary // and check DNS to see if it's real (or check if is a valid IP address) // return true if it's OK, false if something is wrong with it function validate_url(&$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(($h) && (@dns_get_record($h['host'], DNS_A + DNS_CNAME + DNS_PTR) || filter_var($h['host'], FILTER_VALIDATE_IP) )) { return true; } return false; } // checks that email is an actual resolvable internet address function validate_email($addr) { if(get_config('system','disable_email_validation')) return true; if(! strpos($addr,'@')) return false; $h = substr($addr,strpos($addr,'@') + 1); if(($h) && (@dns_get_record($h, DNS_A + DNS_CNAME + DNS_PTR + DNS_MX) || filter_var($h, FILTER_VALIDATE_IP) )) { return true; } return false; } // Check $url against our list of allowed sites, // wildcards allowed. If allowed_sites is unset return true; // If url is allowed, return true. // otherwise, return false function allowed_url($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 $found; } // check if email address is allowed to register here. // Compare against our list (wildcards allowed). // Returns false if not allowed, true if allowed or if // allowed list is not configured. function allowed_email($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 $return; } function avatar_img($email) { $a = get_app(); $avatar['size'] = 175; $avatar['email'] = $email; $avatar['url'] = ''; $avatar['success'] = false; call_hooks('avatar_lookup', $avatar); if(! $avatar['success']) $avatar['url'] = $a->get_baseurl() . '/' . get_default_profile_photo(); logger('Avatar: ' . $avatar['email'] . ' ' . $avatar['url'], LOGGER_DEBUG); return $avatar['url']; } function parse_xml_string($s,$strict = true) { if($strict) { if(! strstr($s,'<?xml')) return false; $s2 = substr($s,strpos($s,'<?xml')); } else $s2 = $s; libxml_use_internal_errors(true); $x = @simplexml_load_string($s2); if(! $x) { logger('libxml: parse: error: ' . $s2, 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 $x; } function scale_external_images($s, $include_link = true, $scale_replace = false) { $a = get_app(); // Picture addresses can contain special characters $s = htmlspecialchars_decode($s, ENT_COMPAT); $matches = null; $c = preg_match_all('/\[([zi])mg(.*?)\](.*?)\[\/[zi]mg\]/ism',$s,$matches,PREG_SET_ORDER); if($c) { require_once('include/photo/photo_driver.php'); foreach($matches as $mtch) { logger('scale_external_image: ' . $mtch[2] . ' ' . $mtch[3]); if(substr($mtch[1],0,1) == '=') { $owidth = intval(substr($mtch[2],1)); if(intval($owidth) > 0 && intval($owidth) < 640) continue; } $hostname = str_replace('www.','',substr($a->get_baseurl(),strpos($a->get_baseurl(),'://')+3)); if(stristr($mtch[3],$hostname)) continue; // $scale_replace, if passed, is an array of two elements. The // first is the name of the full-size image. The second is the // name of a remote, scaled-down version of the full size image. // This allows Friendica to display the smaller remote image if // one exists, while still linking to the full-size image if($scale_replace) $scaled = str_replace($scale_replace[0], $scale_replace[1], $mtch[3]); else $scaled = $mtch[3]; $i = z_fetch_url($scaled); $cache = get_config('system','itemcache'); if (($cache != '') and is_dir($cache)) { $cachefile = $cache."/".hash("md5", $scaled); file_put_contents($cachefile, $i['body']); } // guess mimetype from headers or filename $type = guess_image_type($mtch[3],$i['header']); if($i['success']) { $ph = photo_factory($i['body'], $type); if($ph->is_valid()) { $orig_width = $ph->getWidth(); $orig_height = $ph->getHeight(); if($orig_width > 640 || $orig_height > 640) { $tag = (($match[1] == 'z') ? 'zmg' : 'img'); $ph->scaleImage(640); $new_width = $ph->getWidth(); $new_height = $ph->getHeight(); logger('scale_external_images: ' . $orig_width . '->' . $new_width . 'w ' . $orig_height . '->' . $new_height . 'h' . ' match: ' . $mtch[0], LOGGER_DEBUG); $s = str_replace($mtch[0],'[' . $tag . '=' . $new_width . 'x' . $new_height. ']' . $scaled . '[/' . $tag . ']' . "\n" . (($include_link) ? '[zrl=' . $mtch[2] . ']' . t('view full size') . '[/zrl]' . "\n" : ''),$s); logger('scale_external_images: new string: ' . $s, LOGGER_DEBUG); } } } } } // replace the special char encoding $s = htmlspecialchars($s,ENT_COMPAT,'UTF-8'); return $s; } /** * 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 for Friendica (namespaces, lowercase tags, get_attribute default changed, more...) * Arguments : $contents - The XML text * $namespaces - true or false include namespace information in the returned array as array elements. * $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. * $priority - Can be 'tag' or 'attribute'. This will change the way the resulting array sturcture. For 'tag', the tags are given more importance. * Return: The parsed XML in an array form. Use print_r() to see the resulting array structure. * Examples: $array = xml2array(file_get_contents('feed.xml')); * $array = xml2array(file_get_contents('feed.xml', true, 1, 'attribute')); */ function xml2array($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 '<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($type == "complete") { // Tags that ends in 1 line '<tag />' //See if the key is already taken. if(!isset($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 '</tag>' $current = &$parent[$level-1]; } } return($xml_array); } function email_header_encode($in_str, $charset = 'UTF-8') { $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; } } if(! $need_to_convert) return $in_str; if ($out_str && $charset) { // define start delimimter, end delimiter and spacer $end = "?="; $start = "=?" . $charset . "?B?"; $spacer = $end . "\r\n " . $start; // determine length of encoded text within chunks // and ensure length is even $length = 75 - strlen($start) - strlen($end); /* [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 $out_str; } function email_send($addr, $subject, $headers, $item) { //$headers .= 'MIME-Version: 1.0' . "\n"; //$headers .= 'Content-Type: text/html; charset=UTF-8' . "\n"; //$headers .= 'Content-Type: text/plain; charset=UTF-8' . "\n"; //$headers .= 'Content-Transfer-Encoding: 8bit' . "\n\n"; $part = uniqid("", true); $html = prepare_body($item); $headers .= "Mime-Version: 1.0\n"; $headers .= 'Content-Type: multipart/alternative; boundary="=_'.$part.'"'."\n\n"; $body = "\n--=_".$part."\n"; $body .= "Content-Transfer-Encoding: 8bit\n"; $body .= "Content-Type: text/plain; charset=utf-8; format=flowed\n\n"; $body .= html2plain($html)."\n"; $body .= "--=_".$part."\n"; $body .= "Content-Transfer-Encoding: 8bit\n"; $body .= "Content-Type: text/html; charset=utf-8\n\n"; $body .= '<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">'.$html."</body></html>\n"; $body .= "--=_".$part."--"; //$message = '<html><body>' . $html . '</body></html>'; //$message = html2plain($html); logger('notifier: email delivery to ' . $addr); mail($addr, $subject, $body, $headers); } function discover_by_url($url,$arr = null) { require_once('library/HTML5/Parser.php'); $x = scrape_feed($url); if(! $x) { if(! $arr) return false; $network = (($arr['network']) ? $arr['network'] : 'unknown'); $name = (($arr['name']) ? $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 require_once('library/simplepie/simplepie.inc'); $feed = new SimplePie(); $level = 0; $x = z_fetch_url($guid,false,$level,array('novalidate' => true)); if(! $x['success']) { logger('probe_url: feed fetch failed for ' . $poll); return false; } $xml = $x['body']; logger('probe_url: fetch feed: ' . $guid . ' returns: ' . $xml, LOGGER_DATA); logger('probe_url: scrape_feed: headers: ' . $x['header'], LOGGER_DATA); // Don't try and parse an empty string $feed->set_raw_data(($xml) ? $xml : '<?xml version="1.0" encoding="utf-8" ?><xml></xml>'); $feed->init(); if($feed->error()) logger('probe_url: 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 = $elems['link'][0]['attribs']['']['href']; } } } } if($poll === $profile) $lnk = $feed->get_permalink(); if(isset($lnk) && strlen($lnk)) $profile = $lnk; if(! $network) { $network = 'rss'; } if(! $name) $name = notags($feed->get_description()); if(! $guid) return false; $r = q("select * from xchan where xchan_hash = '%s' limit 1", dbesc($guid) ); if($r) return true; if(! $photo) $photo = z_root() . '/images/rss_icon.png'; $r = q("insert into xchan ( xchan_hash, xchan_guid, xchan_pubkey, xchan_addr, xchan_url, xchan_name, xchan_network, xchan_instance_url, xchan_name_date ) values ('%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s') ", dbesc($guid), dbesc($guid), dbesc($pubkey), dbesc($addr), dbesc($profile), dbesc($name), dbesc($network), dbesc(z_root()), dbesc(datetime_convert()) ); $photos = import_profile_photo($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; } function discover_by_webbie($webbie) { require_once('library/HTML5/Parser.php'); $webbie = strtolower($webbie); $x = webfinger_rfc7033($webbie); if($x && array_key_exists('links',$x) && $x['links']) { foreach($x['links'] as $link) { if(array_key_exists('rel',$link) && $link['rel'] == 'http://purl.org/zot/protocol') { logger('discover_by_webbie: zot found for ' . $webbie, LOGGER_DEBUG); $z = z_fetch_url($link['href']); if($z['success']) { $j = json_decode($z['body'],true); $i = import_xchan($j); return true; } } } } $result = array(); $network = null; $diaspora = false; $diaspora_base = ''; $diaspora_guid = ''; $diaspora_key = ''; $dfrn = false; $x = old_webfinger($webbie); if($x) { logger('old_webfinger: ' . print_r($x,true)); foreach($x as $link) { if($link['@attributes']['rel'] === NAMESPACE_DFRN) $dfrn = unamp($link['@attributes']['href']); if($link['@attributes']['rel'] === 'salmon') $notify = unamp($link['@attributes']['href']); if($link['@attributes']['rel'] === NAMESPACE_FEED) $poll = unamp($link['@attributes']['href']); if($link['@attributes']['rel'] === 'http://microformats.org/profile/hcard') $hcard = unamp($link['@attributes']['href']); if($link['@attributes']['rel'] === 'http://webfinger.net/rel/profile-page') $profile = unamp($link['@attributes']['href']); if($link['@attributes']['rel'] === 'http://portablecontacts.net/spec/1.0') $poco = unamp($link['@attributes']['href']); if($link['@attributes']['rel'] === 'http://joindiaspora.com/seed_location') { $diaspora_base = unamp($link['@attributes']['href']); $diaspora = true; } if($link['@attributes']['rel'] === 'http://joindiaspora.com/guid') { $diaspora_guid = unamp($link['@attributes']['href']); $diaspora = true; } if($link['@attributes']['rel'] === 'diaspora-public-key') { $diaspora_key = base64_decode(unamp($link['@attributes']['href'])); if(strstr($diaspora_key,'RSA ')) $pubkey = rsatopem($diaspora_key); else $pubkey = $diaspora_key; $diaspora = true; } } if($diaspora && $diaspora_base && $diaspora_guid) { $guid = $diaspora_guid; $diaspora_base = trim($diaspora_base,'/'); $notify = $diaspora_base . '/receive'; if(strpos($webbie,'@')) { $addr = str_replace('acct:', '', $webbie); $hostname = substr($webbie,strpos($webbie,'@')+1); } $network = 'diaspora'; // until we get a dfrn layer, we'll use diaspora protocols for Friendica, // but give it a different network so we can go back and fix these when we get proper support. // It really should be just 'friendica' but we also want to distinguish // between Friendica sites that we can use D* protocols with and those we can't. // Some Friendica sites will have Diaspora disabled. if($dfrn) $network = 'friendica-over-diaspora'; if($hcard) { $vcard = scrape_vcard($hcard); $vcard['nick'] = substr($webbie,0,strpos($webbie,'@')); } $r = q("select * from xchan where xchan_hash = '%s' limit 1", dbesc($webbie) ); if(! $r) { $r = q("insert into xchan ( xchan_hash, xchan_guid, xchan_pubkey, xchan_addr, xchan_url, xchan_name, xchan_network, xchan_instance_url, xchan_name_date ) values ('%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s') ", dbesc($addr), dbesc($guid), dbesc($pubkey), dbesc($addr), dbesc($profile), dbesc($vcard['fn']), dbesc($network), dbesc(z_root()), dbescdate(datetime_convert()) ); } $r = q("select * from hubloc where hubloc_hash = '%s' limit 1", dbesc($webbie) ); if(! $r) { $r = q("insert into hubloc ( hubloc_guid, hubloc_hash, hubloc_addr, hubloc_network, hubloc_url, hubloc_host, hubloc_callback, hubloc_updated, hubloc_flags ) values ('%s','%s','%s','%s','%s','%s','%s','%s', %d)", dbesc($guid), dbesc($addr), dbesc($addr), dbesc($network), dbesc(trim($diaspora_base,'/')), dbesc($hostname), dbesc($notify), dbescdate(datetime_convert()), intval(HUBLOC_FLAGS_PRIMARY) ); } $photos = import_profile_photo($vcard['photo'],$addr); $r = q("update xchan set xchan_photo_date = '%s', xchan_photo_l = '%s', xchan_photo_m = '%s', xchan_photo_s = '%s', xchan_photo_mimetype = '%s' where xchan_hash = '%s'", dbescdate(datetime_convert('UTC','UTC',$arr['photo_updated'])), dbesc($photos[0]), dbesc($photos[1]), dbesc($photos[2]), dbesc($photos[3]), dbesc($addr) ); return true; } return false; /* $vcard['fn'] = notags($vcard['fn']); $vcard['nick'] = str_replace(' ','',notags($vcard['nick'])); $result['name'] = $vcard['fn']; $result['nick'] = $vcard['nick']; $result['guid'] = $guid; $result['url'] = $profile; $result['hostname'] = $hostname; $result['addr'] = $addr; $result['batch'] = $batch; $result['notify'] = $notify; $result['poll'] = $poll; $result['request'] = $request; $result['confirm'] = $confirm; $result['poco'] = $poco; $result['photo'] = $vcard['photo']; $result['priority'] = $priority; $result['network'] = $network; $result['alias'] = $alias; $result['pubkey'] = $pubkey; logger('probe_url: ' . print_r($result,true), LOGGER_DEBUG); return $result; */ /* Sample Diaspora result. Array ( [name] => Mike Macgirvin [nick] => macgirvin [guid] => a9174a618f8d269a [url] => https://joindiaspora.com/u/macgirvin [hostname] => joindiaspora.com [addr] => macgirvin@joindiaspora.com [batch] => [notify] => https://joindiaspora.com/receive [poll] => https://joindiaspora.com/public/macgirvin.atom [request] => [confirm] => [poco] => [photo] => https://joindiaspora.s3.amazonaws.com/uploads/images/thumb_large_fec4e6eef13ae5e56207.jpg [priority] => [network] => diaspora [alias] => [pubkey] => -----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAtihtyIuRDWkDpCA+I1UaQ jI4S7k625+A7EEJm+pL2ZVSJxeCKiFeEgHBQENjLMNNm8l8F6blxgQqE6ZJ9Spa7f tlaXYTRCrfxKzh02L3hR7sNA+JS/nXJaUAIo+IwpIEspmcIRbD9GB7Wv/rr+M28uH 31EeYyDz8QL6InU/bJmnCdFvmEMBQxJOw1ih9tQp7UNJAbUMCje0WYFzBz7sfcaHL OyYcCOqOCBLdGucUoJzTQ9iDBVzB8j1r1JkIHoEb2moUoKUp+tkCylNfd/3IVELF9 7w1Qjmit3m50OrJk2DQOXvCW9KQxaQNdpRPSwhvemIt98zXSeyZ1q/YjjOwG0DWDq AF8aLj3/oQaZndTPy/6tMiZogKaijoxj8xFLuPYDTw5VpKquriVC0z8oxyRbv4t9v 8JZZ9BXqzmayvY3xZGGp8NulrfjW+me2bKh0/df1aHaBwpZdDTXQ6kqAiS2FfsuPN vg57fhfHbL1yJ4oDbNNNeI0kJTGchXqerr8C20khU/cQ2Xt31VyEZtnTB665Ceugv kp3t2qd8UpAVKl430S5Quqx2ymfUIdxdW08CEjnoRNEL3aOWOXfbf4gSVaXmPCR4i LSIeXnd14lQYK/uxW/8cTFjcmddsKxeXysoQxbSa9VdDK+KkpZdgYXYrTTofXs6v+ 4afAEhRaaY+MCAwEAAQ== -----END PUBLIC KEY----- ) */ } } function webfinger_rfc7033($webbie) { if(! strpos($webbie,'@')) return false; $lhs = substr($webbie,0,strpos($webbie,'@')); $rhs = substr($webbie,strpos($webbie,'@')+1); $resource = 'acct:' . $webbie; $s = z_fetch_url('https://' . $rhs . '/.well-known/webfinger?resource=' . $resource); if($s['success']) $j = json_decode($s['body'],true); else return false; return($j); } function old_webfinger($webbie) { $host = ''; if(strstr($webbie,'@')) $host = substr($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('fetch_xrd_links: ' . $url); $redirects = 0; $x = z_fetch_url($url,false,$redirects,array('timeout' => 20)); if(! $x['success']) return array(); $xml = $x['body']; logger('fetch_xrd_links: ' . $xml, LOGGER_DATA); if ((! $xml) || (! stristr($xml,'<xrd'))) return array(); // fix diaspora's bad xml $xml = str_replace(array('href="','"/>'),array('href="','"/>'),$xml); $h = parse_xml_string($xml); if(! $h) return array(); $arr = convert_xml_element_to_array($h); $links = array(); if(isset($arr['xrd']['link'])) { $link = $arr['xrd']['link']; if(! isset($link[0])) $links = array($link); else $links = $link; } if(isset($arr['xrd']['alias'])) { $alias = $arr['xrd']['alias']; if(! isset($alias[0])) $aliases = array($alias); else $aliases = $alias; if(is_array($aliases) && count($aliases)) { foreach($aliases as $alias) { $links[]['@attributes'] = array('rel' => 'alias' , 'href' => $alias); } } } logger('fetch_xrd_links: ' . print_r($links,true), LOGGER_DATA); return $links; } function scrape_vcard($url) { $a = get_app(); $ret = array(); logger('scrape_vcard: url=' . $url); $x = z_fetch_url($url); if(! $x['success']) 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; } } try { $dom = HTML5_Parser::parse($s); } catch (DOMException $e) { logger('scrape_vcard: parse error: ' . $e); } if(! $dom) 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('class'),'fn')) $ret['fn'] = $x->textContent; if((attribute_contains($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 = $size; } } if((attribute_contains($x->getAttribute('class'),'nickname')) || (attribute_contains($x->getAttribute('class'),'uid'))) { $ret['nick'] = $x->textContent; } } } } return $ret; } function scrape_feed($url) { $a = get_app(); $ret = array(); $level = 0; $x = z_fetch_url($url,false,$level,array('novalidate' => true)); if(! $x['success']) return $ret; $headers = $x['header']; $code = $x['return_code']; $s = $x['body']; logger('scrape_feed: returns: ' . $code . ' headers=' . $headers, LOGGER_DEBUG); if(! $s) { logger('scrape_feed: 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,'<feed')) { $ret['feed_atom'] = $url; return $ret; } if(stristr($line,'application/rss+xml') || stristr($s,'<rss')) { $ret['feed_rss'] = $url; return $ret; } } } // perhaps an RSS version 1 feed with a generic or incorrect content-type? if(stristr($s,'</item>')) { $ret['feed_rss'] = $url; return $ret; } } try { $dom = HTML5_Parser::parse($s); } catch (DOMException $e) { logger('scrape_feed: parse error: ' . $e); } if(! $dom) { logger('scrape_feed: failed to parse.'); 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 $ret; } function service_plink($contact, $guid) { $plink = ''; $m = parse_url($contact['xchan_url']); if($m) { $url = $m['scheme'] . '://' . $m['host'] . (($m['port']) ? ':' . $m['port'] : ''); } else $url = 'https://' . substr($contact['xchan_addr'],strpos($contact['xchan_addr'],'@')+1); $handle = substr($contact['xchan_addr'], 0, strpos($contact['xchan_addr'],'@')); if($contact['xchan_network'] === 'diaspora') $plink = $url . '/posts/' . $guid; if($contact['xchan_network'] === 'friendica-over-diaspora') $plink = $url . '/display/' . $handle . '/' . $guid; if($contact['xchan_network'] === 'zot') $plink = $url . '/channel/' . $handle . '?f=&mid=' . $guid; return $plink; }