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Merge pull request #2486 from rabuzarus/2704_xml

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move xml related function to the xml class + some doxygen docu
This commit is contained in:
Michael Vogel 2016-04-28 06:27:49 +02:00
parent d3cf0bf994 9b3931e48a
commit 87af398ee0
2 changed files with 360 additions and 308 deletions
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442
include/network.php
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@ -1,12 +1,29 @@
<?php <?php
/**
* @file include/network.php
*/
// curl wrapper. If binary flag is true, return binary require_once("include/xml.php");
// results.
// Set the cookiejar argument to a string (e.g. "/tmp/friendica-cookies.txt")
// to preserve cookies from one request to the next. /**
if(! function_exists('fetch_url')) { * @brief Curl wrapper
*
* If binary flag is true, return binary results.
* Set the cookiejar argument to a string (e.g. "/tmp/friendica-cookies.txt")
* to preserve cookies from one request to the next.
*
* @param string $url URL to fetch
* @param boolean $binary default false
* TRUE if asked to return binary results (file download)
* @param integer $redirects The recursion counter for internal use - default 0
* @param integer $timeout Timeout in seconds, default system config value or 60 seconds
* @param string $accept_content supply Accept: header with 'accept_content' as the value
* @param string $cookiejar Path to cookie jar file
*
* @return string The fetched content
*/
function fetch_url($url,$binary = false, &$redirects = 0, $timeout = 0, $accept_content=Null, $cookiejar = 0) { function fetch_url($url,$binary = false, &$redirects = 0, $timeout = 0, $accept_content=Null, $cookiejar = 0) {
$ret = z_fetch_url( $ret = z_fetch_url(
@ -19,32 +36,29 @@ function fetch_url($url,$binary = false, &$redirects = 0, $timeout = 0, $accept_
)); ));
return($ret['body']); return($ret['body']);
}} }
if(!function_exists('z_fetch_url')){
/** /**
* @brief fetches an URL. * @brief fetches an URL.
* *
* @param string $url * @param string $url URL to fetch
* URL to fetch
* @param boolean $binary default false * @param boolean $binary default false
* TRUE if asked to return binary results (file download) * TRUE if asked to return binary results (file download)
* @param int $redirects default 0 * @param int $redirects The recursion counter for internal use - default 0
* internal use, recursion counter
* @param array $opts (optional parameters) assoziative array with: * @param array $opts (optional parameters) assoziative array with:
* * \b accept_content => supply Accept: header with 'accept_content' as the value * 'accept_content' => supply Accept: header with 'accept_content' as the value
* * \b timeout => int seconds, default system config value or 60 seconds * 'timeout' => int Timeout in seconds, default system config value or 60 seconds
* * \b http_auth => username:password * 'http_auth' => username:password
* * \b novalidate => do not validate SSL certs, default is to validate using our CA list * 'novalidate' => do not validate SSL certs, default is to validate using our CA list
* * \b nobody => only return the header * 'nobody' => only return the header
* * \b cookiejar => path to cookie jar file * 'cookiejar' => path to cookie jar file
* *
* @return array an assoziative array with: * @return array an assoziative array with:
* * \e int \b return_code => HTTP return code or 0 if timeout or failure * int 'return_code' => HTTP return code or 0 if timeout or failure
* * \e boolean \b success => boolean true (if HTTP 2xx result) or false * boolean 'success' => boolean true (if HTTP 2xx result) or false
* * \e string \b redirect_url => in case of redirect, content was finally retrieved from this URL * string 'redirect_url' => in case of redirect, content was finally retrieved from this URL
* * \e string \b header => HTTP headers * string 'header' => HTTP headers
* * \e string \b body => fetched content * string 'body' => fetched content
*/ */
function z_fetch_url($url,$binary = false, &$redirects = 0, $opts=array()) { function z_fetch_url($url,$binary = false, &$redirects = 0, $opts=array()) {
@ -93,6 +107,7 @@ function z_fetch_url($url,$binary = false, &$redirects = 0, $opts=array()) {
$curl_time = intval(get_config('system','curl_timeout')); $curl_time = intval(get_config('system','curl_timeout'));
@curl_setopt($ch, CURLOPT_TIMEOUT, (($curl_time !== false) ? $curl_time : 60)); @curl_setopt($ch, CURLOPT_TIMEOUT, (($curl_time !== false) ? $curl_time : 60));
} }
// by default we will allow self-signed certs // by default we will allow self-signed certs
// but you can override this // but you can override this
@ -192,11 +207,21 @@ function z_fetch_url($url,$binary = false, &$redirects = 0, $opts=array()) {
return($ret); return($ret);
}} }
// post request to $url. $params is an array of post variables. // post request to $url. $params is an array of post variables.
if(! function_exists('post_url')) { /**
* @brief Post request to $url
*
* @param string $url URL to post
* @param mixed $params
* @param string $headers HTTP headers
* @param integer $redirects Recursion counter for internal use - default = 0
* @param integer $timeout The timeout in seconds, default system config value or 60 seconds
*
* @return string The content
*/
function post_url($url,$params, $headers = null, &$redirects = 0, $timeout = 0) { function post_url($url,$params, $headers = null, &$redirects = 0, $timeout = 0) {
$stamp1 = microtime(true); $stamp1 = microtime(true);
@ -294,13 +319,12 @@ function post_url($url,$params, $headers = null, &$redirects = 0, $timeout = 0)
logger("post_url: end ".$url, LOGGER_DATA); logger("post_url: end ".$url, LOGGER_DATA);
return($body); return($body);
}} }
// Generic XML return // Generic XML return
// Outputs a basic dfrn XML status structure to STDOUT, with a <status> variable // 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. // of $st and an optional text <message> of $message and terminates the current process.
if(! function_exists('xml_status')) {
function xml_status($st, $message = '') { function xml_status($st, $message = '') {
$xml_message = ((strlen($message)) ? "\t<message>" . xmlify($message) . "</message>\r\n" : ''); $xml_message = ((strlen($message)) ? "\t<message>" . xmlify($message) . "</message>\r\n" : '');
@ -312,10 +336,18 @@ function xml_status($st, $message = '') {
echo '<?xml version="1.0" encoding="UTF-8"?>'."\r\n"; echo '<?xml version="1.0" encoding="UTF-8"?>'."\r\n";
echo "<result>\r\n\t<status>$st</status>\r\n$xml_message</result>\r\n"; echo "<result>\r\n\t<status>$st</status>\r\n$xml_message</result>\r\n";
killme(); killme();
}} }
if(! function_exists('http_status_exit')) { /**
* @brief Send HTTP status header and exit.
*
* @param integer $val HTTP status result value
* @param array $description optional message
* 'title' => header title
* 'description' => optional message
*/
function http_status_exit($val, $description = array()) { function http_status_exit($val, $description = array()) {
$err = ''; $err = '';
if($val >= 400) { if($val >= 400) {
@ -337,59 +369,13 @@ function http_status_exit($val, $description = array()) {
killme(); killme();
}} }
// convert an XML document to a normalised, case-corrected array
// used by webfinger
if(! function_exists('convert_xml_element_to_array')) {
function convert_xml_element_to_array($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)));
}
}}
// Given an email style address, perform webfinger lookup and // Given an email style address, perform webfinger lookup and
// return the resulting DFRN profile URL, or if no DFRN profile URL // return the resulting DFRN profile URL, or if no DFRN profile URL
// is located, returns an OStatus subscription template (prefixed // is located, returns an OStatus subscription template (prefixed
// with the string 'stat:' to identify it as on OStatus template). // with the string 'stat:' to identify it as on OStatus template).
// If this isn't an email style address just return $s. // If this isn't an email style address just return $webbie.
// Return an empty string if email-style addresses but webfinger fails, // Return an empty string if email-style addresses but webfinger fails,
// or if the resultant personal XRD doesn't contain a supported // or if the resultant personal XRD doesn't contain a supported
// subscription/friend-request attribute. // subscription/friend-request attribute.
@ -397,15 +383,14 @@ function convert_xml_element_to_array($xml_element, &$recursion_depth=0) {
// amended 7/9/2011 to return an hcard which could save potentially loading // amended 7/9/2011 to return an hcard which could save potentially loading
// a lengthy content page to scrape dfrn attributes // a lengthy content page to scrape dfrn attributes
if(! function_exists('webfinger_dfrn')) { function webfinger_dfrn($webbie,&$hcard) {
function webfinger_dfrn($s,&$hcard) { if(! strstr($webbie,'@')) {
if(! strstr($s,'@')) { return $webbie;
return $s;
} }
$profile_link = ''; $profile_link = '';
$links = webfinger($s); $links = webfinger($webbie);
logger('webfinger_dfrn: ' . $s . ':' . print_r($links,true), LOGGER_DATA); logger('webfinger_dfrn: ' . $webbie . ':' . print_r($links,true), LOGGER_DATA);
if(count($links)) { if(count($links)) {
foreach($links as $link) { foreach($links as $link) {
if($link['@attributes']['rel'] === NAMESPACE_DFRN) if($link['@attributes']['rel'] === NAMESPACE_DFRN)
@ -417,29 +402,32 @@ function webfinger_dfrn($s,&$hcard) {
} }
} }
return $profile_link; return $profile_link;
}} }
// Given an email style address, perform webfinger lookup and /**
// return the array of link attributes from the personal XRD file. * @brief Perform webfinger lookup on an email style address
// On error/failure return an empty array. *
* @param string $webbi An email style address
* @param boolean $debug
if(! function_exists('webfinger')) { *
function webfinger($s, $debug = false) { * @return array of link attributes from the personal XRD file
* empty array on error/failure
*/
function webfinger($webbie, $debug = false) {
$host = ''; $host = '';
if(strstr($s,'@')) { if(strstr($webbie,'@')) {
$host = substr($s,strpos($s,'@') + 1); $host = substr($webbie,strpos($webbie,'@') + 1);
} }
if(strlen($host)) { if(strlen($host)) {
$tpl = fetch_lrdd_template($host); $tpl = fetch_lrdd_template($host);
logger('webfinger: lrdd template: ' . $tpl); logger('webfinger: lrdd template: ' . $tpl);
if(strlen($tpl)) { if(strlen($tpl)) {
$pxrd = str_replace('{uri}', urlencode('acct:' . $s), $tpl); $pxrd = str_replace('{uri}', urlencode('acct:' . $webbie), $tpl);
logger('webfinger: pxrd: ' . $pxrd); logger('webfinger: pxrd: ' . $pxrd);
$links = fetch_xrd_links($pxrd); $links = fetch_xrd_links($pxrd);
if(! count($links)) { if(! count($links)) {
// try with double slashes // try with double slashes
$pxrd = str_replace('{uri}', urlencode('acct://' . $s), $tpl); $pxrd = str_replace('{uri}', urlencode('acct://' . $webbie), $tpl);
logger('webfinger: pxrd: ' . $pxrd); logger('webfinger: pxrd: ' . $pxrd);
$links = fetch_xrd_links($pxrd); $links = fetch_xrd_links($pxrd);
} }
@ -447,9 +435,8 @@ function webfinger($s, $debug = false) {
} }
} }
return array(); return array();
}} }
if(! function_exists('lrdd')) {
function lrdd($uri, $debug = false) { function lrdd($uri, $debug = false) {
$a = get_app(); $a = get_app();
@ -494,7 +481,7 @@ function lrdd($uri, $debug = false) {
if(! $h) if(! $h)
return array(); return array();
$arr = convert_xml_element_to_array($h); $arr = xml::element_to_array($h);
if(isset($arr['xrd']['property'])) { if(isset($arr['xrd']['property'])) {
$property = $arr['crd']['property']; $property = $arr['crd']['property'];
@ -618,15 +605,12 @@ function lrdd($uri, $debug = false) {
return array(); return array();
}} }
// Given a host name, locate the LRDD template from that // Given a host name, locate the LRDD template from that
// host. Returns the LRDD template or an empty string on // host. Returns the LRDD template or an empty string on
// error/failure. // error/failure.
if(! function_exists('fetch_lrdd_template')) {
function fetch_lrdd_template($host) { function fetch_lrdd_template($host) {
$tpl = ''; $tpl = '';
@ -648,13 +632,15 @@ function fetch_lrdd_template($host) {
if(! strpos($tpl,'{uri}')) if(! strpos($tpl,'{uri}'))
$tpl = ''; $tpl = '';
return $tpl; return $tpl;
}} }
// Given a URL, retrieve the page as an XRD document. /**
// Return an array of links. * @brief Given a URL, retrieve the page as an XRD document.
// on error/failure return empty array. *
* @param string $url An url
if(! function_exists('fetch_xrd_links')) { * @return array of links
* return empty array on error/failure
*/
function fetch_xrd_links($url) { function fetch_xrd_links($url) {
$xrd_timeout = intval(get_config('system','xrd_timeout')); $xrd_timeout = intval(get_config('system','xrd_timeout'));
@ -673,7 +659,7 @@ function fetch_xrd_links($url) {
if(! $h) if(! $h)
return array(); return array();
$arr = convert_xml_element_to_array($h); $arr = xml::element_to_array($h);
$links = array(); $links = array();
@ -701,14 +687,17 @@ function fetch_xrd_links($url) {
return $links; return $links;
}} }
/**
// Take a URL from the wild, prepend http:// if necessary * @brief Check URL to se if ts's real
// 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 * 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)
if(! function_exists('validate_url')) { *
* @param string $url The URL to be validated
* @return boolean True if it's a valid URL, fals if something wrong with it
*/
function validate_url(&$url) { function validate_url(&$url) {
if(get_config('system','disable_url_validation')) if(get_config('system','disable_url_validation'))
@ -724,11 +713,14 @@ function validate_url(&$url) {
return true; return true;
} }
return false; return false;
}} }
// checks that email is an actual resolvable internet address /**
* @brief Checks that email is an actual resolvable internet address
if(! function_exists('validate_email')) { *
* @param string $addr The email address
* @return boolean True if it's a valid email address, false if it's not
*/
function validate_email($addr) { function validate_email($addr) {
if(get_config('system','disable_email_validation')) if(get_config('system','disable_email_validation'))
@ -742,14 +734,17 @@ function validate_email($addr) {
return true; return true;
} }
return false; return false;
}} }
// Check $url against our list of allowed sites, /**
// wildcards allowed. If allowed_sites is unset return true; * @brief Check if URL is allowed
// If url is allowed, return true. *
// otherwise, return false * Check $url against our list of allowed sites,
* wildcards allowed. If allowed_sites is unset return true;
if(! function_exists('allowed_url')) { *
* @param string $url URL which get tested
* @return boolean True if url is allowed otherwise return false
*/
function allowed_url($url) { function allowed_url($url) {
$h = @parse_url($url); $h = @parse_url($url);
@ -784,14 +779,17 @@ function allowed_url($url) {
} }
} }
return $found; return $found;
}} }
// check if email address is allowed to register here. /**
// Compare against our list (wildcards allowed). * @brief Check if email address is allowed to register here.
// Returns false if not allowed, true if allowed or if *
// allowed list is not configured. * Compare against our list (wildcards allowed).
*
if(! function_exists('allowed_email')) { * @param type $email
* @return boolean False if not allowed, true if allowed
* or if allowed list is not configured
*/
function allowed_email($email) { function allowed_email($email) {
@ -818,10 +816,8 @@ function allowed_email($email) {
} }
} }
return $found; return $found;
}} }
if(! function_exists('avatar_img')) {
function avatar_img($email) { function avatar_img($email) {
$a = get_app(); $a = get_app();
@ -838,11 +834,11 @@ function avatar_img($email) {
logger('Avatar: ' . $avatar['email'] . ' ' . $avatar['url'], LOGGER_DEBUG); logger('Avatar: ' . $avatar['email'] . ' ' . $avatar['url'], LOGGER_DEBUG);
return $avatar['url']; return $avatar['url'];
}} }
if(! function_exists('parse_xml_string')) {
function parse_xml_string($s,$strict = true) { function parse_xml_string($s,$strict = true) {
/// @todo Move this function to the xml class
if($strict) { if($strict) {
if(! strstr($s,'<?xml')) if(! strstr($s,'<?xml'))
return false; return false;
@ -860,7 +856,7 @@ function parse_xml_string($s,$strict = true) {
libxml_clear_errors(); libxml_clear_errors();
} }
return $x; return $x;
}} }
function scale_external_images($srctext, $include_link = true, $scale_replace = false) { function scale_external_images($srctext, $include_link = true, $scale_replace = false) {
@ -972,171 +968,6 @@ function fix_contact_ssl_policy(&$contact,$new_policy) {
} }
} }
/**
* 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 original_url($url, $depth=1, $fetchbody = false) { function original_url($url, $depth=1, $fetchbody = false) {
$a = get_app(); $a = get_app();
@ -1263,7 +1094,6 @@ function original_url($url, $depth=1, $fetchbody = false) {
return($url); return($url);
} }
if (!function_exists('short_link')) {
function short_link($url) { function short_link($url) {
require_once('library/slinky.php'); require_once('library/slinky.php');
$slinky = new Slinky($url); $slinky = new Slinky($url);
@ -1285,7 +1115,7 @@ function short_link($url) {
$slinky->set_cascade(array(new Slinky_UR1ca(), new Slinky_Trim(), new Slinky_IsGd(), new Slinky_TinyURL())); $slinky->set_cascade(array(new Slinky_UR1ca(), new Slinky_Trim(), new Slinky_IsGd(), new Slinky_TinyURL()));
} }
return $slinky->short(); return $slinky->short();
}}; }
/** /**
* @brief Encodes content to json * @brief Encodes content to json

222
include/xml.php
View file

@ -127,5 +127,227 @@ class xml {
$element = self::create_element($doc, $element, $value, $attributes); $element = self::create_element($doc, $element, $value, $attributes);
$parent->appendChild($element); $parent->appendChild($element);
} }
/**
* @brief Convert an XML document to a normalised, case-corrected array
* used by webfinger
*
* @param object $xml_element The XML document
* @param integer $recursion_depth recursion counter for internal use - default 0
* internal use, recursion counter
*
* @return array | sring The array from the xml element or the string
*/
public static function element_to_array($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)] =
self::convert_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)));
}
}
/**
* @brief Convert the given XML text to an array in the XML structure.
*
* xml::to_array() 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...)
*
* Examples: $array = xml::to_array(file_get_contents('feed.xml'));
* $array = xml::to_array(file_get_contents('feed.xml', true, 1, 'attribute'));
*
* @param object $contents The XML text
* @param boolean $namespaces True or false include namespace information
* in the returned array as array elements.
* @param integer $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 $priority Can be 'tag' or 'attribute'. This will change the way the resulting
* array sturcture. For 'tag', the tags are given more importance.
*
* @return array The parsed XML in an array form. Use print_r() to see the resulting array structure.
*/
public static function to_array($contents, $namespaces = true, $get_attributes=1, $priority = 'attribute') {
if(!$contents) return array();
if(!function_exists('xml_parser_create')) {
logger('xml::to_array: 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(! $parser) {
logger('xml::to_array: xml_parser_create: no resource');
return array();
}
xml_parser_set_option($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('xml::to_array: 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);
}
} }
?> ?>