Knah-Tsaeb/MyShaarli
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Fixes #531 - Title retrieving is failing with multiple use case

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see https://github.com/shaarli/Shaarli/issues/531 for details
This commit is contained in:
ArthurHoaro 2016-04-06 22:00:52 +02:00
parent 11609d9fd8
commit ce7b0b6480
6 changed files with 142 additions and 16 deletions
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60
application/HttpUtils.php
View file

@ -27,7 +27,9 @@
function get_http_response($url, $timeout = 30, $maxBytes = 4194304)
{
$urlObj = new Url($url);
if (! filter_var($url, FILTER_VALIDATE_URL) || ! $urlObj->isHttp()) {
$cleanUrl = $urlObj->indToAscii();
if (! filter_var($cleanUrl, FILTER_VALIDATE_URL) || ! $urlObj->isHttp()) {
return array(array(0 => 'Invalid HTTP Url'), false);
}
@ -35,22 +37,27 @@ function get_http_response($url, $timeout = 30, $maxBytes = 4194304)
'http' => array(
'method' => 'GET',
'timeout' => $timeout,
'user_agent' => 'Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:23.0)'
.' Gecko/20100101 Firefox/23.0',
'request_fulluri' => true,
'user_agent' => 'Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:45.0)'
.' Gecko/20100101 Firefox/45.0',
'accept_language' => substr(setlocale(LC_COLLATE, 0), 0, 2) . ',en-US;q=0.7,en;q=0.3',
)
);
$context = stream_context_create($options);
stream_context_set_default($options);
list($headers, $finalUrl) = get_redirected_headers($cleanUrl);
if (! $headers || strpos($headers[0], '200 OK') === false) {
$options['http']['request_fulluri'] = true;
stream_context_set_default($options);
list($headers, $finalUrl) = get_redirected_headers($cleanUrl);
}
list($headers, $finalUrl) = get_redirected_headers($urlObj->cleanup());
if (! $headers || strpos($headers[0], '200 OK') === false) {
return array($headers, false);
}
try {
// TODO: catch Exception in calling code (thumbnailer)
$context = stream_context_create($options);
$content = file_get_contents($finalUrl, false, $context, -1, $maxBytes);
} catch (Exception $exc) {
return array(array(0 => 'HTTP Error'), $exc->getMessage());
@ -60,16 +67,19 @@ function get_http_response($url, $timeout = 30, $maxBytes = 4194304)
}
/**
* Retrieve HTTP headers, following n redirections (temporary and permanent).
* Retrieve HTTP headers, following n redirections (temporary and permanent ones).
*
* @param string $url initial URL to reach.
* @param int $redirectionLimit max redirection follow..
* @param string $url initial URL to reach.
* @param int $redirectionLimit max redirection follow..
*
* @return array
* @return array HTTP headers, or false if it failed.
*/
function get_redirected_headers($url, $redirectionLimit = 3)
{
$headers = get_headers($url, 1);
if (!empty($headers['location']) && empty($headers['Location'])) {
$headers['Location'] = $headers['location'];
}
// Headers found, redirection found, and limit not reached.
if ($redirectionLimit-- > 0
@ -79,6 +89,7 @@ function get_redirected_headers($url, $redirectionLimit = 3)
$redirection = is_array($headers['Location']) ? end($headers['Location']) : $headers['Location'];
if ($redirection != $url) {
$redirection = getAbsoluteUrl($url, $redirection);
return get_redirected_headers($redirection, $redirectionLimit);
}
}
@ -86,6 +97,35 @@ function get_redirected_headers($url, $redirectionLimit = 3)
return array($headers, $url);
}
/**
* Get an absolute URL from a complete one, and another absolute/relative URL.
*
* @param string $originalUrl The original complete URL.
* @param string $newUrl The new one, absolute or relative.
*
* @return string Final URL:
* - $newUrl if it was already an absolute URL.
* - if it was relative, absolute URL from $originalUrl path.
*/
function getAbsoluteUrl($originalUrl, $newUrl)
{
$newScheme = parse_url($newUrl, PHP_URL_SCHEME);
// Already an absolute URL.
if (!empty($newScheme)) {
return $newUrl;
}
$parts = parse_url($originalUrl);
$final = $parts['scheme'] .'://'. $parts['host'];
$final .= (!empty($parts['port'])) ? $parts['port'] : '';
$final .= '/';
if ($newUrl[0] != '/') {
$final .= substr(ltrim($parts['path'], '/'), 0, strrpos($parts['path'], '/'));
}
$final .= ltrim($newUrl, '/');
return $final;
}
/**
* Returns the server's base URL: scheme://domain.tld[:port]
*

6
application/LinkUtils.php
View file

@ -9,8 +9,8 @@
*/
function html_extract_title($html)
{
if (preg_match('!<title>(.*?)</title>!is', $html, $matches)) {
return trim(str_replace("\n", ' ', $matches[1]));
if (preg_match('!<title.*?>(.*?)</title>!is', $html, $matches)) {
return trim(str_replace("\n", '', $matches[1]));
}
return false;
}
@ -70,7 +70,7 @@ function headers_extract_charset($headers)
function html_extract_charset($html)
{
// Get encoding specified in HTML header.
preg_match('#<meta .*charset="?([^">/]+)"? */?>#Usi', $html, $enc);
preg_match('#<meta .*charset=["\']?([^";\'>/]+)["\']? */?>#Usi', $html, $enc);
if (!empty($enc[1])) {
return strtolower($enc[1]);
}

42
application/Url.php
View file

@ -62,7 +62,21 @@ function add_trailing_slash($url)
{
return $url . (!endsWith($url, '/') ? '/' : '');
}
/**
* Converts an URL with an IDN host to a ASCII one.
*
* @param string $url Input URL.
*
* @return string converted URL.
*/
function url_with_idn_to_ascii($url)
{
$parts = parse_url($url);
$parts['host'] = idn_to_ascii($parts['host']);
$httpUrl = new \http\Url($parts);
return $httpUrl->toString();
}
/**
* URL representation and cleanup utilities
*
@ -220,6 +234,22 @@ public function cleanup()
return $this->toString();
}
/**
* Converts an URL with an International Domain Name host to a ASCII one.
* This requires PHP-intl. If it's not available, just returns this->cleanup().
*
* @return string converted cleaned up URL.
*/
public function indToAscii()
{
$out = $this->cleanup();
if (! function_exists('idn_to_ascii') || ! isset($this->parts['host'])) {
return $out;
}
$asciiHost = idn_to_ascii($this->parts['host']);
return str_replace($this->parts['host'], $asciiHost, $out);
}
/**
* Get URL scheme.
*
@ -232,6 +262,18 @@ public function getScheme() {
return $this->parts['scheme'];
}
/**
* Get URL host.
*
* @return string the URL host or false if none is provided.
*/
public function getHost() {
if (empty($this->parts['host'])) {
return false;
}
return $this->parts['host'];
}
/**
* Test if the Url is an HTTP one.
*

8
index.php
View file

@ -1516,7 +1516,7 @@ function renderPage()
// -------- User want to post a new link: Display link edit form.
if (isset($_GET['post'])) {
$url = cleanup_url(escape($_GET['post']));
$url = cleanup_url($_GET['post']);
$link_is_new = false;
// Check if URL is not already in database (in this case, we will edit the existing link)
@ -1541,8 +1541,8 @@ function renderPage()
// Extract title.
$title = html_extract_title($content);
// Re-encode title in utf-8 if necessary.
if (! empty($title) && $charset != 'utf-8') {
$title = mb_convert_encoding($title, $charset, 'utf-8');
if (! empty($title) && strtolower($charset) != 'utf-8') {
$title = mb_convert_encoding($title, 'utf-8', $charset);
}
}
}
@ -1551,6 +1551,8 @@ function renderPage()
$url = '?' . smallHash($linkdate);
$title = 'Note: ';
}
$url = escape($url);
$title = escape($title);
$link = array(
'linkdate' => $linkdate,

27
tests/HttpUtils/GetHttpUrlTest.php
View file

@ -35,4 +35,31 @@ public function testGetInvalidRemoteUrl()
$this->assertFalse($headers);
$this->assertFalse($content);
}
/**
* Test getAbsoluteUrl with relative target URL.
*/
public function testGetAbsoluteUrlWithRelative()
{
$origin = 'http://non.existent/blabla/?test';
$target = '/stuff.php';
$expected = 'http://non.existent/stuff.php';
$this->assertEquals($expected, getAbsoluteUrl($origin, $target));
$target = 'stuff.php';
$expected = 'http://non.existent/blabla/stuff.php';
$this->assertEquals($expected, getAbsoluteUrl($origin, $target));
}
/**
* Test getAbsoluteUrl with absolute target URL.
*/
public function testGetAbsoluteUrlWithAbsolute()
{
$origin = 'http://non.existent/blabla/?test';
$target = 'http://other.url/stuff.php';
$this->assertEquals($target, getAbsoluteUrl($origin, $target));
}
}

15
tests/Url/UrlTest.php
View file

@ -181,4 +181,19 @@ function testUrlIsNotHttp()
$url = new Url('ftp://save.tld/mysave');
$this->assertFalse($url->isHttp());
}
/**
* Test IndToAscii.
*/
function testIndToAscii()
{
$ind = 'http://www.académie-française.fr/';
$expected = 'http://www.xn--acadmie-franaise-npb1a.fr/';
$url = new Url($ind);
$this->assertEquals($expected, $url->indToAscii());
$notInd = 'http://www.academie-francaise.fr/';
$url = new Url($notInd);
$this->assertEquals($notInd, $url->indToAscii());
}
}