cuqmbr/rss-bridge
1
0
Fork 0
mirror of https://github.com/RSS-Bridge/rss-bridge.git synced 2025-04-23 23:16:53 +00:00
Code Issues Packages Projects Releases Wiki Activity

Ask hardworking workers from anti-captcha.com to solve Facebook captcha for us

Browse Source
This commit is contained in:
Timothy Guan-tin Chien 2017-02-26 12:37:15 +08:00
parent 8f3c56b184
commit 0824202606
1 changed files with 91 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

102
bridges/FacebookBridge.php
View File

@ -12,6 +12,10 @@ class FacebookBridge extends BridgeAbstract {
'u' => array(
'name' => 'Username',
'required' => true
),
'anti_captcha_key' => array(
'name' => 'API key of anti-captcha.com',
'required' => false
)
));
@ -124,20 +128,95 @@ class FacebookBridge extends BridgeAbstract {
$captcha = $html->find('div.captcha_interstitial', 0);
if (!is_null($captcha))
{
//Save form for submitting after getting captcha response
if (session_status() == PHP_SESSION_NONE)
session_start();
$captcha_fields = array();
foreach ($captcha->find('input, button') as $input)
$captcha_fields[$input->name] = $input->value;
$_SESSION['captcha_fields'] = $captcha_fields;
$_SESSION['captcha_action'] = $captcha->find('form', 0)->action;
//Show captcha filling form to the viewer, proxying the captcha image
$captcha_action = $captcha->find('form', 0)->action;
$img = base64_encode(getContents($captcha->find('img', 0)->src));
header('HTTP/1.1 500 ' . Http::getMessageForCode(500));
header('Content-Type: text/html');
$message = <<<EOD
if ($this->getInput('anti_captcha_key')) {
// Send the image to anti-captcha worker so they can solve it for us
$post_content = http_build_query(array(
'key' => $this->getInput('anti_captcha_key'),
'body' => $img,
));
$http_options = array(
'http' => array(
'method' => 'POST',
'user_agent' => ini_get('user_agent'),
'header' => array(
'Content-Type: application/x-www-form-urlencoded',
'Content-Length: ' . strlen($post_content)),
'content' => $post_content,
),
);
$context = stream_context_create($http_options);
$res = getContents('https://anti-captcha.com/in.php', false, $context);
if ($res === false) {
returnServerError('Failed to submit captcha to anti-captcha.com');
}
if (substr($res, 0, 2) !== 'OK') {
returnServerError('anti-captcha.com in.php Error: ' . $res);
}
$captcha_id = substr($res, 3);
// Make sure we forward the captcha response
set_time_limit(330);
ignore_user_abort();
$i = 310;
$html = null;
while ($i--) {
sleep(1);
$res = getContents(
'https://anti-captcha.com/res.php?key=' . $this->getInput('anti_captcha_key') .
'&action=get&id=' . $captcha_id, false);
// CAPCHA_NOT_READY matches typo from the API response. Don't fix it.
if ($res === false || $res === 'CAPCHA_NOT_READY') {
continue;
}
if (substr($res, 0, 5) === 'ERROR') {
returnServerError('anti-captcha.com res.php Error: ' . $res);
}
if (substr($res, 0, 2) === 'OK') {
// Handle captcha response
$captcha_fields['captcha_response'] = preg_replace("/[^a-zA-Z0-9]+/", "", substr($res, 3));
$http_options = array(
'http' => array(
'method' => 'POST',
'user_agent' => ini_get('user_agent'),
'header' => array("Content-type:
application/x-www-form-urlencoded\r\nReferer: $captcha_action\r\nCookie: noscript=1\r\n"),
'content' => http_build_query($captcha_fields),
),
);
$context = stream_context_create($http_options);
$html = getContents($captcha_action, false, $context);
if ($html === false) {
returnServerError('Failed to submit captcha response back to Facebook.');
}
$html = str_get_html($html);
$captcha = $html->find('div.captcha_interstitial', 0);
if (!is_null($captcha)) {
returnServerError('Captcha response failed to remove captcha.');
}
break;
}
}
if (is_null($html)) {
returnServerError('Failed to get a captcha response in time.');
}
} else {
//Save form for submitting after getting captcha response
if (session_status() == PHP_SESSION_NONE)
session_start();
$_SESSION['captcha_fields'] = $captcha_fields;
$_SESSION['captcha_action'] = $captcha_action;
//Show captcha filling form to the viewer, proxying the captcha image
header('HTTP/1.1 500 ' . Http::getMessageForCode(500));
header('Content-Type: text/html');
$message = <<<EOD
<form method="post" action="?{$_SERVER['QUERY_STRING']}">
<h2>Facebook captcha challenge</h2>
<p>Unfortunately, rss-bridge cannot fetch the requested page.<br />
@ -147,7 +226,8 @@ class FacebookBridge extends BridgeAbstract {
<input type="submit" value="Submit!" /></p>
</form>
EOD;
die($message);
die($message);
}
}
//No captcha? We can carry on retrieving page contents :)