Auth_Yadis_ParanoidHTTPFetcher Class Reference

Inheritance diagram for Auth_Yadis_ParanoidHTTPFetcher:

Collaboration diagram for Auth_Yadis_ParanoidHTTPFetcher:

Public Member Functions
	Auth_Yadis_ParanoidHTTPFetcher ()
	reset ()
	_writeHeader ($ch, $header)
	private
	_writeData ($ch, $data)
	private
	supportsSSL ()
	Does this fetcher support SSL URLs?
	get ($url, $extra_headers=null)
	Fetches the specified URL using optional extra headers and returns the server's response.
	post ($url, $body, $extra_headers=null)
Public Member Functions inherited from Auth_Yadis_HTTPFetcher
	canFetchURL ($url)
	Return whether a URL can be fetched.
	allowedURL ($url)
	Return whether a URL should be allowed.
	isHTTPS ($url)
	Is this an https URL?
	URLHasAllowedScheme ($url)
	Is this an http or https URL?
	_findRedirect ($headers, $url)
	private

Additional Inherited Members
Data Fields inherited from Auth_Yadis_HTTPFetcher
	$timeout = 20

Detailed Description

Definition at line 29 of file ParanoidHTTPFetcher.php.

Member Function Documentation

Auth_Yadis_ParanoidHTTPFetcher::_writeData	(		$ch,
			$data
	)

private

Definition at line 53 of file ParanoidHTTPFetcher.php.

References $data, and Auth_OpenID_FETCHER_MAX_RESPONSE_KB.

    {
        if (strlen($this->data) > 1024*Auth_OpenID_FETCHER_MAX_RESPONSE_KB) {
            return 0;
        } else {
            $this->data .= $data;
            return strlen($data);
        }
    }

Auth_Yadis_ParanoidHTTPFetcher::_writeHeader	(		$ch,
			$header
	)

private

Definition at line 44 of file ParanoidHTTPFetcher.php.

    {
        array_push($this->headers, rtrim($header));
        return strlen($header);
    }

Auth_Yadis_ParanoidHTTPFetcher::Auth_Yadis_ParanoidHTTPFetcher

(

)

Definition at line 30 of file ParanoidHTTPFetcher.php.

References reset().

    {
        $this->reset();
    }

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Auth_Yadis_ParanoidHTTPFetcher::get	(		$url,
			$headers = null
	)

Fetches the specified URL using optional extra headers and returns the server's response.

Parameters

string	$url	The URL to be fetched.
array	$extra_headers	An array of header strings (e.g. "Accept: text/html").

Returns

mixed $result An array of ($code, $url, $headers, $body) if the URL could be fetched; null if the URL does not pass the URLHasAllowedScheme check or if the server's response is malformed.

Reimplemented from Auth_Yadis_HTTPFetcher.

Definition at line 78 of file ParanoidHTTPFetcher.php.

References $data, Auth_Yadis_HTTPFetcher\$timeout, Auth_Yadis_HTTPFetcher\_findRedirect(), Auth_Yadis_HTTPFetcher\allowedURL(), Auth_OpenID_USER_AGENT, Auth_Yadis_HTTPFetcher\canFetchURL(), Auth_Yadis_HTTPFetcher\isHTTPS(), Auth_OpenID\log(), and reset().

    {
        if (!$this->canFetchURL($url)) {
            return null;
        }

        $stop = time() + $this->timeout;
        $off = $this->timeout;

        $redir = true;

        while ($redir && ($off > 0)) {
            $this->reset();

            $c = curl_init();

            if ($c === false) {
                Auth_OpenID::log(
                    "curl_init returned false; could not " .
                    "initialize for URL '%s'", $url);
                return null;
            }

            if (defined('CURLOPT_NOSIGNAL')) {
                curl_setopt($c, CURLOPT_NOSIGNAL, true);
            }

            if (!$this->allowedURL($url)) {
                Auth_OpenID::log("Fetching URL not allowed: %s",
                                 $url);
                return null;
            }

            curl_setopt($c, CURLOPT_WRITEFUNCTION,
                        array($this, "_writeData"));
            curl_setopt($c, CURLOPT_HEADERFUNCTION,
                        array($this, "_writeHeader"));

            if ($extra_headers) {
                curl_setopt($c, CURLOPT_HTTPHEADER, $extra_headers);
            }

            $cv = curl_version();
            if(is_array($cv)) {
              $curl_user_agent = 'curl/'.$cv['version'];
            } else {
              $curl_user_agent = $cv;
            }
            curl_setopt($c, CURLOPT_USERAGENT,
                        Auth_OpenID_USER_AGENT.' '.$curl_user_agent);
            curl_setopt($c, CURLOPT_TIMEOUT, $off);
            curl_setopt($c, CURLOPT_URL, $url);

            if (defined('Auth_OpenID_VERIFY_HOST')) {
                curl_setopt($c, CURLOPT_SSL_VERIFYPEER, true);
                curl_setopt($c, CURLOPT_SSL_VERIFYHOST, 2);
            }
            curl_exec($c);

            $code = curl_getinfo($c, CURLINFO_HTTP_CODE);
            $body = $this->data;
            $headers = $this->headers;

            if (!$code) {
                Auth_OpenID::log("Got no response code when fetching %s", $url);
                Auth_OpenID::log("CURL error (%s): %s",
                                 curl_errno($c), curl_error($c));
                return null;
            }

            if (in_array($code, array(301, 302, 303, 307))) {
                $url = $this->_findRedirect($headers, $url);
                $redir = true;
            } else {
                $redir = false;
                curl_close($c);

                if (defined('Auth_OpenID_VERIFY_HOST') &&
                    $this->isHTTPS($url)) {
                    Auth_OpenID::log('OpenID: Verified SSL host %s using '.
                                     'curl/get', $url);
                }
                $new_headers = array();

                foreach ($headers as $header) {
                    if (strpos($header, ': ')) {
                        list($name, $value) = explode(': ', $header, 2);
                        $new_headers[$name] = $value;
                    }
                }

                Auth_OpenID::log(
                    "Successfully fetched '%s': GET response code %s",
                    $url, $code);

                return new Auth_Yadis_HTTPResponse($url, $code,
                                                    $new_headers, $body);
            }

            $off = $stop - time();
        }

        return null;
    }

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Auth_Yadis_ParanoidHTTPFetcher::post	(		$url,
			$body,
			$extra_headers = null
	)

Definition at line 183 of file ParanoidHTTPFetcher.php.

References $data, Auth_Yadis_HTTPFetcher\canFetchURL(), Auth_Yadis_HTTPFetcher\isHTTPS(), Auth_OpenID\log(), and reset().

    {
        if (!$this->canFetchURL($url)) {
            return null;
        }

        $this->reset();

        $c = curl_init();

        if (defined('CURLOPT_NOSIGNAL')) {
            curl_setopt($c, CURLOPT_NOSIGNAL, true);
        }

        curl_setopt($c, CURLOPT_POST, true);
        curl_setopt($c, CURLOPT_POSTFIELDS, $body);
        curl_setopt($c, CURLOPT_TIMEOUT, $this->timeout);
        curl_setopt($c, CURLOPT_URL, $url);
        curl_setopt($c, CURLOPT_WRITEFUNCTION,
                    array($this, "_writeData"));

        if (defined('Auth_OpenID_VERIFY_HOST')) {
            curl_setopt($c, CURLOPT_SSL_VERIFYPEER, true);
            curl_setopt($c, CURLOPT_SSL_VERIFYHOST, 2);
        }

        curl_exec($c);

        $code = curl_getinfo($c, CURLINFO_HTTP_CODE);

        if (!$code) {
            Auth_OpenID::log("Got no response code when fetching %s", $url);
            Auth_OpenID::log("CURL error (%s): %s",
                             curl_errno($c), curl_error($c));
            return null;
        }

        if (defined('Auth_OpenID_VERIFY_HOST') && $this->isHTTPS($url)) {
            Auth_OpenID::log('OpenID: Verified SSL host %s using '.
                             'curl/post', $url);
        }
        $body = $this->data;

        curl_close($c);

        $new_headers = $extra_headers;

        foreach ($this->headers as $header) {
            if (strpos($header, ': ')) {
                list($name, $value) = explode(': ', $header, 2);
                $new_headers[$name] = $value;
            }

        }

        Auth_OpenID::log("Successfully fetched '%s': POST response code %s",
                         $url, $code);

        return new Auth_Yadis_HTTPResponse($url, $code,
                                           $new_headers, $body);
    }

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Auth_Yadis_ParanoidHTTPFetcher::reset

(

)

Definition at line 35 of file ParanoidHTTPFetcher.php.

Referenced by Auth_Yadis_ParanoidHTTPFetcher(), get(), and post().

    {
        $this->headers = array();
        $this->data = "";
    }

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Auth_Yadis_ParanoidHTTPFetcher::supportsSSL

(

)

Does this fetcher support SSL URLs?

Reimplemented from Auth_Yadis_HTTPFetcher.

Definition at line 66 of file ParanoidHTTPFetcher.php.

    {
        $v = curl_version();
        if(is_array($v)) {
            return in_array('https', $v['protocols']);
        } elseif (is_string($v)) {
            return preg_match('/OpenSSL/i', $v);
        } else {
            return 0;
        }
    }

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The documentation for this class was generated from the following file:

• Services/OpenId/lib/Auth/Yadis/ParanoidHTTPFetcher.php