[geeklog-cvs] Geeklog-1.x/system/classes/openid COPYING, NONE, 1.1 LICENSE, NONE, 1.1 association.php, NONE, 1.1 consumer.php, NONE, 1.1 httpclient.php, NONE, 1.1 interface.php, NONE, 1.1 oid_parse.php, NONE, 1.1 oid_util.php, NONE, 1.1 server.php, NONE, 1.1 trustroot.php, NONE, 1.1
Dirk Haun
dhaun at qs1489.pair.com
Sat May 26 15:32:01 EDT 2007
Update of /cvsroot/geeklog/Geeklog-1.x/system/classes/openid
In directory qs1489.pair.com:/tmp/cvs-serv1378/system/classes/openid
Added Files:
COPYING LICENSE association.php consumer.php httpclient.php
interface.php oid_parse.php oid_util.php server.php
trustroot.php
Log Message:
OpenID support, provided by Choplair
--- NEW FILE: trustroot.php ---
<?php
/*****
PHP OpenID - OpenID consumer and server library
Copyright (C) 2005 Open Source Consulting, SA. and Dan Libby
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
Reciprocal linking. The author humbly requests that if you should use
PHP-OpenID on your website to provide an OpenID enabled service that you
place a link to the author's website ( http://videntity.org ) somewhere
that your users can discover it. You are however under no obligation to
do so.
More info about PHP OpenID:
openid at videntity.org
http://videntity.org/openid/
More info about OpenID:
http://www.openid.net
*****/
define( '_oid_top_level_domains_list', <<< END
com|edu|gov|int|mil|net|org|biz|info|name|museum|coop|aero|ac|ad|ae|
af|ag|ai|al|am|an|ao|aq|ar|as|at|au|aw|az|ba|bb|bd|be|bf|bg|bh|bi|bj|
bm|bn|bo|br|bs|bt|bv|bw|by|bz|ca|cc|cd|cf|cg|ch|ci|ck|cl|cm|cn|co|cr|
cu|cv|cx|cy|cz|de|dj|dk|dm|do|dz|ec|ee|eg|eh|er|es|et|fi|fj|fk|fm|fo|
fr|ga|gd|ge|gf|gg|gh|gi|gl|gm|gn|gp|gq|gr|gs|gt|gu|gw|gy|hk|hm|hn|hr|
ht|hu|id|ie|il|im|in|io|iq|ir|is|it|je|jm|jo|jp|ke|kg|kh|ki|km|kn|kp|
kr|kw|ky|kz|la|lb|lc|li|lk|lr|ls|lt|lu|lv|ly|ma|mc|md|mg|mh|mk|ml|mm|
mn|mo|mp|mq|mr|ms|mt|mu|mv|mw|mx|my|mz|na|nc|ne|nf|ng|ni|nl|no|np|nr|
nu|nz|om|pa|pe|pf|pg|ph|pk|pl|pm|pn|pr|ps|pt|pw|py|qa|re|ro|ru|rw|sa|
sb|sc|sd|se|sg|sh|si|sj|sk|sl|sm|sn|so|sr|st|sv|sy|sz|tc|td|tf|tg|th|
tj|tk|tm|tn|to|tp|tr|tt|tv|tw|tz|ua|ug|uk|um|us|uy|uz|va|vc|ve|vg|vi|
vn|vu|wf|ws|ye|yt|yu|za|zm|zw|localhost
END
);
define( '_oid_protocol_list', 'http|https');
class TrustRoot {
// Represents a valid openid trust root. The parse classmethod
// accepts a trust root string, producing a TrustRoot object.
var $_protocols;
var $_top_level_domains;
function TrustRoot($unparsed, $proto, $wildcard, $host, $port, $path) {
$this->_top_level_domains = explode( '|', _oid_top_level_domains_list );
$this->_protocols = explode( '|', _oid_protocol_list );
$this->unparsed = $unparsed;
$this->proto = $proto;
$this->wildcard = $wildcard;
$this->host = $host;
$this->port = $port;
$this->path = $path;
$this->_is_sane = null;
}
function isSane() {
// Checks the sanity of this trust root.
// http://*.com/ for example is not sane. Returns a bool.
if( $this->_is_sane ) {
return $this->_is_sane;
}
if( $this->host == 'localhost') {
return true;
}
$host_parts = explode( '.', $this->host );
// extract sane "top-level-domain
//
// porting note: this is a very python-ish way of doing things.
$host = array();
$cnt = count( $host_parts );
if( strlen($host_parts[$cnt-1]) == 2) {
if( $cnt > 1 && strlen($host_parts[$cnt-1]) <= 3) {
$host = array_slice( $host_parts, 0, $cnt-2);
}
}
else if( strlen($host_parts[$cnt-1]) == 3) {
$host = array_slice( $host_parts, 0, $cnt-1);
}
$this->_is_sane = count($host) ? true : false;
return $this->_is_sane;
}
function validateURL($url) {
// Validates a URL against this trust root. Returns a bool
if( !$this->isSane()) {
return false;
}
// porting note: PHP's parse_url() is not intended for url validation.
$url_parts = parse_url($url);
if( !$url_parts || !count( $url_parts ) ) {
return false;
}
$proto = isset( $url_parts['scheme'] ) ? $url_parts['scheme'] : null;
$host = isset( $url_parts['host'] ) ? $url_parts['host'] : null;
$port = isset( $url_parts['port'] ) ? $url_parts['port'] : null;
$path = isset( $url_parts['path'] ) ? $url_parts['path'] : null;
if( $proto != $this->proto) {
return false;
}
if( $port != $this->port) {
return false;
}
$arr1 = explode( '?', $path, 1);
$arr2 = explode( '?', $this->path, 1);
if( !$this->startswith( $arr1[0], $arr2[0]) ) {
return false;
}
if( !$this->wildcard) {
return $host == $this->host;
}
else {
return $this->endsWith( $host, $this->host );
}
}
// static
function parse($trust_root, $check_sanity=false) {
if( !is_string($trust_root) ) {
return null;
}
// porting note: PHP's parse_url() is not intended for url validation.
$url_parts = parse_url($trust_root);
if( !$url_parts || !count( $url_parts ) ) {
return false;
}
$proto = isset( $url_parts['scheme'] ) ? $url_parts['scheme'] : null;
$host = isset( $url_parts['host'] ) ? $url_parts['host'] : null;
$port = isset( $url_parts['port'] ) ? $url_parts['port'] : null;
$path = isset( $url_parts['path'] ) ? $url_parts['path'] : null;
// check for valid prototype
$protocols = explode( '|', _oid_protocol_list );
if( !in_array( $proto, $protocols) ) {
return null;
}
// extract wildcard if it is there
if( strchr( $host, '*')) {
// wildcard must be at start of domain) { *.foo.com, not foo.*.com
if( ! TrustRoot::startsWith( $host, '*') ) {
return null;
}
// there should also be a '.' ala *.schtuff.com
if( $host[1] != '.') {
return null;
}
$host = substr( $host, 2 );
$wilcard = true;
}
else {
$wilcard = false;
}
// at least needs to end in a top-level-domain
$ends_in_tld = false;
$_top_level_domains = explode( '|', _oid_top_level_domains_list );
foreach( $_top_level_domains as $tld ) {
if( TrustRoot::endsWith($host, $tld) ) {
$ends_in_tld = true;
break;
}
}
if( !$ends_in_tld) {
return null;
}
// we have a valid trust root
$tr = new TrustRoot($trust_root, $proto, $wilcard, $host, $port, $path);
if( $check_sanity) {
if( !$tr->isSane() ) {
return null;
}
}
return $tr;
}
// static
function checkSanity($trust_root_string) {
// str -> bool
// is this a sane trust root?
$tr = TrustRoot::parse($trust_root_string);
return $tr->isSane();
}
// static
function checkURL($trust_root, $url) {
// quick func for validating a url against a trust root. See the
// TrustRoot class if you need more control.
$tr = TrustRoot::parse($trust_root, true);
return $tr && $tr->validateURL($url);
}
function toString() {
return sprintf( "TrustRoot('%s', '%s', '%s', '%s', '%s', '%s')",
$this->unparsed, $this->proto, $this->wildcard, $this->host, $this->port,
$this->path);
}
function startsWith( $str, $sub ) {
return ( substr( $str, 0, strlen( $sub ) ) == $sub );
}
// return tru if $str ends with $sub
function endsWith( $str, $sub ) {
$len1 = strlen( $str );
$len2 = strlen( $sub );
return $len1 >= $len2 && ( substr( $str, $len1 - $len2 ) == $sub );
}
};
function _oid_trustroot_test() {
print 'Testing...';
// test invalid trust root strings
function assertBad($s) {
$tr = TrustRoot::parse($s);
assert( '$tr == null' );
if( $tr != null ) {
echo $tr->toString() . '<br/>';
exit;
}
}
assertBad('baz.org');
assertBad('*.foo.com');
assertBad('ftp://foo.com');
assertBad('ftp://*.foo.com');
assertBad('http://*.foo.notatld');
assertBad('http://*.foo.com:80:90/');
assertBad('');
assertBad(' ');
assertBad(' \t\n ');
assertBad(null);
assertBad(5);
// test valid trust root string
function assertGood($s) {
$tr = TrustRoot::parse($s);
assert( '$tr != null' );
if( $tr == null ) {
echo $tr->toString() . '<br/>';
exit;
}
}
assertGood('http://*.schtuff.com/');
assertGood('http://*.schtuff.com');
assertGood('http://www.schtuff.com/');
assertGood('http://www.schtuff.com');
assertGood('http://*.this.that.schtuff.com/');
assertGood('http://*.com/');
assertGood('http://*.com');
assertGood('http://*.foo.com/path');
assertGood('http://x.foo.com/path?action=foo2');
assertGood('http://*.foo.com/path?action=foo2');
assertGood('http://localhost:8081/');
function assertSane($s, $truth) {
$tr = TrustRoot::parse($s);
$isSane = $tr->isSane();
assert( '$isSane == $truth' );
if( $isSane != $truth ) {
echo "$isSane, $truth<br/>";
exit;
}
}
assertSane('http://*.schtuff.com/', true);
assertSane('http://*.foo.schtuff.com/', true);
assertSane('http://*.com/', false);
assertSane('http://*.com.au/', false);
assertSane('http://*.co.uk/', false);
assertSane('http://localhost:8082/?action=openid', true);
assertSane('http://greg.abstrakt.ch', true);
// XXX: what exactly is a sane trust root?
// assertSane('http) {//*.k12.va.us/', false)
// validate a url against a trust root
function assertValid($trust_root, $url, $truth) {
$tr = TrustRoot::parse($trust_root);
$isSane = $tr->isSane();
$isValid = $tr->validateURL($url);
assert( '$isSane' );
if( !$isSane ) {
exit;
}
assert( '$isValid == $truth' );
if( $isValid != $truth ) {
exit;
}
}
assertValid('http://*.foo.com', 'http://b.foo.com', true);
assertValid('http://*.foo.com', 'http://hat.baz.foo.com', true);
assertValid('http://*.foo.com', 'http://b.foo.com', true);
assertValid('http://*.b.foo.com', 'http://b.foo.com', true);
assertValid('http://*.b.foo.com', 'http://x.b.foo.com', true);
assertValid('http://*.bar.co.uk', 'http://www.bar.co.uk', true);
assertValid('http://*.uoregon.edu', 'http://*.cs.uoregon.edu', true);
assertValid('http://*.cs.uoregon.edu', 'http://*.uoregon.edu', false);
assertValid('http://*.foo.com', 'http://bar.com', false);
assertValid('http://*.foo.com', 'http://www.bar.com', false);
assertValid('http://*.bar.co.uk', 'http://xxx.co.uk', false);
// path validity
assertValid('http://x.com/abc', 'http://x.com/', false);
assertValid('http://x.com/abc', 'http://x.com/a', false);
assertValid('http://*.x.com/abc', 'http://foo.x.com/abc', true);
assertValid('http://*.x.com/abc', 'http://foo.x.com', false);
assertValid('http://*.x.com', 'http://foo.x.com/gallery', true);
assertValid('http://foo.x.com', 'http://foo.x.com/gallery', true);
assertValid('http://foo.x.com/gallery', 'http://foo.x.com/gallery/xxx', true);
assertValid('http://localhost:8081/x?action=openid',
'http://localhost:8081/x?action=openid', true);
assertValid('http://*.x.com/gallery', 'http://foo.x.com/gallery', true);
assertValid('http://localhost:8082/?action=openid',
'http://localhost:8082/?action=openid', true);
assertValid('http://goathack.livejournal.org:8020/',
'http://goathack.livejournal.org:8020/openid/login.bml', true);
print 'All tests passed!';
}
if( strstr( $_SERVER['REQUEST_URI'], 'trustroot.php' ) ) {
_oid_trustroot_test();
}
?>
--- NEW FILE: LICENSE ---
GNU LESSER GENERAL PUBLIC LICENSE
Version 2.1, February 1999
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--- NEW FILE: interface.php ---
<?php
/*****
PHP OpenID - OpenID consumer and server library
Copyright (C) 2005 Open Source Consulting, SA. and Dan Libby
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
Reciprocal linking. The author humbly requests that if you should use
PHP-OpenID on your website to provide an OpenID enabled service that you
place a link to the author's website ( http://videntity.org ) somewhere
that your users can discover it. You are however under no obligation to
do so.
More info about PHP OpenID:
openid at videntity.org
http://videntity.org/openid/
More info about OpenID:
http://www.openid.net
*****/
class ServerResponse {
var $code;
var $content_type;
var $body;
var $redirect_url;
function ServerResponse( $vars ) {
$attrs = array( 'code', 'content_type', 'body', 'redirect_url' );
foreach( $attrs as $attr ) {
if( isset( $vars[$attr] ) ) {
$this->$attr = $vars[$attr];
}
}
}
};
function redirect( $url ) {
return new ServerResponse( array( 'code'=>302, 'redirect_url'=>$url) );
}
function response_page( $body ) {
return new ServerResponse( array( 'code'=>200, 'content_type'=>'text/plain', 'body'=>$body) );
}
function error_page( $body ) {
return new ServerResponse( array( 'code'=>400, 'content_type'=>'text/plain', 'body'=>$body) );
}
class ConsumerResponse {
// This is a superclass to provide type unification for all the
// various responses the consumer library can provide after
// interpreting an openid query.
// A Visitor pattern interface for dispatching to the various
// subclasses is provided for users of the library who wish to use
// it.
function doAction( $handler ) {
trigger_error( 'unimplemented', E_USER_WARNING );
}
};
class ActionHandler {
function doValidLogin($login) {
trigger_error( 'unimplemented', E_USER_WARNING );
}
function doInvalidLogin() {
trigger_error( 'unimplemented', E_USER_WARNING );
}
function doUserCancelled() {
trigger_error( 'unimplemented', E_USER_WARNING );
}
function doCheckAuthRequired($server_url, $return_to, $post_data) {
trigger_error( 'unimplemented', E_USER_WARNING );
}
function doErrorFromServer($message) {
trigger_error( 'unimplemented', E_USER_WARNING );
}
function createReturnTo($base_url, $identity_url, $args) {
trigger_error( 'unimplemented', E_USER_WARNING );
}
function getOpenID() {
trigger_error( 'unimplemented', E_USER_WARNING );
}
};
class ValidLogin extends ConsumerResponse {
// This subclass is used when the login succeeded. The identity
// parameter is the value that the id server has confirmed.
// This method passes itself into its visitor pattern implementation.
// This is so that its verifyIdentity method can be used in the
// handler funtion.
function ValidLogin($consumer, $identity) {
$this->consumer = $consumer;
$this->identity = $identity;
}
function doAction($handler) {
return $handler->doValidLogin($this);
}
function verifyIdentity($identity) {
// This method verifies that the identity passed in is one
// that this response is actually claiming is valid. It takes
// care of checking if the identity url that the server actually
// verified is delegated to by the identity passed in, if such a
// check is needed. Returns True if the identity passed in was
// authenticated by the server, False otherwise.
error_log( "id: $identity this_id: " . $this->identity . ' ' );
if( $identity == $this->identity ) {
return true;
}
$ret = $this->consumer->find_identity_info($identity);
if( !$ret ) {
return false;
}
return $ret[1] == $this->identity;
}
};
class InvalidLogin extends ConsumerResponse {
// This subclass is used when the login wasn't valid.
function doAction($handler) {
return $handler->doInvalidLogin();
}
};
class UserCancelled extends ConsumerResponse {
// This subclass is used when the user cancelled the login.
function doAction($handler) {
return $handler->doUserCancelled();
}
};
class UserSetupNeeded extends ConsumerResponse {
// This subclass is used when the UA needs to be sent to the given
// user_setup_url to complete their login.
function UserSetupNeeded($user_setup_url) {
$this->user_setup_url = $user_setup_url;
}
function doAction($handler) {
return $handler->doUserSetupNeeded($this->user_setup_url);
}
};
class ErrorFromServer extends ConsumerResponse {
// This subclass is used
function ErrorFromServer($message) {
$this->message = $message;
}
function doAction($handler) {
return $handler->doErrorFromServer($this->message);
}
};
class CheckAuthRequired extends ConsumerResponse {
function CheckAuthRequired($server_url, $return_to, $post_data) {
$this->server_url = $server_url;
$this->return_to = $return_to;
$this->post_data = $post_data;
}
function doAction($handler) {
return $handler->doCheckAuthRequired(
$this->server_url, $this->return_to, $this->post_data);
}
};
class Request {
var $args;
function Request($args, $http_method, $authentication=null) {
// Creates a new Request object, used by both the consumer and
// server APIs. args should be an array map of http arguments,
// whether via post or GET request. http_method should be set to
// either POST or GET, indicating how this request was made.
//
// authentication is a field that isn't used by any library code,
// but exists purely as a pass-through, so that users of the
// server library can verify that a given request has whatever
// authentication credentials are needed to allow it correctly
// calculate the return from get_auth_range. A typical value of
// the authentication field would be the username of the
// logged-in user making the http request from the server.
//
// If an instance of this is created without any openid.* arguments,
// a NoOpenIDArgs warning is raised.
$this->args = array();
$this->http_method = strtoupper($http_method);
$this->authentication = $authentication;
$found = false;
foreach( $args as $k => $v ) {
$needle = 'openid_';
if( substr( $k, 0, strlen($needle)) == $needle ) {
$found = true;
$k = str_replace( $needle, 'openid.', $k );
}
$this->args[$k] = $v;
}
if( !$found ) {
trigger_error( 'NoOpenIDArgs', E_USER_WARNING );
}
}
function get($key, $default=null) {
$k = 'openid.' . $key;
return isset( $this->args[$k] ) ? $this->args[$k] : $default;
}
/*
function __getattr__(attr) {
if attr[0] == '_':
raise AttributeError
val = $this->get(attr)
if val is None:
if attr == 'trust_root':
return $this->return_to
else:
raise ProtocolError('Query argument %r not found' % (attr,))
return val
*/
function get_by_full_key($key, $default=null) {
return $this->get($key, $default);
}
function toString() {
$s = '';
foreach( $this->args as $k => $v ) {
$s .= "$k => $v\n";
}
return $s;
}
};
class ConsumerRequest extends Request {
function ConsumerRequest($openid, $args, $http_method, $authentication=null) {
parent::Request($args, $http_method, $authentication);
$this->openid = $openid;
}
};
?>
--- NEW FILE: consumer.php ---
<?php
/*****
PHP OpenID - OpenID consumer and server library
Copyright (C) 2005 Open Source Consulting, SA. and Dan Libby
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
Reciprocal linking. The author humbly requests that if you should use
PHP-OpenID on your website to provide an OpenID enabled service that you
place a link to the author's website ( http://videntity.org ) somewhere
that your users can discover it. You are however under no obligation to
do so.
More info about PHP OpenID:
openid at videntity.org
http://videntity.org/openid/
More info about OpenID:
http://www.openid.net
*****/
require_once( 'httpclient.php' );
require_once( 'oid_util.php' );
require_once( 'association.php' );
require_once( 'interface.php' );
require_once( 'oid_parse.php' );
class OpenIDConsumerHelper {
// Do not escape anything that is already 7-bit safe, so we do the
// minimal transform on the identity URL
function quote_minimal($s) {
$res = '';
for( $i = 0; $i < strlen($s); $i++ ) {
$c = $s{$i};
if( ord($c) >= 0x80 ) {
$enc_c = utf8_encode( $c );
for( $j = 0; $j < strlen( $enc_c ); $j ++ ) {
$b = $enc_c{$j};
$res .= sprintf('%%%02X', ord($b));
}
}
else {
$res .= $c;
}
}
return $res;
}
// From openID spec:
// The delegate identity URL must be canonical. It will not be further
// processed by the consumer, so be sure it has the "http://" and trailing
// slash, if there's no path component.
function normalize_url($url) {
assert( 'is_string( $url )' );
$url = trim( $url );
// Note: we use parse_url() here rather than checking for http(s) because
// possibly the url contains eg ftp:// and it would be silly to prepend
// http:// to such a url.
$parts = parse_url( $url );
$scheme = isset( $parts['scheme'] ) ? $parts['scheme'] : null;
if( !$scheme ) {
$url = 'http://' . $url;
// If no scheme was found, then path will contain the whole url, which is not what we want,
// so we parse it again.
$parts = parse_url( $url );
}
$path = isset( $parts['path'] ) ? $parts['path'] : null;
if( !$path ) {
$url .= '/';
}
// Porting Todo: handle unicode urls.
/*
if isinstance(url, unicode) {
parsed = urlparse.urlparse(url)
authority = parsed[1].encode('idna')
tail = map(quote_minimal, parsed[2:])
encoded = (str(parsed[0]), authority) + tuple(tail)
url = urlparse.urlunparse(encoded)
assert type(url) is str
*/
return $url;
}
};
class OpenIDConsumer {
function OpenIDConsumer($http_client=null, $assoc_mngr=null) {
$this->http_client = $http_client ? $http_client : HTTPClient::getHTTPClient();
$this->assoc_mngr = $assoc_mngr ? $assoc_mngr : new DumbAssociationManager();
}
function handle_request($server_id, $server_url, $return_to,
$trust_root=null, $immediate=false,
$required_fields=null) {
// Returns the url to redirect to, where server_id is the
// identity url the server is checking and server_url is the url
// of the openid server.
$redir_args = array( 'openid.identity' => $server_id,
'openid.return_to' => $return_to );
if( $trust_root ) {
$redir_args['openid.trust_root'] = $trust_root;
}
if( $immediate ) {
$mode = 'checkid_immediate';
}
else {
$mode = 'checkid_setup';
}
$redir_args['openid.mode'] = $mode;
if ($required_fields) {
$redir_args['openid.sreg.required'] = $required_fields;
}
$assoc_handle = $this->assoc_mngr->associate($server_url);
if( $assoc_handle ) {
$redir_args['openid.assoc_handle'] = $assoc_handle;
}
return oidUtil::append_args($server_url, $redir_args);
}
function handle_response($req) {
// Handles an OpenID GET request with openid.mode in the
// arguments. req should be a Request instance, properly
// initialized with the http arguments given, and the http method
// used to make the request.
// This method returns a subclass of
// openid.interface.ConsumerResponse. See the openid.interface
// module for the list of subclasses possible.
if( $req->http_method != 'GET' ) {
$error = sprintf( 'Expected HTTP Method "GET", got %s', $req->get('http_method') );
// raise ProtocolError( $error )
trigger_error( $error, E_USER_ERROR );
}
$func = 'do_' . $req->get('mode');
if( !method_exists( $this, $func ) ) {
$error = sprintf( "Unknown Mode: %s", $req->get('mode') );
// raise ProtocolError( $error )
trigger_error( $error, E_USER_ERROR );
}
return $this->$func($req);
}
function find_identity_info($identity_url) {
// Returns (consumer_id, server_id, server_url) or null if no
// server found. Fetch url and parse openid.server and
// potentially openid.delegate urls. consumer_id is the identity
// url the consumer should use. It is the url after following
// any redirects the url passed in might use. server_id is the
// url actually sent to the server to verify, and may be the
// result of finding a delegate link.
$url = OpenIDConsumerHelper::normalize_url($identity_url);
$ret = $this->http_client->get($url);
if( !$ret ) {
return null;
}
list( $consumer_id, $data ) = $ret;
$server = null;
$delegate = null;
$link_attrs = oidParse::parseLinkAttrs($data);
foreach( $link_attrs as $attrs ) {
$rel = isset( $attrs['rel'] ) ? $attrs['rel'] : null;
if( $rel == 'openid.server' && !$server ) {
$href = isset( $attrs['href'] ) ? $attrs['href'] : null;
if( $href ) {
$server = $href;
}
}
if( $rel == 'openid.delegate' && !$delegate ) {
$href = isset( $attrs['href'] ) ? $attrs['href'] : null;
if( $href ) {
$delegate = $href;
}
}
}
if( !$server ) {
return null;
}
if( $delegate ) {
$server_id = $delegate;
}
else {
$server_id = $consumer_id;
}
return array( $consumer_id, $server_id, $server );
}
function create_return_to($url, $identity_url, $kwargs) {
// Returns an return_to url, with required identity_url, and
// optional args
$kwargs['identity'] = $identity_url;
return oidUtil::append_args($url, $kwargs);
}
function check_auth($server_url, $return_to, $post_data, $openid) {
// This method is called to perform the openid.mode =
// check_authentication call. The identity argument should be
// the identity url you are confirming (from the consumer's
// viewpoint, ie. not a delegated identity). The return_to and
// post_data arguments should be as contained in the
// CheckAuthRequired object returned by a previous call to
// handle_response.
if( !$this->verify_return_to($return_to) ) {
return new InvalidLogin();
}
// This is *required* because of PHP changing "." to "_" in URL
// argument attributes, but not in values. And here some items
// of the signed field argument value should exactly match the
// name of some attributes given in the same URL. Understood?!
// (Choplair)
$post_data = str_replace('sreg_', 'sreg.', $post_data);
$ret = $this->http_client->post($server_url, $post_data);
if( !$ret ) {
return new InvalidLogin();
}
$data = $ret[1];
$results = oidUtil::parsekv($data);
$is_valid = isset( $results['is_valid'] ) ? $results['is_valid'] : 'false';
if( $is_valid == 'true' ) {
$invalidate_handle = isset( $results['invalidate_handle'] ) ? $results['invalidate_handle'] : null;
if( $invalidate_handle ) {
$this->assoc_mngr->invalidate($server_url, $invalidate_handle);
}
parse_str( $post_data, $vars );
error_log( "post_data: $post_data " );
error_log( serialize($vars) . " " );
$key = 'openid_identity'; // php replaces . with _
$identity = isset( $vars[$key] ) ? $vars[$key] : null;
$vl = new ValidLogin($this, $identity);
if( $vl->verifyIdentity($openid) ) {
return $vl;
}
}
else {
$error = isset( $results['openid.error'] ) ? $results['openid.error'] : null;
if( $error ) {
$str = sprintf( 'Server Response: %s', $error );
return new ErrorFromServer( $str );
}
}
return new InvalidLogin();
}
function do_id_res($req) {
if( !$this->verify_return_to($req->get('return_to')) ) {
return new InvalidLogin();
}
$user_setup_url = $req->get('user_setup_url');
if( $user_setup_url ) {
return new UserSetupNeeded($user_setup_url);
}
$server_url = $this->determine_server_url($req);
$assoc = $this->assoc_mngr->get_association($server_url, $req->get('assoc_handle'));
if( !$assoc ) {
// No matching association found. I guess we're in dumb mode...
$check_args = array();
foreach( $req->args as $k => $v ) {
if( oidUtil::startsWith($k, 'openid.') ) {
$check_args[$k] = $v;
}
}
$check_args['openid.mode'] = 'check_authentication';
$post_data = http_build_query( $check_args );
return new CheckAuthRequired($server_url, $req->get('return_to'), $post_data);
}
// Check the signature
$sig = $req->get('sig');
$signed_fields = explode( ',', trim( $req->get('signed') ) );
list( $_signed, $v_sig ) = oidUtil::sign_reply($req->args, $assoc->secret, $signed_fields);
if( $v_sig != $sig ) {
return new InvalidLogin();
}
$vl = new ValidLogin($this, $req->get('identity') );
if( $vl->verifyIdentity($req->openid ) ) {
return $vl;
}
return new InvalidLogin();
}
function do_error($req) {
$error = $req->get('error');
if( !$error ) {
$str = sprintf( 'Unspecified Server Error: %s', $req->toString() );
return new ErrorFromServer( $str );
}
else {
$str = sprintf( 'Server Response: %s', $error );
return new ErrorFromServer($str);
}
}
function do_cancel($unused_req) {
return new UserCancelled();
}
// Callbacks
function determine_server_url($req) {
// Returns the url of the identity server for the identity in
// the request.
// Subclasses might extract the server_url from a cache or from a
// signed parameter specified in the return_to url passed to
// initialRequest.
// The default implementation fetches the identity page again,
// and parses the server url out of it.
// Grab the server_url from the identity in args
$ret = $this->find_identity_info($req->get('identity'));
if( !$ret ) {
$error = sprintf( 'ID URL %s seems not to be an OpenID identity.', $req->get('identity') );
// raise ValueMismatchError( $error )
trigger_error( $error, E_USER_ERROR );
}
list( $unused, $server_id, $server_url ) = $ret;
if( $req->get('identity') != $server_id ) {
$error = sprintf( 'ID URL %r seems to have moved: %s', $req->get('identity'), $server_id );
// raise ValueMismatchError( $error )
trigger_error( $error, E_USER_ERROR );
}
return $server_url;
}
function verify_return_to($return_to) {
// This method is called before the consumer makes a
// check_authentication call to the server. It helps verify that
// the request being authenticated is valid by confirming that
// the openid.return_to value signed by the server corresponds to
// this consumer. The return value should be True if the
// return_to field corresponds to this consumer, or false
// otherwise. This method must be overridden, as it has no
// default implementation.
trigger_error( 'unimplemented', E_USER_WARNING );
}
};
?>
--- NEW FILE: oid_parse.php ---
<?php
/*****
PHP OpenID - OpenID consumer and server library
Copyright (C) 2005 Open Source Consulting, SA. and Dan Libby
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
Reciprocal linking. The author humbly requests that if you should use
PHP-OpenID on your website to provide an OpenID enabled service that you
place a link to the author's website ( http://videntity.org ) somewhere
that your users can discover it. You are however under no obligation to
do so.
More info about PHP OpenID:
openid at videntity.org
http://videntity.org/openid/
More info about OpenID:
http://www.openid.net
*****/
class oidParse {
// static, public
// parses html data and returns <link> tag attributes.
//
// The return value is an array where each element
// is a sub-array containing all attribute/value
// pairs from a single <link> tag.
function parseLinkAttrs($data) {
$tidy_ver = phpversion('tidy');
if( (int)$tidy_ver == 2 ) {
return oidParse::_parseLinkAttrsWithTidy2( $data );
}
// Todo: We could also have a method that uses Tidy1. volunteers?
else {
return oidParse::_parseLinkAttrsWithPreg( $data );
}
// Todo: We could also have a method that uses ereg. volunteers?
}
// static, private
// parses all link attrs from an html page using perl regex ( preg/pcre )
function _parseLinkAttrsWithPreg( $text ) {
$tag_list = array();
// find all tags
preg_match_all('/<[^>]+>/s',$text,$tags);
foreach ($tags[0] as $tag) {
$gotten = preg_match('/^<\s*link\s*(.*)>/i',$tag,$alist);
if ($gotten) {
// print "<b>$alist[1]</b><br>";
$cleaned = preg_replace('/\s+=\s+/','=',$alist[1]);
preg_match_all('/(?:^|\s)(\w+)="([^">]+)"/',$cleaned,$qatts);
preg_match_all('/(?:^|\s)(\w+)=([^"\s>]+)/',$cleaned,$patts);
$allatts = array_merge($patts[1],$qatts[1]);
$allvals = array_merge($patts[2],$qatts[2]);
$attrs = array();
for ($k=0; $k<count($allatts); $k++) {
$attrs[$allatts[$k]] = $allvals[$k];
}
$tag_list[] = $attrs;
}
}
return $tag_list;
}
// static, private
function _parseLinkAttrsWithTidy2Worker( $node, &$link_tags ) {
$link_tags = $link_tags ? $link_tags : array();
if(isset($node->id)) {
if($node->id == TIDY_TAG_LINK ) {
// $node->attribute is actually a mapped array with
// key/val pairs for each of the nodes attributes.
$link_tags[] = $node->attribute;
}
}
if( $node->hasChildren() ) {
foreach($node->child as $next) {
oidParse::_parseLinkAttrsWithTidy2Worker($next, $link_tags );
}
}
return $link_tags;
}
// static, private
function _parseLinkAttrsWithTidy2( $html ) {
$tree = tidy_parse_string( $html );
$tags = null;
return oidParse::_parseLinkAttrsWithTidy2Worker( $tree->html(), $tags );
}
};
?>
--- NEW FILE: server.php ---
<?php
/*****
PHP OpenID - OpenID consumer and server library
Copyright (C) 2005 Open Source Consulting, SA. and Dan Libby
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
Reciprocal linking. The author humbly requests that if you should use
PHP-OpenID on your website to provide an OpenID enabled service that you
place a link to the author's website ( http://videntity.org ) somewhere
that your users can discover it. You are however under no obligation to
do so.
More info about PHP OpenID:
openid at videntity.org
http://videntity.org/openid/
More info about OpenID:
http://www.openid.net
*****/
require_once( 'oid_util.php' );
require_once( 'interface.php' );
require_once( 'trustroot.php' );
define( '_oid_authentication_error', -1);
class OpenIDServer {
function OpenIDServer($internal_store, $external_store, $srand=null) {
// srand should be a cryptographic-quality source of random
// bytes, if Diffie-Helman secret exchange is to be supported.
// On systems where it is available, an instance of
// random.SystemRandom is a good choice.
$this->istore = $internal_store;
$this->estore = $external_store;
$this->srand = $srand;
}
function handle($req) {
// Handles an OpenID request. req should be a Request
// instance, properly initialized with the http arguments given,
// and the method used to make the request. Returns a Response
// instance with the necessary fields set to indicate the
// appropriate action.
$method_name = 'do_' . $req->get('mode');
if( !method_exists( $this, $method_name ) ) {
$error = sprintf('Unsupported openid.mode: %s', $req->get('mode') );
$return_to = $req->get( 'return_to' );
if( $req->get( 'http_method' ) == 'GET' && $return_to ) {
return redirect( oidUtil::append_args(return_to, $edict));
}
else {
return OpenIDServer::_error_page( $error );
}
}
return $this->$method_name($req);
}
function do_associate($req) {
// Performs the actions needed for openid.mode=associate. If
// srand was provided when constructing this server instance,
// this method supports the DH-SHA1 openid.session_type when
// requested. This function requires that $this->get_new_secret be
// overriden to function properly. Returns a Response object
// indicating what should be sent back to the consumer.
$reply = array();
$assoc_type = $req->get('openid.assoc_type', 'HMAC-SHA1');
$assoc = $this->estore->get($assoc_type);
$session_type = $req->get('session_type');
if( $session_type ) {
if( $session_type == 'DH-SHA1' ) {
$p = $req->get('dh_modulus');
$g = $req->get('dh_gen');
$dh = DiffieHellman::fromBase64($p, $g, $this->srand);
$cpub = oidUtil::a2long( oidUtil::from_b64($req->get( 'dh_consumer_public' )) );
$dh_shared = $dh->decryptKeyExchange($cpub);
$mac_key = oidUtil::strxor( $assoc->secret, oidUtil::sha1( oidUtil::long2a($dh_shared) ));
$spub = $dh->createKeyExchange();
$reply['session_type'] = $session_type;
$reply['dh_server_public'] = oidUtil::to_b64(oidUtil::long2a($spub));
$reply['enc_mac_key'] = oidUtil::to_b64($mac_key);
// error_log( "assoc.secret: " . $assoc->secret );
// error_log( "dh_server_public: " . $reply['dh_server_public'] );
// error_log( "dh_server_public_raw: " . $spub );
// error_log( "enc_mac_key: " . $reply['enc_mac_key'] );
}
else {
// raise ProtocolError('session_type must be DH-SHA1');
$error = 'session_type must be DH-SHA1';
return OpenIDServer::_error_page( $error );
}
}
else {
$reply['mac_key'] = oidUtil::to_b64($assoc->secret);
}
$reply['assoc_type'] = $assoc_type;
$reply['assoc_handle'] = $assoc->handle;
$reply['expires_in'] = $assoc->get_expires_in();
return response_page(oidUtil::kvform($reply));
}
function do_checkid_immediate($req) {
/*
try:
return $this->checkid(req)
except AuthenticationError:
user_setup_url = $this->get_user_setup_url(req)
reply = {
'openid.mode': 'id_res',
'openid.user_setup_url': user_setup_url,
}
return redirect(append_args(req.return_to, reply))
*/
$rc = $this->checkid($req);
if( is_int($rc) && $rc == _oid_authentication_error ) {
$user_setup_url = $this->get_user_setup_url($req);
$reply = array(
'openid.mode' => 'id_res',
'openid.user_setup_url' => $user_setup_url
);
return redirect(oidUtil::append_args($req->get( 'return_to' ), $reply));
}
return $rc;
}
function do_checkid_setup($req) {
/*
try:
return $this->checkid(req)
except AuthenticationError:
return $this->get_setup_response(req)
*/
$rc = $this->checkid($req);
if( is_int( $rc ) && $rc == _oid_authentication_error ) {
return $this->get_setup_response($req);
}
return $rc;
}
// errors:
// _oid_authentication_error
function checkid($req) {
// This function does the logic for the checkid functions.
// Since the only difference in behavior between them is how
// authentication errors are handled, this does all logic for
// dealing with successful authentication, and raises an
// exception for its caller to handle on a failed authentication.
$tr = TrustRoot::parse($req->get('trust_root') );
if( !$tr ) {
//raise ProtocolError('Malformed trust_root: %s' % req.trust_root)
$error = sprintf('Malformed trust_root: %s', $req->get('trust_root'));
return OpenIDServer::_error_page( $error );
}
if( !$tr->isSane() ) {
// raise ProtocolError('trust_root %r makes no sense' % req.trust_root)
$error = sprintf( 'trust_root %s makes no sense', $req->get('trust_root'));
return OpenIDServer::_error_page( $error );
}
if( !$tr->validateURL($req->get('return_to')) ) {
// raise ProtocolError('url(%s) not valid against trust_root(%s)' % (
// req.return_to, req.trust_root))
$error = sprintf( 'url(%s) not valid against trust_root(%s)', $req->get('return_to'), $req->get('trust_root'));
return OpenIDServer::_error_page( $error );
}
if( !$this->is_valid($req) ) {
// raise AuthenticationError
return _oid_authentication_error;
}
$reply = array(
'openid.mode' => 'id_res',
'openid.return_to' => $req->get('return_to'),
'openid.identity' => $req->get('identity')
);
$assoc_handle = $req->get('assoc_handle');
if( $assoc_handle ) {
$assoc = $this->estore->lookup($assoc_handle, 'HMAC-SHA1');
// fall back to dumb mode if assoc_handle not found,
// and send the consumer an invalidate_handle message
if( !$assoc || $assoc->get_expires_in() <= 0 ) {
if( $assoc && $assoc->get_expires_in() <= 0 ) {
$this->estore->remove($assoc->handle);
}
$assoc = $this->istore->get('HMAC-SHA1');
$reply['openid.invalidate_handle'] = $assoc_handle;
}
}
else {
$assoc = $this->istore->get('HMAC-SHA1');
}
$reply['openid.assoc_handle'] = $assoc->handle;
$_signed_fields = array('mode', 'identity', 'return_to');
list( $signed, $sig ) = oidUtil::sign_reply($reply, $assoc->secret, $_signed_fields );
$reply['openid.signed'] = $signed;
$reply['openid.sig'] = $sig;
return redirect(oidUtil::append_args($req->get('return_to'), $reply));
}
function do_check_authentication($req) {
$handle = $req->get('assoc_handle');
// Last step in dumb mode
$assoc = $this->istore->lookup($req->get('assoc_handle'), 'HMAC-SHA1');
if( !$assoc ) {
// raise ProtocolError('no secret found for %r' % req.assoc_handle)
$error = sprintf( 'no secret found for %r', $req->get('assoc_handle') );
// trigger_error( $error, $E_USER_WARNING );
return OpenIDServer::_error_page( $error );
}
$reply = array();
if( $assoc->get_expires_in() > 0 ) {
$token = $req->args;
$token['openid.mode'] = 'id_res';
$signed_fields = explode(',', trim($req->get('signed')));
list( $ignore, $v_sig ) = oidUtil::sign_reply($token, $assoc->secret, $signed_fields);
if( $v_sig == $req->get('sig') ) {
$is_valid = 'true';
// if an invalidate_handle request is present, verify it
$invalidate_handle = $req->get('invalidate_handle');
if( $invalidate_handle ) {
if( !$this->estore->lookup($invalidate_handle, 'HMAC-SHA1') ) {
$reply['invalidate_handle'] = $invalidate_handle;
}
}
}
else {
$is_valid = 'false';
}
}
else {
$this->istore->remove($req->get('assoc_handle'));
$is_valid = 'false';
}
$reply['is_valid'] = $is_valid;
return response_page(oidUtil::kvform($reply));
}
// private
function _error_page( $error ) {
$edict = array(
'openid.mode' => 'error',
'openid.error' => $error
);
return error_page(oidUtil::kvform($edict));
}
// Callbacks:
function is_valid($req) {
// If a valid authentication is supplied as part of the
// request, and allows the given trust_root to authenticate the
// identity url, this returns True. Otherwise, it returns False.
trigger_error( 'unimplemented', E_USER_WARNING );
}
function get_user_setup_url($req) {
// If an identity has failed to authenticate for a given
// trust_root in immediate mode, this is called. It returns the
// URL to include as the user_setup_url in the redirect sent to
// the consumer.
trigger_error( 'unimplemented', E_USER_WARNING );
}
function get_setup_response($req) {
// If an identity has failed to authenticate for a given
// trust_root in setup mode, this is called. It returns a
// Response object containing either a page to draw or a redirect
// to issue.
trigger_error( 'unimplemented', E_USER_WARNING );
}
};
?>
--- NEW FILE: COPYING ---
PHP OpenID - OpenID consumer and server library
Copyright (C) 2005 Open Source Consulting, SA. and Dan Libby
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
Reciprocal linking. The author humbly requests that if you should use
PHP-OpenID on your website to provide an OpenID enabled service that you
place a link to the author's website ( http://videntity.org ) somewhere
that your users can discover it. You are however under no obligation to
do so.
More info about PHP OpenID:
openid at videntity.org
http://videntity.org/openid/
More info about OpenID:
http://www.openid.net
--- NEW FILE: oid_util.php ---
<?php
/*****
PHP OpenID - OpenID consumer and server library
Copyright (C) 2005 Open Source Consulting, SA. and Dan Libby
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
Reciprocal linking. The author humbly requests that if you should use
PHP-OpenID on your website to provide an OpenID enabled service that you
place a link to the author's website ( http://videntity.org ) somewhere
that your users can discover it. You are however under no obligation to
do so.
More info about PHP OpenID:
openid at videntity.org
http://videntity.org/openid/
More info about OpenID:
http://www.openid.net
*****/
// for compatibility with versions of php without http_build_query
// from http://php.net/manual/en/function.http-build-query.php#52789
// Note: It does not work with complex arrays.
if (!function_exists('http_build_query')) {
function http_build_query($formdata, $numeric_prefix = "")
{
$arr = array();
foreach ($formdata as $key => $val)
$arr[] = urlencode($numeric_prefix.$key)."=".urlencode($val);
return implode($arr, '&');
}
}
class oidUtil {
function hmacsha1( $key, $text ) {
return oidUtilPhpSha1::hmacsha1( $key, $text );
}
function sha1( $s ) {
return oidUtilPhpSha1::sha1( $s );
}
// Note: in php we don't really convert to a long because php doesn't
// support values this large.
//
// instead we return a string converted from hex to base 10.
function a2long($l) {
$len = strlen($l);
// transform bytes/char values into hex number
$foo = unpack("H".(2*$len), $l);
$hex = array_pop($foo);
return oidUtilPhpBigInt::base_convert( $hex, 16, 10 );
}
// Note: in php we aren't really expecting a long as input.
// Rather we expect a string containing a base 10 number.
//
// we return a packed (byte) string containing a base 16 number.
function long2a($a) {
$hex = oidUtilPhpBigInt::base_convert( $a, 10, 16 );
// pad
if (strlen($hex) % 2) {
$hex = "0" . $hex; // pad leading hex nibble
}
if (ord($hex[0]) >= ord('8')) {
$hex = "00" . $hex; // pad if it looks like negative number
}
// into bytestream
return pack("H*", $hex);
}
function to_b64($s) {
// Represent string s as base64, omitting newlines
return base64_encode($s);
}
function from_b64($s) {
return base64_decode($s);
}
function kvform($ma) {
// Represent mapped array ma as newline-terminated key:value pairs
$str = '';
foreach( $ma as $key => $val ) {
$str .= sprintf( "%s:%s\n", $key, $val );
}
return $str;
}
function parsekv( $d ) {
$d = trim($d);
$args = array();
$lines = explode( "\n", $d );
foreach( $lines as $line ) {
$pair = explode( ':', $line, 2 );
if( count($pair) != 2 ) {
continue;
}
list($k,$v) = $pair;
$args[trim($k)] = trim($v);
}
return $args;
}
function strxor( $aa, $bb ) {
$buf = '';
$len = min( strlen($aa), strlen($bb) );
for ($i=0; $i<$len; $i++) {
$buf .= chr( ord($aa[$i]) ^ ord($bb[$i]) );
}
return $buf;
}
function sign_reply($reply, $key, $signed_fields ) {
// Sign the given fields from the reply with the specified key.
// Return signed and sig
$text = '';
foreach( $signed_fields as $i ) {
$val = $reply['openid.' . $i];
$text .= sprintf( "%s:%s\n", $i, $val );
}
$sha1 = oidUtil::hmacsha1($key, $text);
$b64_sha1 = oidUtil::to_b64( $sha1 );
return array( implode( ',', $signed_fields ), $b64_sha1 );
}
function append_args( $url, $args ) {
if( count($args) == 0 ) {
return url;
}
$sep = strchr( $url, '?') ? '&' : '?';
return sprintf('%s%s%s', $url, $sep, http_build_query($args));
}
function random_string($length, $srand = null) {
if( $srand ) {
srand( $srand );
}
$a = '';
for( $i = 0; $i < $length; $i++ ) {
$a .= chr(rand(0,255));
}
return $a;
}
// PHP lacks these very handy string functions, startsWith and endsWith.
// included here for easier porting from python.
function startsWith( $str, $sub ) {
return ( substr( $str, 0, strlen( $sub ) ) == $sub );
}
// return tru if $str ends with $sub
function endsWith( $str, $sub ) {
$len1 = strlen( $str );
$len2 = strlen( $sub );
return $len1 >= $len2 && ( substr( $str, $len1 - $len2 ) == $sub );
}
};
// Porting note. This class does not exist in python.
// It was created to abstract the various implementations of sha1
// available ( or not available ) in php >= 4.x
class oidUtilPhpSha1 {
// static
function hmacsha1( $key, $text ) {
if( function_exists( 'mhash' ) ) {
// yay, we have mhash!
return mhash(MHASH_SHA1, $text, $key);
}
else {
// do it ourselves.
return oidUtilPhpSha1::_hmacsha1( $key, $text );
}
}
// static
function sha1( $s ) {
if( function_exists( 'mhash' ) ) {
// we have mhash, yay!
return mhash(MHASH_SHA1, $s);
}
else if( function_exists( 'sha1' ) ) {
// we have php's sha1, okie dokie
if ((int)PHP_VERSION>=5) {
return sha1($s, true);
} else {
// before php5, php does not support raw output.
return pack("H*", sha1($s));
}
}
else {
// gotta do it ourselves.
return oidUtilPhpSha1::_sha1_raw( $s );
}
}
// private
// adapted from from http://php.net/manual/en/function.sha1.php#39492
// mark at dot BANSPAM dot pronexus dot nl
function _hmacsha1($key,$data) {
$blocksize=64;
if (strlen($key)>$blocksize) {
$key=oidUtilPhpSha1::sha1($key);
}
$key=str_pad($key,$blocksize,chr(0x00));
$ipad=str_repeat(chr(0x36),$blocksize);
$opad=str_repeat(chr(0x5c),$blocksize);
$hmac = oidUtilPhpSha1::sha1( ($key^$opad) . oidUtilPhpSha1::sha1( ($key^$ipad) . $data ) );
return $hmac;
}
// private
// php implementation of sha1, for older php versions. reportedly fast.
// adapted from http://php.net/manual/en/function.sha1.php#48856
// mina86 at tlen dot pl
function _sha1_step(&$H, $str) {
$A = $H[0]; $B = $H[1]; $C = $H[2]; $D = $H[3]; $E = $H[4];
$W = array_values(unpack('N16', $str));
for ($i = 0; $i<16; ++$i) {
$W[$i+16] = &$W[$i];
}
$t = 0;
do { // 0 <= t < 20
$s = $t & 0xf;
if ($t>=16) {
$W[$s] = oidUtilPhpSha1::_sha1_s($W[$s+13] ^ $W[$s+8] ^ $W[$s+ 2] ^ $W[$s]);
}
$TEMP = ($D ^ ($B & ($C ^ $D))) + 0x5A827999 +
oidUtilPhpSha1::_sha1_s($A, 5) + $E + $W[$s];
$E = $D; $D = $C; $C = oidUtilPhpSha1::_sha1_s($B, 30); $B = $A; $A = $TEMP;
} while (++$t<20);
do { // 20 <= t < 40
$s = $t & 0xf;
$W[$s] = oidUtilPhpSha1::_sha1_s($W[$s+13] ^ $W[$s+8] ^ $W[$s+ 2] ^ $W[$s]);
$TEMP = ($B ^ $C ^ $D) + 0x6ED9EBA1 +
oidUtilPhpSha1::_sha1_s($A, 5) + $E + $W[$s];
$E = $D; $D = $C; $C = oidUtilPhpSha1::_sha1_s($B, 30); $B = $A; $A = $TEMP;
} while (++$t<40);
do { // 40 <= t < 60
$s = $t & 0xf;
$W[$s] = oidUtilPhpSha1::_sha1_s($W[$s+13] ^ $W[$s+8] ^ $W[$s+ 2] ^ $W[$s]);
$TEMP = (($B & $C) | ($D & ($B | $C))) + 0x8F1BBCDC +
oidUtilPhpSha1::_sha1_s($A, 5) + $E + $W[$s];
$E = $D; $D = $C; $C = oidUtilPhpSha1::_sha1_s($B, 30); $B = $A; $A = $TEMP;
} while (++$t<60);
do { // 60 <= t < 80
$s = $t & 0xf;
$W[$s] = oidUtilPhpSha1::_sha1_s($W[$s+13] ^ $W[$s+8] ^ $W[$s+ 2] ^ $W[$s]);
$TEMP = ($B ^ $C ^ $D) + 0xCA62C1D6 +
oidUtilPhpSha1::_sha1_s($A, 5) + $E + $W[$s];
$E = $D; $D = $C; $C = oidUtilPhpSha1::_sha1_s($B, 30); $B = $A; $A = $TEMP;
} while (++$t<80);
$H = array($H[0] + $A, $H[1] + $B, $H[2] + $C, $H[3] + $D, $H[4] + $E);
}
// private
// php implementation of sha1, for older php versions. reportedly fast.
// adapted from http://php.net/manual/en/function.sha1.php#48856
// mina86 at tlen dot pl
function _sha1_s($X, $n = 1) {
return ($X << $n) | (($X & 0x80000000)?
(($X>>1) & 0x07fffffff | 0x40000000)>>(31-$n):$X>>(32-$n));
}
// private
// php implementation of sha1, for older php versions. reportedly fast.
// adapted from http://php.net/manual/en/function.sha1.php#48856
// mina86 at tlen dot pl
function &_sha1_raw($str) {
$l = strlen($str);
$str = str_pad("$str\x80\0\0\0\0", ($l&~63)+((($l&63)<56)?60:124),
"\0") . pack('N', $l<<3);
$l = strlen($str);
$H = array(0x67452301, 0xEFCDAB89, 0x98BADCFE, 0x10325476, 0xC3D2E1F0);
for ($i = 0; $i<$l; $i += 64) {
oidUtilPhpSha1::_sha1_step($H, substr($str, $i, 64));
}
$raw = pack('N*', $H[0], $H[1], $H[2], $H[3], $H[4]);
return $raw;
}
};
// Porting note. This class does not exist in python.
// It was created to abstract the various implementations of bigint
// available ( or not available ) in php >= 4.x
class oidUtilPhpBigInt {
// static
// adapted from xprofile's openlid
// http://xprofile.berlios.de/OpenLid
function powm( $base, $exponent, $modulus ) {
if( function_exists('gmp_powm')) {
return gmp_strval(gmp_powm($base, $exponent, $modulus));
}
else if( function_exists('bi_powmod')) {
return bi_sto_str(bi_powmod($base, $exponent, $modulus));
}
else if( function_exists( 'bcpowmod' ) ) {
return bcpowmod( $base, $exponent, $modulus );
}
// Warning: here we give up on php and call python or perl to help us out.
// I'd like to replace this with native php code. Anyone know of
// a good/fast implementation of powmod in php?
// Anyway, if you don't want perl or python executed, comment out
// this else clause.
else if( preg_match("/^\d+,\d+,\d+$/", "$base,$exponent,$modulus")) {
//@FIX: this is insecure - a bi-directional proc_open() is required
if (is_executable("/usr/bin/python")) {
$r = trim(`python -c "print pow($base, $exponent, $modulus)"`);
}
else {
$r = trim(`perl -e "use Math::BigInt; print Math::BigInt->new('$base')->bmodpow('$exponent', '$modulus')->bstr();"`);
}
if (preg_match("/^\d+$/", $r)) {
return($r);
}
}
trigger_error("powmod: unsupported or non-integer argument", E_USER_ERROR);
}
// static
function random( $minval ) {
if( function_exists( 'gmp_random' ) ) {
$limb_cnt = 31;
do {
$rdm = gmp_random($limb_cnt--);
} while (gmp_cmp( $minval, $rdm) > 0);
return gmp_strval($rdm);
}
else {
// FIXME: does not honor minval
return rand( 0, getrandmax() );
}
}
// static
function base_convert( $numstring, $frombase, $tobase ) {
if ( function_exists('gmp_strval')) {
return gmp_strval( gmp_init($numstring, $frombase), $tobase);
}
else if ( function_exists('bi_base_convert')) {
return bi_base_convert($numstring, $frombase, $tobase );
}
else {
return oidUtilPhpBigInt::_base_convert($numstring, $frombase, $tobase);
}
}
// private
//
// From comment at http://php.net/manual/en/function.base-convert.php
// by rithiur at mbnet dot fi
//
// Here is a simple function that can convert numbers of any size.
// However, note that as the division is performed manually to the
// number, this function is not very efficient and may not be suitable
// for converting strings with more than a few hundred numbers
// (depending on the number bases).
function _base_convert($numstring, $frombase, $tobase)
{
$hex = '0123456789abcdef';
$from_count = $frombase;
$to_count = $tobase;
$length = strlen($numstring);
$result = '';
$number = array();
for ($i = 0; $i < $length; $i++)
{
$number[$i] = strpos($hex, $numstring{$i});
}
do // Loop until whole number is converted
{
$divide = 0;
$newlen = 0;
for ($i = 0; $i < $length; $i++) // Perform division manually (which is why this works with big numbers)
{
$divide = $divide * $from_count + $number[$i];
if ($divide >= $to_count)
{
$number[$newlen++] = (int)($divide / $to_count);
$divide = $divide % $to_count;
}
elseif ($newlen > 0)
{
$number[$newlen++] = 0;
}
}
$length = $newlen;
$result = $hex{$divide} . $result; // Divide is basically $numstring % $to_count (i.e. the new character)
}
while ($newlen != 0);
return $result;
}
};
class DiffieHellman {
var $DEFAULT_MOD = '155172898181473697471232257763715539915724801966915404479707795314057629378541917580651227423698188993727816152646631438561595825688188889951272158842675419950341258706556549803580104870537681476726513255747040765857479291291572334510643245094715007229621094194349783925984760375594985848253359305585439638443';
var $DEFAULT_GEN = '2';
var $p;
var $g;
var $x;
// static
function fromBase64( $p = null, $g = null, $srand = null ) {
if( $p ) {
$p = oidUtil::a2long(oidUtil::from_b64($p));
}
if( $g ) {
$g = oidUtil::a2long(oidUtil::from_b64($g));
}
return new DiffieHellman($p, $g, $srand);
}
function DiffieHellman( $p = null, $g = null, $srand = null ) {
$this->p = $p ? $p : $this->DEFAULT_MOD;
$this->g = $g ? $g : $this->DEFAULT_GEN;
if( $srand ) {
$this->x = $srand;
}
else {
$this->x = oidUtilPhpBigInt::random( $this->p );
}
}
function createKeyExchange( ) {
return oidUtilPhpBigInt::powm( $this->g, $this->x, $this->p);
}
function decryptKeyExchange( $keyEx ) {
return oidUtilPhpBigInt::powm( $keyEx, $this->x, $this->p );
}
}
?>
--- NEW FILE: association.php ---
<?php
/*****
PHP OpenID - OpenID consumer and server library
Copyright (C) 2005 Open Source Consulting, SA. and Dan Libby
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
Reciprocal linking. The author humbly requests that if you should use
PHP-OpenID on your website to provide an OpenID enabled service that you
place a link to the author's website ( http://videntity.org ) somewhere
that your users can discover it. You are however under no obligation to
do so.
More info about PHP OpenID:
openid at videntity.org
http://videntity.org/openid/
More info about OpenID:
http://www.openid.net
*****/
require_once( 'oid_util.php' );
class Association {
// static
function from_expires_in( $handle, $secret, $expires_in ) {
return new Association( $handle, $secret, time(), $expires_in );
}
function Association($handle, $secret, $issued, $lifetime) {
$this->handle = $handle;
$this->secret = $secret;
$this->issued = (int)$issued;
$this->lifetime = (int)$lifetime;
}
function get_expires_in() {
return max(0, $this->issued + $this->lifetime - time());
}
// expires_in = property(get_expires_in)
};
class ConsumerAssociation extends Association {
// static
function from_expires_in( $expires_in, $server_url, $handle, $secret ) {
return new ConsumerAssociation( $server_url, $handle, $secret, time(), $expires_in );
}
function ConsumerAssociation($server_url, $handle, $secret, $issued, $lifetime) {
parent::Association( $handle, $secret, $issued, $lifetime );
$this->server_url = $server_url;
}
};
class ConsumerAssociationManager {
// Base class for type unification of Association Managers. Most
// implementations of this should extend the BaseAssociationManager
// class below.
function get_association($server_url, $assoc_handle) {
trigger_error( 'unimplemented', E_USER_WARNING );
}
function associate($server_url) {
trigger_error( 'unimplemented', E_USER_WARNING );
}
function invalidate($server_url, $assoc_handle) {
trigger_error( 'unimplemented', E_USER_WARNING );
}
}
class DumbAssociationManager extends ConsumerAssociationManager {
// Using this class will cause a consumer to behave in dumb mode.
function get_association($server_url, $assoc_handle) {
return null;
}
function associate($server_url) {
return null;
}
function invalidate($server_url, $assoc_handle) {
return;
}
};
class AbstractConsumerAssociationManager extends ConsumerAssociationManager {
// Abstract base class for association manager implementations.
function AbstractConsumerAssociationManager($associator) {
$this->associator = $associator;
}
function associate($server_url) {
// Returns assoc_handle associated with server_url
$expired = array();
$assoc = null;
$all = $this->get_all($server_url);
foreach( $all as $current) {
if( $current->get_expires_in() <= 0 ) {
$expired[] = $current;
}
else if( !$assoc || $current->get_expires_in() > $assoc->get_expires_in() ) {
$assoc = $current;
}
}
$new_assoc = null;
if( !$assoc ) {
$assoc = $new_assoc = $this->associator->associate($server_url);
}
// print "assoc.secret:"
// print to_b64(assoc.secret)
if( $new_assoc || $expired ) {
$this->update($new_assoc, $expired);
}
return $assoc->handle;
}
function get_association($server_url, $assoc_handle) {
// Find the secret matching server_url and assoc_handle
$associations = $this->get_all($server_url);
foreach( $associations as $assoc ) {
if( $assoc->handle == $assoc_handle ) {
return $assoc;
}
}
return null;
}
// Subclass need to implement the following methods:
function update($new_assoc, $expired) {
// new_assoc is either a new association object or None.
// Expired is a possibly empty list of expired associations.
// Subclasses should add new_assoc if it is not None and expire
// each association in the expired list.
trigger_error( 'unimplemented', E_USER_WARNING );
}
function get_all($server_url) {
// Subclasses should return a list of ConsumerAssociation
// objects whose server_url attribute is equal to server_url.
trigger_error( 'unimplemented', E_USER_WARNING );
}
function invalidate($server_url, $assoc_handle) {
// Subclasses should remove the ConsumerAssociation for the
// given server_url and assoc_handle from their stores.
trigger_error( 'unimplemented', E_USER_WARNING );
}
};
class DiffieHelmanAssociator {
function DiffieHelmanAssociator($http_client, $srand=null) {
$this->http_client = $http_client;
$this->srand = $srand;
}
function get_mod_gen() {
// -> (modulus, generator) for Diffie-Helman
// override this function to use different values
$dh = new DiffieHellman();
return array( $dh->DEFAULT_MOD, $dh->DEFAULT_GEN);
}
function getResult( $results, $key ) {
if( !isset( $results[$key] ) ) {
trigger_error( sprintf( 'protocol error : Association server response missing argument %s', $key ), E_USER_WARNING );
return null;
}
return $results[$key];
}
function associate($server_url) {
list( $p, $g ) = $this->get_mod_gen();
$dh = new DiffieHellman($p, $g, $this->srand);
$cpub = $dh->createKeyExchange();
$args = array(
'openid.mode' => 'associate',
'openid.assoc_type' =>'HMAC-SHA1',
'openid.session_type' =>'DH-SHA1',
'openid.dh_modulus' => oidUtil::to_b64(oidUtil::long2a($dh->p)),
'openid.dh_gen' => oidUtil::to_b64(oidUtil::long2a($dh->g)),
'openid.dh_consumer_public' => oidUtil::to_b64(oidUtil::long2a($cpub)),
);
$body = http_build_query($args);
list( $url, $data ) = $this->http_client->post($server_url, $body);
$results = oidUtil::parsekv($data);
$assoc_type = $this->getResult( $results, 'assoc_type');
if( $assoc_type != 'HMAC-SHA1' ) {
trigger_error( sprintf( 'runtime error : Unknown association type %s', $assoc_type ), E_USER_WARNING );
}
$assoc_handle = $this->getResult( $results, 'assoc_handle');
$expires_in = isset( $results['expires_in'] ) ? $results['expires_in'] : 0;
$session_type = isset( $results['session_type'] ) ? $results['session_type'] : 0;
if( !$session_type ) {
$secret = oidUtil::from_b64( $this->getResult( $results, 'mac_key'));
}
else {
if( $session_type != 'DH-SHA1' ) {
trigger_error( sprintf( 'runtime error : Unknown Session Type: %s', $session_type ), E_USER_WARNING );
}
$spub = oidUtil::a2long(oidUtil::from_b64( $this->getResult( $results, 'dh_server_public')));
$dh_shared = $dh->decryptKeyExchange($spub);
$enc_mac_key = $this->getResult( $results, 'enc_mac_key');
// print "enc_mac_key: " . $enc_mac_key;
$secret = oidUtil::strxor(oidUtil::from_b64($enc_mac_key), oidUtil::sha1(oidUtil::long2a($dh_shared)));
}
return ConsumerAssociation::from_expires_in( $expires_in, $server_url, $assoc_handle, $secret );
}
};
class ServerAssociationStore {
// This is the interface the OpenIDServer class expects its
// internal_store and external_store objects to support.
function get($assoc_type) {
// This method returns an association handle for the given
// association type. For the internal_store, implementations may
// return either a new association, or an existing one, as long
// as the association it returns won't expire too soon to be
// useable. For the external_store, implementations must return
// a new association each time this method is called.
trigger_error( 'unimplemented', E_USER_WARNING );
}
function lookup($assoc_handle, $assoc_type) {
// This method returns the stored association for a given
// handle and association type. If there is no such stored
// association, it should return None.
trigger_error( 'unimplemented', E_USER_WARNING );
}
function remove($handle) {
// If the server code notices that an association it retrieves
// has expired, it will call this method to let the store know it
// should remove the given association. In general, the
// implementation should take care of that without the server
// code getting involved. This exists primarily to deal with
// corner cases correctly.
trigger_error( 'unimplemented', E_USER_WARNING );
}
}
?>
--- NEW FILE: httpclient.php ---
<?php
/*****
PHP OpenID - OpenID consumer and server library
Copyright (C) 2005 Open Source Consulting, SA. and Dan Libby
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
Reciprocal linking. The author humbly requests that if you should use
PHP-OpenID on your website to provide an OpenID enabled service that you
place a link to the author's website ( http://videntity.org ) somewhere
that your users can discover it. You are however under no obligation to
do so.
More info about PHP OpenID:
openid at videntity.org
http://videntity.org/openid/
More info about OpenID:
http://www.openid.net
*****/
class HTTPClient {
// Object used by Consumer to send http messages
function get( $url) {
// -->(final_url, data)
// Fetch the content of url, following redirects, and return the
// final url and page data as a tuple. Return None on failure.
trigger_error( 'unimplemented', E_USER_WARNING );
}
function post( $url, $body) {
// -->(final_url, data)
// Post the body string argument to url.
// Reutrn the resulting final url and page data as a
// tuple. Return None on failure.
trigger_error( 'unimplemented', E_USER_WARNING );
}
// static
function getHTTPClient() {
// try to import find curl_init, which will let us use ParanoidHTTPClient
if( function_exists( 'curl_init' ) ) {
return new ParanoidHTTPClient();
}
return new SimpleHTTPClient();
}
};
class SimpleHTTPClient extends HTTPClient {
// var $user_agent = "Mozilla/4.0 (compatible; MSIE 5.5; Windows 98)";
var $user_agent = "PHP-OpenID SimpleHTTPClient";
var $ALLOWED_TIME = 20; // seconds
function _findRedirect( $headers) {
foreach( $headers as $line ) {
$loc = 'Location: ';
if( substr( $line, 0, strlen($loc) ) == $loc ) {
return trim( substr( $line, strlen($loc)-1 ) );
}
}
return null;
}
function get( $url) {
do {
$stop = time() + $this->ALLOWED_TIME;
$off = $this->ALLOWED_TIME;
$parts = parse_url( $url );
$scheme = isset( $parts['scheme'] ) ? $parts['scheme'] : null;
$host = isset( $parts['host'] ) ? $parts['host'] : null;
$port = isset( $parts['port'] ) ? $parts['port'] : ( $scheme == 'https' ? 443 : 80 );
$path = isset( $parts['path'] ) ? $parts['path'] : null;
$query = isset( $parts['query'] ) ? $parts['query'] : null;
$uri = $path . ( $query ? '?' . $query : '' );
// FIXME: perform some error checking on this URL.
// See request at http://lists.danga.com/pipermail/yadis/2005-September/001401.html
// Also, paranoidHttpClient should have a _checkURL method, so may
// want to use same mechanism here.
if( !in_array( $scheme, array( 'http', 'https' ) ) || !$host || !$port || !$uri ) {
return null;
}
if( $scheme == 'https' ) {
$host = 'ssl://' . $host;
}
$user_agent = $this->user_agent;
$headers =
"GET $path HTTP/1.0\r\n" .
"User-Agent: $user_agent\r\n" .
"Host: $host:$port\r\n" .
"Port: $port\r\n" .
"Cache-Control: no-cache\r\n" .
"\r\n";
$fp = @fsockopen($host, $port, $errno, $errstr);
if (!$fp) {
return false;
}
fputs($fp, $headers);
$data = '';
while (!feof($fp)) {
$data.= fgets($fp, 1024);
}
fclose($fp);
// Split response into header and body sections
list($response_headers, $response_body) = explode("\r\n\r\n", $data, 2);
$response_header_lines = explode("\r\n", $response_headers);
$redir = false;
if( strstr( $response_header_lines[0], '301') || strstr( $response_header_lines[0], '302') ) {
$url = $this->_findRedirect($response_header_lines);
$redir = true;
}
$off = $stop - time();
} while( $redir && $off > 0 );
return array( $url, $response_body );
}
// Simple function to post http data.
// notes:
// - handles both http and https
// - does not follow redirects
function post($url, $body) {
$content_length = $this->strlen_bytes($body);
$accept = '*/*';
$parts = parse_url( $url );
$scheme = isset( $parts['scheme'] ) ? $parts['scheme'] : null;
$host = isset( $parts['host'] ) ? $parts['host'] : null;
$port = isset( $parts['port'] ) ? $parts['port'] : ( $scheme == 'https' ? 443 : 80 );
if( !in_array( $scheme, array( 'http', 'https' ) ) || !$host || !$port ) {
return null;
}
if( $scheme == 'https' ) {
$host = 'ssl://' . $host;
}
$user_agent = $this->user_agent;
$headers =
"POST $url HTTP/1.0\r\n" .
"Accept: $accept\r\n" .
"Content-Type: application/x-www-form-urlencoded\r\n" .
"User-Agent: $user_agent\r\n" .
"Host: $host:$port\r\n" .
"Cache-Control: no-cache\r\n" .
"Content-Length: $content_length\r\n" .
"\r\n";
$fp = fsockopen($host, $port, $errno, $errstr);
if (!$fp) {
return false;
}
fputs($fp, $headers);
fputs($fp, $body);
$data = '';
while (!feof($fp)) {
$data.= fgets($fp, 1024);
}
fclose($fp);
// Split response into header and body sections
list($response_headers, $response_body) = explode("\r\n\r\n", $data, 2);
$response_header_lines = explode("\r\n", $response_headers);
return array( $url, $response_body );
}
// static
function strlen_bytes( $str ) {
// if mb_* are in effect, there is a good chance $this->strlen_bytes is shadowed to return
// mb_$this->strlen_bytes, which can give incorrect byte count. so we force mb_$this->strlen_bytes to give us latin1 count.
return function_exists('mb_strlen') ? mb_strlen($str, 'latin1') : strlen($str);
}
};
class ParanoidHTTPClient extends HTTPClient {
// A paranoid HTTPClient that uses curl for fecthing.
// See http://php.net/curl
var $ALLOWED_TIME = 20; // seconds
var $headers;
function ParanoidHTTPClient() {
}
function _findRedirect( $headers) {
foreach( $headers as $line ) {
$loc = 'Location: ';
if( substr( $line, strlen($loc) ) == $loc ) {
return trim( substr( $line, strlen($loc)-1 ) );
}
}
return null;
}
function _checkURL( $url) {
// TODO: make sure url is welformed and route-able
// ie. the Paranoid part.
return true;
}
function get( $url) {
$retval = null;
$c = curl_init( $url );
if( $c ) {
// CURLOPT_NOSIGNAL was added in php 5.
if( defined( 'CURLOPT_NOSIGNAL' ) ) {
curl_setopt( $c, CURLOPT_NOSIGNAL, true);
}
curl_setopt( $c, CURLOPT_RETURNTRANSFER, true);
curl_setopt( $c, CURLOPT_HEADER, true);
$stop = time() + $this->ALLOWED_TIME;
$off = $this->ALLOWED_TIME;
while( $off > 0 ) {
if( !$this->_checkURL($url) ) {
break;
}
curl_setopt( $c, CURLOPT_URL, $url);
curl_setopt( $c, CURLOPT_TIMEOUT, $off );
$response_full = curl_exec( $c );
if( !$response_full ) {
break;
}
// Split response into header and body sections
list($response_headers, $response_body) = explode("\r\n\r\n", $response_full, 2);
$response_header_lines = explode("\r\n", $response_headers);
$code = curl_getinfo( $c, CURLINFO_HTTP_CODE );
if( in_array( $code, array(301, 302) ) ) {
$url = $this->_findRedirect($response_header_lines);
}
else {
$retval = array( $url, $response_body );
break;
}
$off = $stop - time();
}
curl_close( $c );
}
return $retval;
}
function post( $url, $body) {
$retval = null;
if( !$this->_checkURL($url) ) {
return null;
}
$c = curl_init( $url );
if( $c ) {
// CURLOPT_NOSIGNAL was added in php 5.
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->ALLOWED_TIME);
curl_setopt( $c, CURLOPT_URL, $url);
curl_setopt( $c, CURLOPT_RETURNTRANSFER, true);
$data = curl_exec( $c );
curl_close( $c );
if( $data ) {
$retval = array( $url, $data );
}
}
return $retval;
}
// static
function startsWith( $str, $sub ) {
return ( substr( $str, 0, strlen( $sub ) ) == $sub );
}
};
function _oid_httpclient_test() {
$url_get = 'http://www.google.com';
$c1 = new SimpleHttpClient();
$response = $c1->get( $url_get );
if( $response ) {
list( $url, $data ) = $response;
echo $data ;
}
else {
echo "test 1 failed";
}
}
if( strstr( $_SERVER['REQUEST_URI'], 'httpclient.php' ) ) {
_oid_httpclient_test();
}
?>
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