gnu-social/lib/apioauthstore.php

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<?php
/*
* StatusNet - the distributed open-source microblogging tool
* Copyright (C) 2008, 2009, StatusNet, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
if (!defined('STATUSNET') && !defined('LACONICA')) { exit(1); }
require_once INSTALLDIR . '/lib/oauthstore.php';
// @todo FIXME: Class documentation missing.
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class ApiStatusNetOAuthDataStore extends StatusNetOAuthDataStore
{
function lookup_consumer($consumerKey)
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{
$con = Consumer::staticGet('consumer_key', $consumerKey);
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if (!$con) {
// Create an anon consumer and anon application if one
// doesn't exist already
if ($consumerKey == 'anonymous') {
common_debug("API OAuth - creating anonymous consumer");
$con = new Consumer();
$con->consumer_key = $consumerKey;
$con->consumer_secret = $consumerKey;
$con->created = common_sql_now();
$result = $con->insert();
if (!$result) {
// TRANS: Server error displayed when trying to create an anynymous OAuth consumer.
$this->serverError(_('Could not create anonymous consumer.'));
}
$app = Oauth_application::getByConsumerKey('anonymous');
if (!$app) {
common_debug("API OAuth - creating anonymous application");
$app = new OAuth_application();
$app->owner = 1; // XXX: What to do here?
$app->consumer_key = $con->consumer_key;
$app->name = 'anonymous';
$app->icon = 'default-avatar-stream.png'; // XXX: Fix this!
$app->description = "An anonymous application";
// XXX: allow the user to set the access type when
// authorizing? Currently we default to r+w for anonymous
// OAuth client applications
$app->access_type = 3; // read + write
$app->type = 2; // desktop
$app->created = common_sql_now();
$id = $app->insert();
if (!$id) {
// TRANS: Server error displayed when trying to create an anynymous OAuth application.
$this->serverError(_("Could not create anonymous OAuth application."));
}
}
} else {
return null;
}
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}
return new OAuthConsumer(
$con->consumer_key,
$con->consumer_secret
);
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}
function getAppByRequestToken($token_key)
{
// Look up the full req token
$req_token = $this->lookup_token(
null,
'request',
$token_key
);
if (empty($req_token)) {
common_debug("Couldn't get request token from oauth datastore");
return null;
}
// Look up the full Token
$token = new Token();
$token->tok = $req_token->key;
$result = $token->find(true);
if (empty($result)) {
common_debug('Couldn\'t find req token in the token table.');
return null;
}
// Look up the app
$app = new Oauth_application();
$app->consumer_key = $token->consumer_key;
$result = $app->find(true);
if (!empty($result)) {
return $app;
} else {
common_debug("Couldn't find the app!");
return null;
}
}
function new_access_token($token, $consumer, $verifier)
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{
common_debug(
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sprintf(
"New access token from request token %s, consumer %s and verifier %s ",
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$token,
$consumer,
$verifier
),
__FILE__
);
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$rt = new Token();
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$rt->consumer_key = $consumer->key;
$rt->tok = $token->key;
$rt->type = 0; // request
$app = Oauth_application::getByConsumerKey($consumer->key);
assert(!empty($app));
if ($rt->find(true) && $rt->state == 1 && $rt->verifier == $verifier) { // authorized
common_debug('Request token found.', __FILE__);
// find the app and profile associated with this token
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$tokenAssoc = Oauth_token_association::staticGet('token', $rt->tok);
if (!$tokenAssoc) {
throw new Exception(
// TRANS: Exception thrown when no token association could be found.
_('Could not find a profile and application associated with the request token.')
);
}
// Check to see if we have previously issued an access token for
// this application and profile; if so we can just return the
// existing access token. That seems to be the best practice. It
// makes it so users only have to authorize the app once per
// machine.
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$appUser = new Oauth_application_user();
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$appUser->application_id = $app->id;
$appUser->profile_id = $tokenAssoc->profile_id;
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$result = $appUser->find(true);
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if (!empty($result)) {
common_log(LOG_INFO,
sprintf(
"Existing access token found for application %s, profile %s.",
$app->id,
$tokenAssoc->profile_id
)
);
$at = null;
// Special case: we used to store request tokens in the
// Oauth_application_user record, and the access_type would
// always be 0 (no access) as a failsafe until an access
// token was issued and replaced the request token. There could
// be a few old Oauth_application_user records storing request
// tokens still around, and we don't want to accidentally
// return a useless request token instead of a new access
// token. So if we find one, we generate a new access token
// and update the existing Oauth_application_user record before
// returning the new access token. This should be rare.
if ($appUser->access_type == 0) {
$at = $this->generateNewAccessToken($consumer, $rt, $verifier);
$this->updateAppUser($appUser, $app, $at);
} else {
$at = new Token();
// fetch the full access token
$at->consumer_key = $consumer->key;
$at->tok = $appUser->token;
$result = $at->find(true);
if (!$result) {
throw new Exception(
// TRANS: Exception thrown when no access token can be issued.
_('Could not issue access token.')
);
}
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}
// Yay, we can re-issue the access token
return new OAuthToken($at->tok, $at->secret);
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} else {
common_log(LOG_INFO,
sprintf(
"Creating new access token for application %s, profile %s.",
$app->id,
$tokenAssoc->profile_id
)
);
$at = $this->generateNewAccessToken($consumer, $rt, $verifier);
$this->newAppUser($tokenAssoc, $app, $at);
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// Okay, good
return new OAuthToken($at->tok, $at->secret);
}
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} else {
// the token was not authorized or not verfied
common_log(
LOG_INFO,
sprintf(
"API OAuth - Attempt to exchange unauthorized or unverified request token %s for an access token.",
$rt->tok
)
);
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return null;
}
}
/*
* Generate a new access token and save it to the database
*
* @param Consumer $consumer the OAuth consumer
* @param Token $rt the authorized request token
* @param string $verifier the OAuth 1.0a verifier
*
* @access private
*
* @return Token $at the new access token
*/
private function generateNewAccessToken($consumer, $rt, $verifier)
{
$at = new Token();
$at->consumer_key = $consumer->key;
$at->tok = common_good_rand(16);
$at->secret = common_good_rand(16);
$at->type = 1; // access
$at->verifier = $verifier;
$at->verified_callback = $rt->verified_callback; // 1.0a
$at->created = common_sql_now();
if (!$at->insert()) {
$e = $at->_lastError;
common_debug('access token "' . $at->tok . '" not inserted: "' . $e->message . '"', __FILE__);
return null;
} else {
common_debug('access token "' . $at->tok . '" inserted', __FILE__);
// burn the old one
$orig_rt = clone($rt);
$rt->state = 2; // used
if (!$rt->update($orig_rt)) {
return null;
}
common_debug('request token "' . $rt->tok . '" updated', __FILE__);
}
return $at;
}
/*
* Add a new app user (Oauth_application_user) record
*
* @param Oauth_token_association $tokenAssoc token-to-app association
* @param Oauth_application $app the OAuth client app
* @param Token $at the access token
*
* @access private
*
* @return void
*/
private function newAppUser($tokenAssoc, $app, $at)
{
$appUser = new Oauth_application_user();
$appUser->profile_id = $tokenAssoc->profile_id;
$appUser->application_id = $app->id;
$appUser->access_type = $app->access_type;
$appUser->token = $at->tok;
$appUser->created = common_sql_now();
$result = $appUser->insert();
if (!$result) {
common_log_db_error($appUser, 'INSERT', __FILE__);
throw new Exception(
// TRANS: Exception thrown when a database error occurs.
_('Database error inserting OAuth application user.')
);
}
}
/*
* Update an existing app user (Oauth_application_user) record
*
* @param Oauth_application_user $appUser existing app user rec
* @param Oauth_application $app the OAuth client app
* @param Token $at the access token
*
* @access private
*
* @return void
*/
private function updateAppUser($appUser, $app, $at)
{
$original = clone($appUser);
$appUser->access_type = $app->access_type;
$appUser->token = $at->tok;
$result = $appUser->update($original);
if (!$result) {
common_log_db_error($appUser, 'UPDATE', __FILE__);
throw new Exception(
// TRANS: Exception thrown when a database error occurs.
_('Database error updating OAuth application user.')
);
}
}
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/**
* Revoke specified access token
*
* Revokes the token specified by $token_key.
* Throws exceptions in case of error.
*
* @param string $token_key the token to be revoked
* @param int $type type of token (0 = req, 1 = access)
*
* @access public
*
* @return void
*/
public function revoke_token($token_key, $type = 0) {
$rt = new Token();
$rt->tok = $token_key;
$rt->type = $type;
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$rt->state = 0;
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if (!$rt->find(true)) {
// TRANS: Exception thrown when an attempt is made to revoke an unknown token.
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throw new Exception(_('Tried to revoke unknown token.'));
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}
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if (!$rt->delete()) {
// TRANS: Exception thrown when an attempt is made to remove a revoked token.
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throw new Exception(_('Failed to delete revoked token.'));
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}
}
/*
* Create a new request token. Overrided to support OAuth 1.0a callback
*
* @param OAuthConsumer $consumer the OAuth Consumer for this token
* @param string $callback the verified OAuth callback URL
*
* @return OAuthToken $token a new unauthorized OAuth request token
*/
function new_request_token($consumer, $callback)
{
$t = new Token();
$t->consumer_key = $consumer->key;
$t->tok = common_good_rand(16);
$t->secret = common_good_rand(16);
$t->type = 0; // request
$t->state = 0; // unauthorized
$t->verified_callback = $callback;
if ($callback === 'oob') {
// six digit pin
$t->verifier = mt_rand(0, 9999999);
} else {
$t->verifier = common_good_rand(8);
}
$t->created = DB_DataObject_Cast::dateTime();
if (!$t->insert()) {
return null;
} else {
return new OAuthToken($t->tok, $t->secret);
}
}
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}