--- /dev/null
+<?php
+// vim: foldmethod=marker
+
+/* Generic exception class
+ */
+class OAuthException extends Exception {/*{{{*/
+ // pass
+}/*}}}*/
+
+class OAuthConsumer {/*{{{*/
+ public $key;
+ public $secret;
+
+ public function __construct($key, $secret, $callback_url=NULL) {/*{{{*/
+ $this->key = $key;
+ $this->secret = $secret;
+ $this->callback_url = $callback_url;
+ }/*}}}*/
+}/*}}}*/
+
+class OAuthToken {/*{{{*/
+ // access tokens and request tokens
+ public $key;
+ public $secret;
+
+ /**
+ * key = the token
+ * secret = the token secret
+ */
+ function __construct($key, $secret) {/*{{{*/
+ $this->key = $key;
+ $this->secret = $secret;
+ }/*}}}*/
+
+ /**
+ * generates the basic string serialization of a token that a server
+ * would respond to request_token and access_token calls with
+ */
+ function to_string() {/*{{{*/
+ return "oauth_token=" . OAuthUtil::urlencodeRFC3986($this->key) .
+ "&oauth_token_secret=" . OAuthUtil::urlencodeRFC3986($this->secret);
+ }/*}}}*/
+
+ function __toString() {/*{{{*/
+ return $this->to_string();
+ }/*}}}*/
+}/*}}}*/
+
+class OAuthSignatureMethod {/*{{{*/
+ public function check_signature(&$request, $consumer, $token, $signature) {
+ $built = $this->build_signature($request, $consumer, $token);
+ return $built == $signature;
+ }
+}/*}}}*/
+
+class OAuthSignatureMethod_HMAC_SHA1 extends OAuthSignatureMethod {/*{{{*/
+ function get_name() {/*{{{*/
+ return "HMAC-SHA1";
+ }/*}}}*/
+
+ public function build_signature($request, $consumer, $token, $privKey=NULL) {/*{{{*/
+ $base_string = $request->get_signature_base_string();
+ $request->base_string = $base_string;
+
+ $key_parts = array(
+ $consumer->secret,
+ ($token) ? $token->secret : ""
+ );
+
+ $key_parts = array_map(array('OAuthUtil','urlencodeRFC3986'), $key_parts);
+ $key = implode('&', $key_parts);
+
+ return base64_encode( hash_hmac('sha1', $base_string, $key, true));
+ }/*}}}*/
+}/*}}}*/
+
+class OAuthSignatureMethod_RSA_SHA1 extends OAuthSignatureMethod {/*{{{*/
+ public function get_name() {/*{{{*/
+ return "RSA-SHA1";
+ }/*}}}*/
+
+ protected function fetch_public_cert(&$request) {/*{{{*/
+ // not implemented yet, ideas are:
+ // (1) do a lookup in a table of trusted certs keyed off of consumer
+ // (2) fetch via http using a url provided by the requester
+ // (3) some sort of specific discovery code based on request
+ //
+ // either way should return a string representation of the certificate
+ throw Exception("fetch_public_cert not implemented");
+ }/*}}}*/
+
+ protected function fetch_private_cert($privKey) {//&$request) {/*{{{*/
+ // not implemented yet, ideas are:
+ // (1) do a lookup in a table of trusted certs keyed off of consumer
+ //
+ // either way should return a string representation of the certificate
+ throw Exception("fetch_private_cert not implemented");
+ }/*}}}*/
+
+ public function build_signature(&$request, $consumer, $token, $privKey) {/*{{{*/
+ $base_string = $request->get_signature_base_string();
+
+ // Fetch the private key cert based on the request
+ //$cert = $this->fetch_private_cert($consumer->privKey);
+
+ //Pull the private key ID from the certificate
+ //$privatekeyid = openssl_get_privatekey($cert);
+
+ // hacked in
+ if ($privKey == '') {
+ $fp = fopen($GLOBALS['PRIV_KEY_FILE'], "r");
+ $privKey = fread($fp, 8192);
+ fclose($fp);
+ }
+ $privatekeyid = openssl_get_privatekey($privKey);
+
+ //Check the computer signature against the one passed in the query
+ $ok = openssl_sign($base_string, $signature, $privatekeyid);
+
+ //Release the key resource
+ openssl_free_key($privatekeyid);
+
+ return base64_encode($signature);
+ } /*}}}*/
+
+ public function check_signature(&$request, $consumer, $token, $signature) {/*{{{*/
+ $decoded_sig = base64_decode($signature);
+
+ $base_string = $request->get_signature_base_string();
+
+ // Fetch the public key cert based on the request
+ $cert = $this->fetch_public_cert($request);
+
+ //Pull the public key ID from the certificate
+ $publickeyid = openssl_get_publickey($cert);
+
+ //Check the computer signature against the one passed in the query
+ $ok = openssl_verify($base_string, $decoded_sig, $publickeyid);
+
+ //Release the key resource
+ openssl_free_key($publickeyid);
+
+ return $ok == 1;
+ } /*}}}*/
+}/*}}}*/
+
+class OAuthRequest {/*{{{*/
+ private $parameters;
+ private $http_method;
+ private $http_url;
+ // for debug purposes
+ public $base_string;
+ public static $version = '1.0';
+
+ function __construct($http_method, $http_url, $parameters=NULL) {/*{{{*/
+ @$parameters or $parameters = array();
+ $this->parameters = $parameters;
+ $this->http_method = $http_method;
+ $this->http_url = $http_url;
+ }/*}}}*/
+
+
+ /**
+ * attempt to build up a request from what was passed to the server
+ */
+ public static function from_request($http_method=NULL, $http_url=NULL, $parameters=NULL) {/*{{{*/
+ $scheme = (!isset($_SERVER['HTTPS']) || $_SERVER['HTTPS'] != "on") ? 'http' : 'https';
+ @$http_url or $http_url = $scheme . '://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];
+ @$http_method or $http_method = $_SERVER['REQUEST_METHOD'];
+
+ $request_headers = OAuthRequest::get_headers();
+
+ // let the library user override things however they'd like, if they know
+ // which parameters to use then go for it, for example XMLRPC might want to
+ // do this
+ if ($parameters) {
+ $req = new OAuthRequest($http_method, $http_url, $parameters);
+ }
+ // next check for the auth header, we need to do some extra stuff
+ // if that is the case, namely suck in the parameters from GET or POST
+ // so that we can include them in the signature
+ else if (@substr($request_headers['Authorization'], 0, 5) == "OAuth") {
+ $header_parameters = OAuthRequest::split_header($request_headers['Authorization']);
+ if ($http_method == "GET") {
+ $req_parameters = $_GET;
+ }
+ else if ($http_method = "POST") {
+ $req_parameters = $_POST;
+ }
+ $parameters = array_merge($header_parameters, $req_parameters);
+ $req = new OAuthRequest($http_method, $http_url, $parameters);
+ }
+ else if ($http_method == "GET") {
+ $req = new OAuthRequest($http_method, $http_url, $_GET);
+ }
+ else if ($http_method == "POST") {
+ $req = new OAuthRequest($http_method, $http_url, $_POST);
+ }
+ return $req;
+ }/*}}}*/
+
+ /**
+ * pretty much a helper function to set up the request
+ */
+ public static function from_consumer_and_token($consumer, $token, $http_method, $http_url, $parameters=NULL) {/*{{{*/
+ @$parameters or $parameters = array();
+ $defaults = array("oauth_version" => OAuthRequest::$version,
+ "oauth_nonce" => OAuthRequest::generate_nonce(),
+ "oauth_timestamp" => OAuthRequest::generate_timestamp(),
+ "oauth_consumer_key" => $consumer->key);
+ $parameters = array_merge($defaults, $parameters);
+
+ if ($token) {
+ $parameters['oauth_token'] = $token->key;
+ }
+
+ // oauth v1.0a
+ /*if (isset($_REQUEST['oauth_verifier'])) {
+ $parameters['oauth_verifier'] = $_REQUEST['oauth_verifier'];
+ }*/
+
+
+ return new OAuthRequest($http_method, $http_url, $parameters);
+ }/*}}}*/
+
+ public function set_parameter($name, $value) {/*{{{*/
+ $this->parameters[$name] = $value;
+ }/*}}}*/
+
+ public function get_parameter($name) {/*{{{*/
+ return $this->parameters[$name];
+ }/*}}}*/
+
+ public function get_parameters() {/*{{{*/
+ return $this->parameters;
+ }/*}}}*/
+
+ /**
+ * Returns the normalized parameters of the request
+ *
+ * This will be all (except oauth_signature) parameters,
+ * sorted first by key, and if duplicate keys, then by
+ * value.
+ *
+ * The returned string will be all the key=value pairs
+ * concated by &.
+ *
+ * @return string
+ */
+ public function get_signable_parameters() {/*{{{*/
+ // Grab all parameters
+ $params = $this->parameters;
+
+ // Remove oauth_signature if present
+ if (isset($params['oauth_signature'])) {
+ unset($params['oauth_signature']);
+ }
+
+ // Urlencode both keys and values
+ $keys = array_map(array('OAuthUtil', 'urlencodeRFC3986'), array_keys($params));
+ $values = array_map(array('OAuthUtil', 'urlencodeRFC3986'), array_values($params));
+ $params = array_combine($keys, $values);
+
+ // Sort by keys (natsort)
+ uksort($params, 'strnatcmp');
+
+if(isset($params['title']) && isset($params['title-exact'])) {
+ $temp = $params['title-exact'];
+ $title = $params['title'];
+
+ unset($params['title']);
+ unset($params['title-exact']);
+
+ $params['title-exact'] = $temp;
+ $params['title'] = $title;
+}
+
+ // Generate key=value pairs
+ $pairs = array();
+ foreach ($params as $key=>$value ) {
+ if (is_array($value)) {
+ // If the value is an array, it's because there are multiple
+ // with the same key, sort them, then add all the pairs
+ natsort($value);
+ foreach ($value as $v2) {
+ $pairs[] = $key . '=' . $v2;
+ }
+ } else {
+ $pairs[] = $key . '=' . $value;
+ }
+ }
+
+ // Return the pairs, concated with &
+ return implode('&', $pairs);
+ }/*}}}*/
+
+ /**
+ * Returns the base string of this request
+ *
+ * The base string defined as the method, the url
+ * and the parameters (normalized), each urlencoded
+ * and the concated with &.
+ */
+ public function get_signature_base_string() {/*{{{*/
+ $parts = array(
+ $this->get_normalized_http_method(),
+ $this->get_normalized_http_url(),
+ $this->get_signable_parameters()
+ );
+
+ $parts = array_map(array('OAuthUtil', 'urlencodeRFC3986'), $parts);
+
+ return implode('&', $parts);
+ }/*}}}*/
+
+ /**
+ * just uppercases the http method
+ */
+ public function get_normalized_http_method() {/*{{{*/
+ return strtoupper($this->http_method);
+ }/*}}}*/
+
+/**
+ * parses the url and rebuilds it to be
+ * scheme://host/path
+ */
+ public function get_normalized_http_url() {
+ $parts = parse_url($this->http_url);
+
+ $scheme = (isset($parts['scheme'])) ? $parts['scheme'] : 'http';
+ $port = (isset($parts['port'])) ? $parts['port'] : (($scheme == 'https') ? '443' : '80');
+ $host = (isset($parts['host'])) ? strtolower($parts['host']) : '';
+ $path = (isset($parts['path'])) ? $parts['path'] : '';
+
+ if (($scheme == 'https' && $port != '443')
+ || ($scheme == 'http' && $port != '80')) {
+ $host = "$host:$port";
+ }
+ return "$scheme://$host$path";
+ }
+
+ /**
+ * builds a url usable for a GET request
+ */
+ public function to_url() {/*{{{*/
+ $out = $this->get_normalized_http_url() . "?";
+ $out .= $this->to_postdata();
+ return $out;
+ }/*}}}*/
+
+ /**
+ * builds the data one would send in a POST request
+ */
+ public function to_postdata() {/*{{{*/
+ $total = array();
+ foreach ($this->parameters as $k => $v) {
+ $total[] = OAuthUtil::urlencodeRFC3986($k) . "=" . OAuthUtil::urlencodeRFC3986($v);
+ }
+ $out = implode("&", $total);
+ return $out;
+ }/*}}}*/
+
+ /**
+ * builds the Authorization: header
+ */
+ public function to_header() {/*{{{*/
+ $out ='Authorization: OAuth ';
+ $total = array();
+
+ /*
+ $sig = $this->parameters['oauth_signature'];
+ unset($this->parameters['oauth_signature']);
+ uksort($this->parameters, 'strnatcmp');
+ $this->parameters['oauth_signature'] = $sig;
+ */
+
+ foreach ($this->parameters as $k => $v) {
+ if (substr($k, 0, 5) != "oauth") continue;
+ $out .= OAuthUtil::urlencodeRFC3986($k) . '="' . OAuthUtil::urlencodeRFC3986($v) . '", ';
+ }
+ $out = substr_replace($out, '', strlen($out) - 2);
+
+ return $out;
+ }/*}}}*/
+
+ public function __toString() {/*{{{*/
+ return $this->to_url();
+ }/*}}}*/
+
+
+ public function sign_request($signature_method, $consumer, $token, $privKey=NULL) {/*{{{*/
+ $this->set_parameter("oauth_signature_method", $signature_method->get_name());
+ $signature = $this->build_signature($signature_method, $consumer, $token, $privKey);
+ $this->set_parameter("oauth_signature", $signature);
+ }/*}}}*/
+
+ public function build_signature($signature_method, $consumer, $token, $privKey=NULL) {/*{{{*/
+ $signature = $signature_method->build_signature($this, $consumer, $token, $privKey);
+ return $signature;
+ }/*}}}*/
+
+ /**
+ * util function: current timestamp
+ */
+ private static function generate_timestamp() {/*{{{*/
+ return time();
+ }/*}}}*/
+
+ /**
+ * util function: current nonce
+ */
+ private static function generate_nonce() {/*{{{*/
+ $mt = microtime();
+ $rand = mt_rand();
+
+ return md5($mt . $rand); // md5s look nicer than numbers
+ }/*}}}*/
+
+ /**
+ * util function for turning the Authorization: header into
+ * parameters, has to do some unescaping
+ */
+ private static function split_header($header) {/*{{{*/
+ // this should be a regex
+ // error cases: commas in parameter values
+ $parts = explode(",", $header);
+ $out = array();
+ foreach ($parts as $param) {
+ $param = ltrim($param);
+ // skip the "realm" param, nobody ever uses it anyway
+ if (substr($param, 0, 5) != "oauth") continue;
+
+ $param_parts = explode("=", $param);
+
+ // rawurldecode() used because urldecode() will turn a "+" in the
+ // value into a space
+ $out[$param_parts[0]] = rawurldecode(substr($param_parts[1], 1, -1));
+ }
+ return $out;
+ }/*}}}*/
+
+ /**
+ * helper to try to sort out headers for people who aren't running apache
+ */
+ private static function get_headers() {/*{{{*/
+ if (function_exists('apache_request_headers')) {
+ // we need this to get the actual Authorization: header
+ // because apache tends to tell us it doesn't exist
+ return apache_request_headers();
+ }
+ // otherwise we don't have apache and are just going to have to hope
+ // that $_SERVER actually contains what we need
+ $out = array();
+ foreach ($_SERVER as $key => $value) {
+ if (substr($key, 0, 5) == "HTTP_") {
+ // this is chaos, basically it is just there to capitalize the first
+ // letter of every word that is not an initial HTTP and strip HTTP
+ // code from przemek
+ $key = str_replace(" ", "-", ucwords(strtolower(str_replace("_", " ", substr($key, 5)))));
+ $out[$key] = $value;
+ }
+ }
+ return $out;
+ }/*}}}*/
+}/*}}}*/
+
+class OAuthServer {/*{{{*/
+ protected $timestamp_threshold = 300; // in seconds, five minutes
+ protected $version = 1.0; // hi blaine
+ protected $signature_methods = array();
+
+ protected $data_store;
+
+ function __construct($data_store) {/*{{{*/
+ $this->data_store = $data_store;
+ }/*}}}*/
+
+ public function add_signature_method($signature_method) {/*{{{*/
+ $this->signature_methods[$signature_method->get_name()] =
+ $signature_method;
+ }/*}}}*/
+
+ // high level functions
+
+ /**
+ * process a request_token request
+ * returns the request token on success
+ */
+ public function fetch_request_token(&$request) {/*{{{*/
+ $this->get_version($request);
+
+ $consumer = $this->get_consumer($request);
+
+ // no token required for the initial token request
+ $token = NULL;
+
+ $this->check_signature($request, $consumer, $token);
+
+ $new_token = $this->data_store->new_request_token($consumer);
+
+ return $new_token;
+ }/*}}}*/
+
+ /**
+ * process an access_token request
+ * returns the access token on success
+ */
+ public function fetch_access_token(&$request) {/*{{{*/
+ $this->get_version($request);
+
+ $consumer = $this->get_consumer($request);
+
+ // requires authorized request token
+ $token = $this->get_token($request, $consumer, "request");
+
+ $this->check_signature($request, $consumer, $token);
+
+ $new_token = $this->data_store->new_access_token($token, $consumer);
+
+ return $new_token;
+ }/*}}}*/
+
+ /**
+ * verify an api call, checks all the parameters
+ */
+ public function verify_request(&$request) {/*{{{*/
+ $this->get_version($request);
+ $consumer = $this->get_consumer($request);
+ $token = $this->get_token($request, $consumer, "access");
+ $this->check_signature($request, $consumer, $token);
+ return array($consumer, $token);
+ }/*}}}*/
+
+ // Internals from here
+ /**
+ * version 1
+ */
+ private function get_version(&$request) {/*{{{*/
+ $version = $request->get_parameter("oauth_version");
+ if (!$version) {
+ $version = 1.0;
+ }
+ if ($version && $version != $this->version) {
+ throw new OAuthException("OAuth version '$version' not supported");
+ }
+ return $version;
+ }/*}}}*/
+
+ /**
+ * figure out the signature with some defaults
+ */
+ private function get_signature_method(&$request) {/*{{{*/
+ $signature_method =
+ @$request->get_parameter("oauth_signature_method");
+ if (!$signature_method) {
+ $signature_method = "PLAINTEXT";
+ }
+ if (!in_array($signature_method,
+ array_keys($this->signature_methods))) {
+ throw new OAuthException(
+ "Signature method '$signature_method' not supported try one of the following: " . implode(", ", array_keys($this->signature_methods))
+ );
+ }
+ return $this->signature_methods[$signature_method];
+ }/*}}}*/
+
+ /**
+ * try to find the consumer for the provided request's consumer key
+ */
+ private function get_consumer(&$request) {/*{{{*/
+ $consumer_key = @$request->get_parameter("oauth_consumer_key");
+ if (!$consumer_key) {
+ throw new OAuthException("Invalid consumer key");
+ }
+
+ $consumer = $this->data_store->lookup_consumer($consumer_key);
+ if (!$consumer) {
+ throw new OAuthException("Invalid consumer");
+ }
+
+ return $consumer;
+ }/*}}}*/
+
+ /**
+ * try to find the token for the provided request's token key
+ */
+ private function get_token(&$request, $consumer, $token_type="access") {/*{{{*/
+ $token_field = @$request->get_parameter('oauth_token');
+ $token = $this->data_store->lookup_token(
+ $consumer, $token_type, $token_field
+ );
+ if (!$token) {
+ throw new OAuthException("Invalid $token_type token: $token_field");
+ }
+ return $token;
+ }/*}}}*/
+
+ /**
+ * all-in-one function to check the signature on a request
+ * should guess the signature method appropriately
+ */
+ private function check_signature(&$request, $consumer, $token) {/*{{{*/
+ // this should probably be in a different method
+ $timestamp = @$request->get_parameter('oauth_timestamp');
+ $nonce = @$request->get_parameter('oauth_nonce');
+
+ $this->check_timestamp($timestamp);
+ $this->check_nonce($consumer, $token, $nonce, $timestamp);
+
+ $signature_method = $this->get_signature_method($request);
+
+ $signature = $request->get_parameter('oauth_signature');
+ $valid_sig = $signature_method->check_signature(
+ $request,
+ $consumer,
+ $token,
+ $signature
+ );
+
+ if (!$valid_sig) {
+ throw new OAuthException("Invalid signature");
+ }
+ }/*}}}*/
+
+ /**
+ * check that the timestamp is new enough
+ */
+ private function check_timestamp($timestamp) {/*{{{*/
+ // verify that timestamp is recentish
+ $now = time();
+ if ($now - $timestamp > $this->timestamp_threshold) {
+ throw new OAuthException("Expired timestamp, yours $timestamp, ours $now");
+ }
+ }/*}}}*/
+
+ /**
+ * check that the nonce is not repeated
+ */
+ private function check_nonce($consumer, $token, $nonce, $timestamp) {/*{{{*/
+ // verify that the nonce is uniqueish
+ $found = $this->data_store->lookup_nonce($consumer, $token, $nonce, $timestamp);
+ if ($found) {
+ throw new OAuthException("Nonce already used: $nonce");
+ }
+ }/*}}}*/
+
+
+
+}/*}}}*/
+
+class OAuthDataStore {/*{{{*/
+ function lookup_consumer($consumer_key) {/*{{{*/
+ // implement me
+ }/*}}}*/
+
+ function lookup_token($consumer, $token_type, $token) {/*{{{*/
+ // implement me
+ }/*}}}*/
+
+ function lookup_nonce($consumer, $token, $nonce, $timestamp) {/*{{{*/
+ // implement me
+ }/*}}}*/
+
+ function fetch_request_token($consumer) {/*{{{*/
+ // return a new token attached to this consumer
+ }/*}}}*/
+
+ function fetch_access_token($token, $consumer) {/*{{{*/
+ // return a new access token attached to this consumer
+ // for the user associated with this token if the request token
+ // is authorized
+ // should also invalidate the request token
+ }/*}}}*/
+
+}/*}}}*/
+
+
+/* A very naive dbm-based oauth storage
+ */
+class SimpleOAuthDataStore extends OAuthDataStore {/*{{{*/
+ private $dbh;
+
+ function __construct($path = "oauth.gdbm") {/*{{{*/
+ $this->dbh = dba_popen($path, 'c', 'gdbm');
+ }/*}}}*/
+
+ function __destruct() {/*{{{*/
+ dba_close($this->dbh);
+ }/*}}}*/
+
+ function lookup_consumer($consumer_key) {/*{{{*/
+ $rv = dba_fetch("consumer_$consumer_key", $this->dbh);
+ if ($rv === FALSE) {
+ return NULL;
+ }
+ $obj = unserialize($rv);
+ if (!($obj instanceof OAuthConsumer)) {
+ return NULL;
+ }
+ return $obj;
+ }/*}}}*/
+
+ function lookup_token($consumer, $token_type, $token) {/*{{{*/
+ $rv = dba_fetch("${token_type}_${token}", $this->dbh);
+ if ($rv === FALSE) {
+ return NULL;
+ }
+ $obj = unserialize($rv);
+ if (!($obj instanceof OAuthToken)) {
+ return NULL;
+ }
+ return $obj;
+ }/*}}}*/
+
+ function lookup_nonce($consumer, $token, $nonce, $timestamp) {/*{{{*/
+ return dba_exists("nonce_$nonce", $this->dbh);
+ }/*}}}*/
+
+ function new_token($consumer, $type="request") {/*{{{*/
+ $key = md5(time());
+ $secret = time() + time();
+ $token = new OAuthToken($key, md5(md5($secret)));
+ if (!dba_insert("${type}_$key", serialize($token), $this->dbh)) {
+ throw new OAuthException("doooom!");
+ }
+ return $token;
+ }/*}}}*/
+
+ function new_request_token($consumer) {/*{{{*/
+ return $this->new_token($consumer, "request");
+ }/*}}}*/
+
+ function new_access_token($token, $consumer) {/*{{{*/
+
+ $token = $this->new_token($consumer, 'access');
+ dba_delete("request_" . $token->key, $this->dbh);
+ return $token;
+ }/*}}}*/
+}/*}}}*/
+
+class OAuthUtil {/*{{{*/
+ public static function urlencodeRFC3986($string) {/*{{{*/
+ return str_replace('%7E', '~', rawurlencode($string));
+ }/*}}}*/
+
+ public static function urldecodeRFC3986($string) {/*{{{*/
+ return rawurldecode($string);
+ }/*}}}*/
+}/*}}}*/
+
+?>
\ No newline at end of file
--- /dev/null
+<?php
+/* Copyright (c) 2009 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * Author: Eric Bidelman <e.bidelman@google.com>
+ */
+
+$PRIV_KEY_FILE = '/path/to/your/rsa_private_key.pem';
+
+// OAuth library - http://oauth.googlecode.com/svn/code/php/
+require_once('OAuth.php');
+
+// Google's accepted signature methods
+$hmac_method = new OAuthSignatureMethod_HMAC_SHA1();
+$rsa_method = new OAuthSignatureMethod_RSA_SHA1();
+$SIG_METHODS = array($rsa_method->get_name() => $rsa_method,
+ $hmac_method->get_name() => $hmac_method);
+
+/**
+ * Makes an HTTP request to the specified URL
+ *
+ * @param string $http_method The HTTP method (GET, POST, PUT, DELETE)
+ * @param string $url Full URL of the resource to access
+ * @param array $extraHeaders (optional) Additional headers to include in each
+ * request. Elements are header/value pair strings ('Host: example.com')
+ * @param string $postData (optional) POST/PUT request body
+ * @param bool $returnResponseHeaders True if resp. headers should be returned.
+ * @return string Response body from the server
+ */
+function send_signed_request($http_method, $url, $extraHeaders=null,
+ $postData=null, $returnResponseHeaders=true) {
+ $curl = curl_init($url);
+ curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
+ curl_setopt($curl, CURLOPT_FAILONERROR, false);
+ curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
+
+ // Return request headers in the reponse
+// curl_setopt($curl, CURLINFO_HEADER_OUT, true);
+
+ // Return response headers ni the response?
+ if ($returnResponseHeaders) {
+ curl_setopt($curl, CURLOPT_HEADER, true);
+ }
+
+ $headers = array();
+ //$headers[] = 'GData-Version: 2.0'; // use GData v2 by default
+ if (is_array($extraHeaders)) {
+ $headers = array_merge($headers, $extraHeaders);
+ }
+
+ // Setup default curl options for each type of HTTP request.
+ // This is also a great place to add additional headers for each request.
+ switch($http_method) {
+ case 'GET':
+ curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);
+ break;
+ case 'POST':
+ curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);
+ curl_setopt($curl, CURLOPT_POST, 1);
+ curl_setopt($curl, CURLOPT_POSTFIELDS, $postData);
+ break;
+ case 'PUT':
+ $headers[] = 'If-Match: *';
+ curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);
+ curl_setopt($curl, CURLOPT_CUSTOMREQUEST, $http_method);
+ curl_setopt($curl, CURLOPT_POSTFIELDS, $postData);
+ break;
+ case 'DELETE':
+ $headers[] = 'If-Match: *';
+ curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);
+ curl_setopt($curl, CURLOPT_CUSTOMREQUEST, $http_method);
+ break;
+ default:
+ curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);
+ }
+
+ // Execute the request. If an error occures, fill the response body with it.
+ $response = curl_exec($curl);
+ if (!$response) {
+ $response = curl_error($curl);
+ }
+
+ // Add server's response headers to our response body
+ $response = curl_getinfo($curl, CURLINFO_HEADER_OUT) . $response;
+
+ curl_close($curl);
+
+ return $response;
+}
+
+/**
+* Takes XML as a string and returns it nicely indented
+*
+* @param string $xml The xml to beautify
+* @param boolean $html_output True if returned XML should be escaped for HTML.
+* @return string The beautified xml
+*/
+function xml_pretty_printer($xml, $html_output=false) {
+ $xml_obj = new SimpleXMLElement($xml);
+ $level = 2;
+
+ // Get an array containing each XML element
+ $xml = explode("\n", preg_replace('/>\s*</', ">\n<", $xml_obj->asXML()));
+
+ // Hold current indentation level
+ $indent = 0;
+
+ $pretty = array();
+
+ // Shift off opening XML tag if present
+ if (count($xml) && preg_match('/^<\?\s*xml/', $xml[0])) {
+ $pretty[] = array_shift($xml);
+ }
+
+ foreach ($xml as $el) {
+ if (preg_match('/^<([\w])+[^>\/]*>$/U', $el)) {
+ // opening tag, increase indent
+ $pretty[] = str_repeat(' ', $indent) . $el;
+ $indent += $level;
+ } else {
+ if (preg_match('/^<\/.+>$/', $el)) {
+ $indent -= $level; // closing tag, decrease indent
+ }
+ if ($indent < 0) {
+ $indent += $level;
+ }
+ $pretty[] = str_repeat(' ', $indent) . $el;
+ }
+ }
+
+ $xml = implode("\n", $pretty);
+ return $html_output ? htmlentities($xml) : $xml;
+}
+
+/**
+ * Joins key/value pairs by $inner_glue and each pair together by $outer_glue.
+ *
+ * Example: implode_assoc('=', '&', array('a' => 1, 'b' => 2)) === 'a=1&b=2'
+ *
+ * @param string $inner_glue What to implode each key/value pair with
+ * @param string $outer_glue What to impode each key/value string subset with
+ * @param array $array Associative array of query parameters
+ * @return string Urlencoded string of query parameters
+ */
+function implode_assoc($inner_glue, $outer_glue, $array) {
+ $output = array();
+ foreach($array as $key => $item) {
+ $output[] = $key . $inner_glue . urlencode($item);
+ }
+ return implode($outer_glue, $output);
+}
+
+/**
+ * Explodes a string of key/value url parameters into an associative array.
+ * This method performs the compliment operations of implode_assoc().
+ *
+ * Example: explode_assoc('=', '&', 'a=1&b=2') === array('a' => 1, 'b' => 2)
+ *
+ * @param string $inner_glue What each key/value pair is joined with
+ * @param string $outer_glue What each set of key/value pairs is joined with.
+ * @param array $array Associative array of query parameters
+ * @return array Urlencoded string of query parameters
+ */
+function explode_assoc($inner_glue, $outer_glue, $params) {
+ $tempArr = explode($outer_glue, $params);
+ foreach($tempArr as $val) {
+ $pos = strpos($val, $inner_glue);
+ $key = substr($val, 0, $pos);
+ $array2[$key] = substr($val, $pos + 1, strlen($val));
+ }
+ return $array2;
+}
+
+?>
\ No newline at end of file
projects / nextcloud-server.git / commitdiff