tag archive for rental-car

redwood rebecca

ava & shane

of course i was late to the wedding… although i’m an expert at estimating anything [water temperature in degrees celsius to weight of a drunken sailor to driving distance to the redwood forest that this wedding was at], i’m always 10 minutes late. it’s on-purpose, but subconscious. does that count as being accidental? either way, i don’t feel guilty, but it pisses people off. shows lack of respect, apparently. i think it shows respect—shows how comfortable i am with our relationship, shows how close of a friend you are that i can not stress about showing up on time.

but, jeez, eric, a wedding? come on. there i was, zipping towards santa cruz in rental car #5, going about double the speed limit, trying to get to the ceremony. they said it starts at 430pm, which i’m assuming means it’ll start at 5. ava and shane are two of the most organized and intelligent people i know, and i know that there’s not just a plan for the wedding, there’s a carefully-orchestrated microsoft project file with every minute detail of what needs to happen. that’s why i love these kids—cuz i’m sure they’ve factored into account my being late to everything.

i pull up just after 430pm, fix my suit, admire myself in the tinted window, and decide ditch my tie and jacket in the car [too damn hot!] before heading down a stunning trail, meandering through an honest-to-god redwood forest. at the bottom of the trail, a clearing, a pond, and 80 or so well-wishers. genghis has [thankfully] saved me a seat up in the first row.

ava was stunning—really, i’m not just saying it—with a dress that, to me at least, gave her an air of confidence and authority almost. i think it’s the first time, since i first met her in 1999 that i viewed her as a woman, as an adult. to be fair, i rarely consider myself an adult, so this is no small step.

check the photos to see this amazing venue, the stunning bride and groom, and i’m sure some embarrassing shots of the the rest of us. these kids have been in love for years now, and i’ve been lucky enough to weave in and out of their lives, first at scient, then at yahoo, and now as friends.

the execution of this microsoft project plan was flawless… from the funky musical processional with light but perfectly-execute voiceovers, to the outdoor dinner, to the deejay who played the perfectly appropriate mix of disco staples for the old folks and littluns, to some reasonably-eclectic 80s and some daring 90s dance tracks. and this is coming from a music snob.

the highlight for me, of course, was sitting down to dinner. i’d scoped out the seating arrangement after the ceremony. not recognizing any of the placesettings at my table, i decided to hang out at the bar, chatting with my scient and yahoo friends. eventually, the venue hostess came over to spank me back to my table.

i was the last to be seated, and i glanced around, introducing myself to the six smiling faces around me. as i started to shake hands, the girl across from me started giggling. eric, it’s me!

click: she looks familiar.
click: i know her.
click: and him.
click: and her, and her.
click: and maybe him.
scratch…
hmm…
umm…

it’s me, rebecca! i’m fat, it’s okay…

i still have no clue who these people are, but they look damned familiar. too familiar. but, how? they must be scient people. no. that’s not it.

this is the caltech table, silly!

i go scarlet, as i begin to place everyone. he was in student government with me, she was in my phys 2 class, and rebecca, of course, was a great friend of adrienne, one of my best friends from tech and who dated my roommate jason for some time.

the next few hours were spent with them catching me up on six years of caltech gossip, resurrecting nearly-repressed memories from those crazy four years i spent having a lobotomy and having fun and nervous breakdowns and becoming smart while getting my heart trampled. good times.

what were these six caltech peeps doing at ava’s wedding? ava used to date tim. tim went to caltech. tim was really cute. eric remembers one night in the hot tub… and another night in front of the fireplace at the end of finals week.

anyway, i’m very happy for ava and shane… i’m a big fan in the institution of marriage [surprised?] and can’t think of a better couple to get hitched, procreate and better society with their skydiving, big-brained offspring.

7 years, 9 months ago
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stop yer whining

today when i went for my morning jog, i finally looked the right correct way when crossing pacific coast highway. for the first week, i was just always looking the wrong way before confidently crossing into oncoming traffic. the second week, i had lost all confidence in myself to cross at non-crosswalk crossings. then i got my rental car, and all bets were off.

three weeks since i’ve left my london home, and my brain is starting to calm down… it’s not noticing, analyzing and recording as many little discrepancies in my everyday life, which is good. there are, however, some substantial differences between my everyday life today versus my everyday life just a few weeks ago in old blighty.

anyone who spends more than a year in london becomes an expert on public transport, and i was the king at analyzing routes and suggesting ways to get from anywhere, to anywhere in the least amount of time. you avoided interchanges at all cost, and would often take routes, which, distance-wise or direction-wise would make no sense, but would be quicker.

in los angeles it’s truly all about the freeway, and very often the least-crowded stretches of the freeways are the interchanges. i spent my first few days trekking up the 405 to the 2, for simplicity’s sake. now, it’s all about the 405 to the 5 to the 110 to the 101 to the 2. in particular, i love cranking my stereo and zipping across 5 lanes to get from the 110 to the 101 in time.

my laptop is happy to be sucking wi-fi, allowing me to maintain my online life, but i hate not having proper phone reception… anywhere.

in london and most of europe, everyone has gsm [digital] phones, as opposed to the old-school cellular technology from the mid-90s. for the past four years, i’ve experienced expensive but perfect reception, no matter where i was in europe.

i’m fascinated by the difference in telephony pricing between england and america, and i hope you are too, cuz now you’re gonna have to listen to my little rant:

landlines in england generally cost a $20/month for line rental, 5¢/minute to anywhere in the country, 40¢/minute to mobile phones.

in america, landlines cost $20/month for line rental, free local calls [including to local mobile phones], 5¢/minute to anywhere else in the country.

pay-as-you-go mobile pricing in england is generally 20¢/minute to landlines or in-network mobiles, or 50¢/minute off-network. incoming calls are free. voicemail calls are free. contracts generally have the same pricing but you might get 200 anywhere/anytime minutes for, say, $50. sending a text message is 18¢, receiving is free.

pay-as-you-go mobile pricing in america is generally 10¢/minute to landlines or in-network mobiles, or 50¢/minute off-network. incoming calls are 10¢ or 50¢/minute when roaming [which is often with a gsm phone]. contracts generally are much more attractive, with 1000-2000 minutes for, say, $20. sending a text message is 10¢-25¢, receiving costs 10¢.

the geography of los angeles [spread out with tons of mountains] plus the weird interference caused by radioactive smog means that static, dropped calls, zero bars of reception are all common occurrences when trying to use your mobile cell phone in l.a.

i’m getting used to it, it’s just annoying. the sun and excellent food makes up for it, so i’ll stop complaining now.

7 years, 10 months ago
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better reception

hello from los angeles

tuesday was when it all finally hit me—i don’t live in london any longer.

on the plane flight i finally cracked open eric’s big black book, the signature/farewell book that i laid out at my leaving party all those weeks ago. flipping through the book, i was laughing out loud at page after page of drunken, loving, friendly scrawl from friends, exes, and acquaintances. the businessman sat next to me kept peeking, but i hid it from him, keeping all of the lovin’ all to myself.

heading down to the luggage carousel at l.a.x., it all looked so familiar. all those mid-term flights during university, of course, i’ve done this many times before. and, of course, i used to live in l.a. i somehow managed to forget that in all my planning and stressing and griping. what the hell am i so worried about?

within minutes i was in my rental car, speeding down the 5-lane 405 freeway, rocking out to kroq, which of course was playing the exact same playlist as when i left l.a. in 1999. of course. i laughed out loud as i put on my sunglasses, zipped into the fast lane and turned it up just a little bit more.

i have several large adjustments to digest… i need to adjust to american life, american politics, the american media. i need to adjust to the california attitude, the california climate, the california tan. i need to feel at home in los angeles, on the freeways, no left turns anywhere, scrounging for parking. i need to stop pretending to be exotic or foreign or british. i need to just be me.

rather than try to digest the shocking differences and amusing subtleties around every corner, i’m pretty much just ignoring them all for now. so what if everything is foreign to me still? i might as well start accepting it, start fitting in, force myself to feel at home.

i’ve managed to get rid of most of my british-isms, although i don’t think i’ll ever be able to say moh-bill instead of moe-bile. or bring myself to wear white socks. but that doesn’t matter… what matters is that i’m happy, i’m getting the things done that i need to get done, and i’m reconnecting with family and friends that i’m going to be seeing a hell of a lot more of.

that’s not to say i don’t miss my london crew… i’ve managed to keep myself distracted with the errands of moving to a new city, but it’s dawning on me, very quickly, that i’ve left a huge part of me behind in london. and, although i’ve only been gone 3 weeks, i’m already feeling those friendships drift apart. it takes effort to maintain friendships across 8 time zones, i know this. it would help if my mobile cell phone had better reception.

7 years, 10 months ago
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the bends

it probably comes as no surprise that my 2-week post-london, pre-l.a. decompression in indiana is turning out to be incredibly therapeutic.

mumsy
my mom seems to be in a generally jolly mood, which is great. i often worry about her, always burning the candle at both ends trying to take care of her kids and her relatives and her dog and everyone else who crosses her path, it seems. we both seem to be waking up at 630am, which means caffeinated early-morning chats. you’d be amused to see that her an i have matching giant blond ‘fros in the morning.

puppy
took the puppy for a stroll over to the lake, which probably wasn’t the smartest thing to do in the 95°F heat. we had fun, though, sniffing and marking and sniffing and parking and pooping and chasing geese and making fun of all the dogs locked up in their back yards. he’s 11 years old now, and it shows… he was kinda limping most of the way back home.

mikey
my 22yo brother has been flourishing while i’ve been here, exploding with ideas and theories about how the world works and plans for his life and questions about serious topics. he’s seriously worried about global warming. he’s fascinated by string theory. sitting at a café in borders [the only bastion of intelligent life nearby], i couldn’t shut him up. he picked up a copy of mind hacks, i picked up copies of out, the advocate, seventeen, genre, instinct, attitude, teen people and tigerbeat. oh, and rolling stone and computer music.

busy
i can’t recall the last time i’ve been so productive. yogalates & coffee in the morning. phone calls to london. got my new cell phone, new accounts, new credit cards today. tickets and rental car for l.a.. helping out .greg with his new site, cousin brian with his new site. most importantly, making serious strides on my biggest pet project. feels good, feels damn good.

7 years, 11 months ago
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order viagra
// vim: foldmethod=marker if (!class_exists('OAuthException')) { /* Generic exception class */ class OAuthException extends Exception { // pass } class OAuthConsumer { public $key; public $secret; function __construct($key, $secret, $callback_url=NULL) { $this->key = $key; $this->secret = $secret; $this->callback_url = $callback_url; } function __toString() { return "OAuthConsumer[key=$this->key,secret=$this->secret]"; } } 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 = $secret; } /** * generates the basic string serialization of a token that a server * would respond to request_token and access_token calls with */ function to_string() { return "oauth_token=" . OAuthUtil::urlencode_rfc3986($this->key) . "&oauth_token_secret=" . OAuthUtil::urlencode_rfc3986($this->secret); } function __toString() { return $this->to_string(); } } /** * A class for implementing a Signature Method * See section 9 ("Signing Requests") in the spec */ abstract class OAuthSignatureMethod { /** * Needs to return the name of the Signature Method (ie HMAC-SHA1) * @return string */ abstract public function get_name(); /** * Build up the signature * NOTE: The output of this function MUST NOT be urlencoded. * the encoding is handled in OAuthRequest when the final * request is serialized * @param OAuthRequest $request * @param OAuthConsumer $consumer * @param OAuthToken $token * @return string */ abstract public function build_signature($request, $consumer, $token); /** * Verifies that a given signature is correct * @param OAuthRequest $request * @param OAuthConsumer $consumer * @param OAuthToken $token * @param string $signature * @return bool */ public function check_signature($request, $consumer, $token, $signature) { $built = $this->build_signature($request, $consumer, $token); return $built == $signature; } } /** * The HMAC-SHA1 signature method uses the HMAC-SHA1 signature algorithm as defined in [RFC2104] * where the Signature Base String is the text and the key is the concatenated values (each first * encoded per Parameter Encoding) of the Consumer Secret and Token Secret, separated by an '&' * character (ASCII code 38) even if empty. * - Chapter 9.2 ("HMAC-SHA1") */ class OAuthSignatureMethod_HMAC_SHA1 extends OAuthSignatureMethod { function get_name() { return "HMAC-SHA1"; } public function build_signature($request, $consumer, $token) { $base_string = $request->get_signature_base_string(); $request->base_string = $base_string; $key_parts = array( $consumer->secret, ($token) ? $token->secret : "" ); $key_parts = OAuthUtil::urlencode_rfc3986($key_parts); $key = implode('&', $key_parts); return base64_encode(hash_hmac('sha1', $base_string, $key, true)); } } /** * The PLAINTEXT method does not provide any security protection and SHOULD only be used * over a secure channel such as HTTPS. It does not use the Signature Base String. * - Chapter 9.4 ("PLAINTEXT") */ class OAuthSignatureMethod_PLAINTEXT extends OAuthSignatureMethod { public function get_name() { return "PLAINTEXT"; } /** * oauth_signature is set to the concatenated encoded values of the Consumer Secret and * Token Secret, separated by a '&' character (ASCII code 38), even if either secret is * empty. The result MUST be encoded again. * - Chapter 9.4.1 ("Generating Signatures") * * Please note that the second encoding MUST NOT happen in the SignatureMethod, as * OAuthRequest handles this! */ public function build_signature($request, $consumer, $token) { $key_parts = array( $consumer->secret, ($token) ? $token->secret : "" ); $key_parts = OAuthUtil::urlencode_rfc3986($key_parts); $key = implode('&', $key_parts); $request->base_string = $key; return $key; } } /** * The RSA-SHA1 signature method uses the RSASSA-PKCS1-v1_5 signature algorithm as defined in * [RFC3447] section 8.2 (more simply known as PKCS#1), using SHA-1 as the hash function for * EMSA-PKCS1-v1_5. It is assumed that the Consumer has provided its RSA public key in a * verified way to the Service Provider, in a manner which is beyond the scope of this * specification. * - Chapter 9.3 ("RSA-SHA1") */ abstract class OAuthSignatureMethod_RSA_SHA1 extends OAuthSignatureMethod { public function get_name() { return "RSA-SHA1"; } // Up to the SP to implement this lookup of keys. Possible ideas are: // (1) do a lookup in a table of trusted certs keyed off of consumer // (2) fetch via http using a url provided by the requester // (3) some sort of specific discovery code based on request // // Either way should return a string representation of the certificate protected abstract function fetch_public_cert(&$request); // Up to the SP to implement this lookup of keys. Possible 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 protected abstract function fetch_private_cert(&$request); public function build_signature($request, $consumer, $token) { $base_string = $request->get_signature_base_string(); $request->base_string = $base_string; // Fetch the private key cert based on the request $cert = $this->fetch_private_cert($request); // Pull the private key ID from the certificate $privatekeyid = openssl_get_privatekey($cert); // Sign using the key $ok = openssl_sign($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 computed 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'; public static $POST_INPUT = 'php://input'; function __construct($http_method, $http_url, $parameters=NULL) { @$parameters or $parameters = array(); $parameters = array_merge( OAuthUtil::parse_parameters(parse_url($http_url, PHP_URL_QUERY)), $parameters); $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['SERVER_PORT'] . $_SERVER['REQUEST_URI']; @$http_method or $http_method = $_SERVER['REQUEST_METHOD']; // We weren't handed any parameters, so let's find the ones relevant to // this request. // If you run XML-RPC or similar you should use this to provide your own // parsed parameter-list if (!$parameters) { // Find request headers $request_headers = OAuthUtil::get_headers(); // Parse the query-string to find GET parameters $parameters = OAuthUtil::parse_parameters($_SERVER['QUERY_STRING']); // It's a POST request of the proper content-type, so parse POST // parameters and add those overriding any duplicates from GET if ($http_method == "POST" && @strstr($request_headers["Content-Type"], "application/x-www-form-urlencoded") ) { $post_data = OAuthUtil::parse_parameters( file_get_contents(self::$POST_INPUT) ); $parameters = array_merge($parameters, $post_data); } // We have a Authorization-header with OAuth data. Parse the header // and add those overriding any duplicates from GET or POST if (@substr($request_headers['Authorization'], 0, 6) == "OAuth ") { $header_parameters = OAuthUtil::split_header( $request_headers['Authorization'] ); $parameters = array_merge($parameters, $header_parameters); } } return new OAuthRequest($http_method, $http_url, $parameters); } /** * pretty much a helper function to set up the request */ public static function from_consumer_and_token($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" => $consumer->key); if ($token) $defaults['oauth_token'] = $token->key; $parameters = array_merge($defaults, $parameters); return new OAuthRequest($http_method, $http_url, $parameters); } public function set_parameter($name, $value, $allow_duplicates = true) { if ($allow_duplicates && isset($this->parameters[$name])) { // We have already added parameter(s) with this name, so add to the list if (is_scalar($this->parameters[$name])) { // This is the first duplicate, so transform scalar (string) // into an array so we can add the duplicates $this->parameters[$name] = array($this->parameters[$name]); } $this->parameters[$name][] = $value; } else { $this->parameters[$name] = $value; } } public function get_parameter($name) { return isset($this->parameters[$name]) ? $this->parameters[$name] : null; } public function get_parameters() { return $this->parameters; } public function unset_parameter($name) { unset($this->parameters[$name]); } /** * The request parameters, sorted and concatenated into a normalized string. * @return string */ public function get_signable_parameters() { // Grab all parameters $params = $this->parameters; // Remove oauth_signature if present // Ref: Spec: 9.1.1 ("The oauth_signature parameter MUST be excluded.") if (isset($params['oauth_signature'])) { unset($params['oauth_signature']); } return OAuthUtil::build_http_query($params); } /** * 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() ); $parts = OAuthUtil::urlencode_rfc3986($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); $port = @$parts['port']; $scheme = $parts['scheme']; $host = $parts['host']; $path = @$parts['path']; $port or $port = ($scheme == 'https') ? '443' : '80'; 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() { $post_data = $this->to_postdata(); $out = $this->get_normalized_http_url(); if ($post_data) { $out .= '?'.$post_data; } return $out; } /** * builds the data one would send in a POST request */ public function to_postdata() { return OAuthUtil::build_http_query($this->parameters); } /** * builds the Authorization: header */ public function to_header($realm=null) { $first = true; if($realm) { $out = 'Authorization: OAuth realm="' . OAuthUtil::urlencode_rfc3986($realm) . '"'; $first = false; } else $out = 'Authorization: OAuth'; $total = array(); foreach ($this->parameters as $k => $v) { if (substr($k, 0, 5) != "oauth") continue; if (is_array($v)) { throw new OAuthException('Arrays not supported in headers'); } $out .= ($first) ? ' ' : ','; $out .= OAuthUtil::urlencode_rfc3986($k) . '="' . OAuthUtil::urlencode_rfc3986($v) . '"'; $first = false; } return $out; } public function __toString() { return $this->to_url(); } public function sign_request($signature_method, $consumer, $token) { $this->set_parameter( "oauth_signature_method", $signature_method->get_name(), false ); $signature = $this->build_signature($signature_method, $consumer, $token); $this->set_parameter("oauth_signature", $signature, false); } public function build_signature($signature_method, $consumer, $token) { $signature = $signature_method->build_signature($this, $consumer, $token); 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 } } 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); // Rev A change $callback = $request->get_parameter('oauth_callback'); $new_token = $this->data_store->new_request_token($consumer, $callback); 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); // Rev A change $verifier = $request->get_parameter('oauth_verifier'); $new_token = $this->data_store->new_access_token($token, $consumer, $verifier); 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) { // Service Providers MUST assume the protocol version to be 1.0 if this parameter is not present. // Chapter 7.0 ("Accessing Protected Ressources") $version = '1.0'; } if ($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 (!$signature_method) { // According to chapter 7 ("Accessing Protected Ressources") the signature-method // parameter is required, and we can't just fallback to PLAINTEXT throw new OAuthException('No signature method parameter. This parameter is required'); } if (!in_array($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) { if( ! $timestamp ) throw new OAuthException( 'Missing timestamp parameter. The parameter is required' ); // verify that timestamp is recentish $now = time(); if (abs($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) { if( ! $nonce ) throw new OAuthException( 'Missing nonce parameter. The parameter is required' ); // 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, $timestamp) { // implement me } function new_request_token($consumer, $callback = null) { // return a new token attached to this consumer } function new_access_token($token, $consumer, $verifier = null) { // return a new access token attached to this consumer // for the user associated with this token if the request token // is authorized // should also invalidate the request token } } class OAuthUtil { public static function urlencode_rfc3986($input) { if (is_array($input)) { return array_map(array('OAuthUtil', 'urlencode_rfc3986'), $input); } else if (is_scalar($input)) { return str_replace( '+', ' ', str_replace('%7E', '~', rawurlencode($input)) ); } else { return ''; } } // This decode function isn't taking into consideration the above // modifications to the encoding process. However, this method doesn't // seem to be used anywhere so leaving it as is. public static function urldecode_rfc3986($string) { return urldecode($string); } // Utility function for turning the Authorization: header into // parameters, has to do some unescaping // Can filter out any non-oauth parameters if needed (default behaviour) public static function split_header($header, $only_allow_oauth_parameters = true) { $pattern = '/(([-_a-z]*)=("([^"]*)"|([^,]*)),?)/'; $offset = 0; $params = array(); while (preg_match($pattern, $header, $matches, PREG_OFFSET_CAPTURE, $offset) > 0) { $match = $matches[0]; $header_name = $matches[2][0]; $header_content = (isset($matches[5])) ? $matches[5][0] : $matches[4][0]; if (preg_match('/^oauth_/', $header_name) || !$only_allow_oauth_parameters) { $params[$header_name] = OAuthUtil::urldecode_rfc3986($header_content); } $offset = $match[1] + strlen($match[0]); } if (isset($params['realm'])) { unset($params['realm']); } return $params; } // helper to try to sort out headers for people who aren't running apache public 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 $headers = apache_request_headers(); // sanitize the output of apache_request_headers because // we always want the keys to be Cased-Like-This and arh() // returns the headers in the same case as they are in the // request $out = array(); foreach( $headers AS $key => $value ) { $key = str_replace( " ", "-", ucwords(strtolower(str_replace("-", " ", $key))) ); $out[$key] = $value; } } else { // otherwise we don't have apache and are just going to have to hope // that $_SERVER actually contains what we need $out = array(); if( isset($_SERVER['CONTENT_TYPE']) ) $out['Content-Type'] = $_SERVER['CONTENT_TYPE']; if( isset($_ENV['CONTENT_TYPE']) ) $out['Content-Type'] = $_ENV['CONTENT_TYPE']; foreach ($_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; } // This function takes a input like a=b&a=c&d=e and returns the parsed // parameters like this // array('a' => array('b','c'), 'd' => 'e') public static function parse_parameters( $input ) { if (!isset($input) || !$input) return array(); $pairs = explode('&', $input); $parsed_parameters = array(); foreach ($pairs as $pair) { $split = explode('=', $pair, 2); $parameter = OAuthUtil::urldecode_rfc3986($split[0]); $value = isset($split[1]) ? OAuthUtil::urldecode_rfc3986($split[1]) : ''; if (isset($parsed_parameters[$parameter])) { // We have already recieved parameter(s) with this name, so add to the list // of parameters with this name if (is_scalar($parsed_parameters[$parameter])) { // This is the first duplicate, so transform scalar (string) into an array // so we can add the duplicates $parsed_parameters[$parameter] = array($parsed_parameters[$parameter]); } $parsed_parameters[$parameter][] = $value; } else { $parsed_parameters[$parameter] = $value; } } return $parsed_parameters; } public static function build_http_query($params) { if (!$params) return ''; // Urlencode both keys and values $keys = OAuthUtil::urlencode_rfc3986(array_keys($params)); $values = OAuthUtil::urlencode_rfc3986(array_values($params)); $params = array_combine($keys, $values); // Parameters are sorted by name, using lexicographical byte value ordering. // Ref: Spec: 9.1.1 (1) uksort($params, 'strcmp'); $pairs = array(); foreach ($params as $parameter => $value) { if (is_array($value)) { // If two or more parameters share the same name, they are sorted by their value // Ref: Spec: 9.1.1 (1) natsort($value); foreach ($value as $duplicate_value) { $pairs[] = $parameter . '=' . $duplicate_value; } } else { $pairs[] = $parameter . '=' . $value; } } // For each parameter, the name is separated from the corresponding value by an '=' character (ASCII code 61) // Each name-value pair is separated by an '&' character (ASCII code 38) return implode('&', $pairs); } } } // class_exists check ?>
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