From a5770677d98d8f3ed0ea804e4cd6906f6ad95855 Mon Sep 17 00:00:00 2001
From: Tom MacWright <tom@macwright.org>
Date: Mon, 19 Nov 2012 22:22:24 -0500
Subject: [PATCH] Add oauth wrapper

---
 js/iD/OAuth.js | 60 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 60 insertions(+)
 create mode 100644 js/iD/OAuth.js

diff --git a/js/iD/OAuth.js b/js/iD/OAuth.js
new file mode 100644
index 000000000..fa7a791d4
--- /dev/null
+++ b/js/iD/OAuth.js
@@ -0,0 +1,60 @@
+iD.OAuth = function() {
+    var baseurl = 'http://api06.dev.openstreetmap.org',
+        oauth_secret = 'aMnOOCwExO2XYtRVWJ1bI9QOdqh1cay2UgpbhA6p',
+        oauth = {};
+
+    var o = {
+        oauth_consumer_key: 'zwQZFivccHkLs3a8Rq5CoS412fE5aPCXDw9DZj7R',
+        oauth_signature_method: 'HMAC-SHA1'
+    };
+
+    function timenonce(o) {
+        o.oauth_timestamp = ohauth.timestamp();
+        o.oauth_nonce = ohauth.nonce();
+        return o;
+    }
+
+    oauth.authenticate = function() {
+        var d = document.body.appendChild(document.createElement('div')),
+            ifr = d.appendChild(document.createElement('iframe'));
+        d.className = 'modal';
+        ifr.frameborder = 'no';
+        ifr.width = 600;
+        ifr.height = 400;
+
+        o = timenonce(o);
+        var url = baseurl + '/oauth/request_token';
+        o.oauth_signature = ohauth.signature(oauth_secret, '',
+            ohauth.baseString('POST', url, o));
+
+        ohauth.xhr('POST', url, o, null, {}, function(xhr) {
+            var token = ohauth.stringQs(xhr.response);
+            localStorage.oauth_request_token_secret = token.oauth_token_secret;
+            var at = baseurl + '/oauth/authorize?';
+            ifr.src = at + ohauth.qsString({
+                oauth_token: token.oauth_token, oauth_callback: location.href
+            });
+        });
+        ifr.onload = function() {
+            if (ifr.contentWindow.location.search) {
+                var search = ifr.contentWindow.location.search,
+                    oauth_token = ohauth.stringQs(search.slice(1)),
+                    url = baseurl + '/oauth/access_token';
+                o = timenonce(o);
+                d.parentNode.removeChild(d);
+
+                o.oauth_token = oauth_token.oauth_token;
+                var request_token_secret = localStorage.oauth_request_token_secret;
+                o.oauth_signature = ohauth.signature(oauth_secret, request_token_secret,
+                    ohauth.baseString('POST', url, o));
+                ohauth.xhr('POST', url, o, null, {}, function(xhr) {
+                    var access_token = ohauth.stringQs(xhr.response);
+                    localStorage.oauth_token = access_token.oauth_token;
+                    localStorage.oauth_token_secret = access_token.oauth_token_secret;
+                });
+            }
+        };
+    };
+
+    return oauth;
+};