From 38076f446f64c23e9adb0e5321e4a303613ac5e1 Mon Sep 17 00:00:00 2001
From: Jason Woofenden <jason@jasonwoof.com>
Date: Thu, 6 Oct 2011 02:10:01 -0400
Subject: [PATCH] login might work if node-expat did

---
 README          |   10 ---------
 README.markdown |   11 +++++++++
 auth.coffee     |   67 +++++++++++++++++++++++++++++++++++++++++++++++++++++--
 3 files changed, 76 insertions(+), 12 deletions(-)
 delete mode 100644 README
 create mode 100644 README.markdown

diff --git a/README b/README
deleted file mode 100644
index b22b84b..0000000
--- a/README
+++ /dev/null
@@ -1,10 +0,0 @@
-Setup
-=====
-
-1.	You'll need to save your auth credentials to ~/.libre.fm-cmus.auth:
-
-		unset HISTFILE
-		coffee -e "require('./auth.coffee').save_auth 'USERNAME','PASSWORD'"
-
-	(Substituting your libre.fm username and password of course.) The first
-	line disables history saving in bash, and perhaps other shells.
diff --git a/README.markdown b/README.markdown
new file mode 100644
index 0000000..b6d6e01
--- /dev/null
+++ b/README.markdown
@@ -0,0 +1,11 @@
+Setup
+=====
+
+1.	You'll need to save your auth credentials to ~/.libre.fm-cmus.auth:
+
+		unset HISTFILE
+		coffee -e "require('./auth.coffee').save_auth 'USERNAME','PASSWORD'"
+
+	(Substituting your libre.fm username and password of course.) The first
+	line disables history saving (in bash, and perhaps other shells) so your
+	password won't get into ~/.bash_history.
diff --git a/auth.coffee b/auth.coffee
index 619e169..833b553 100644
--- a/auth.coffee
+++ b/auth.coffee
@@ -1,18 +1,81 @@
 fs = require 'fs'
+http = require 'http'
 crypto = require 'crypto'
+expat = require 'node-expat'
+
+auth = {}
 
 md5 = (str) ->
 	sum = crypto.createHash 'md5'
 	sum.update str
 	return sum.digest 'hex'
 
-new_auth_token = (user, pass) -> md5(user + md5(pass))
+new_auth_token = (user, pass) ->
+	token = md5(user + md5(pass))
+	auth.user = user
+	auth.token = token
+	return token
 
+auth_file = "#{process.env.HOME}/.libre.fm-cmus.auth"
 save_auth = (user, pass, callback) ->
 	token = new_auth_token(user, pass)
 	text = JSON.stringify user: user, token: new_auth_token(user, pass)
-	fs.writeFile "#{process.env.HOME}/.libre.fm-cmus.auth", text, 'utf8', callback
+	fs.writeFile auth_file, text, 'utf8', callback
 	return token
 
+# load login credentials from settings file
+load_auth = (callback) ->
+	if auth.user and auth.token
+		callback auth
+		return
+
+	fs.readFile auth_file, 'utf8', (err, data) ->
+		if err
+			callback err
+		else
+			callback null, JSON.parse data
+
+# login and get a session key
+login = (callback) ->
+	load_auth (err, auth) ->
+		return callback(err) if err?
+
+		http.get { host: 'alpha.libre.fm', port: 80, path: "/2.0/?method=auth.getmobilesession&username=#{auth.user}&authToken=#{auth.token}"}, (res) ->
+			if res.statusCode != 200
+				console.log "login response code: #{res.statusCode}"
+				callback "login response code: #{res.statusCode}"
+				return
+
+			res.setEncoding 'utf8'
+			body = ''
+			res.on 'data', (chunk) ->
+				body += chunk
+			res.on 'end', ->
+				parser = new expat.Parser 'UTF-8'
+				cur_tag = ''
+				done = false
+				parser.on 'startElement', (name, attrs) ->
+					cur_tag = name
+				parser.on 'text', (str) ->
+					if cur_tag is 'key'
+						done = true
+						auth.sk = str
+						console.log("got key \"#{str}\"")
+						callback null, str
+					else if cur_tag is 'error'
+						done = true
+						callback "login failed: #{str}"
+					# ignore other stuff in there
+				unless parser.parse body, true
+					done = true
+					callback "login server response wouldn't parse as XML."
+					console.log "login server sent us bad XML: #{body}"
+
+				unless done
+					callback "Couldn't understand response from login server"
+
+
+
+exports.login = login # fixme remove this from the API and call it automatically
 exports.new_auth_token = new_auth_token
 exports.save_auth = save_auth
-- 
1.7.10.4