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odkbuild_server.rb
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odkbuild_server.rb
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# encoding: UTF-8
require 'sinatra'
require 'json'
require 'oauth'
require './lib/multipart'
require './model/user'
require './model/form'
require './model/connection_manager'
class OdkBuild < Sinatra::Application
disable :run
set :views, File.dirname(__FILE__) + '/views' # required for dev env
before do
content_type :json
end
# For dev server purposes, load index via Sinatra. Eventually, just do it
# with Apache.
get '/' do
content_type :html
erb :index
end
# Simple RESTful service follows
# Users
get '/users' do
status 403
return { :error => 'forbidden' }.to_json
end
post '/users' do
return error_validation_failed if [:username, :password, :email].
any?{ |key| !(params.has_key? key.to_s) }
return error_validation_failed if User.find params[:username]
user = User.create params
env['warden'].authenticate(:odkbuild)
return user.data.to_json
end
# non-RESTful (auth): gets authenticated user
get '/user' do
user = env['warden'].user
return error_permission_denied if user.nil?
return user.data.to_json
end
get '/user/:username' do
user = User.find params[:username]
return error_not_found if user.nil?
return user.data.to_json
end
put '/user/:username' do
user = env['warden'].user
return error_permission_denied unless user.username == params[:username]
return error_validation_failed if params[:password].nil? and
!(user.authenticate? params[:old_password])
user.update params
user.save
return user.data.to_json
end
delete '/user/:username' do
user = env['warden'].user
return error_permission_denied unless user.username == params[:username]
user.delete!
return { :success => 'true' }.to_json
end
# Forms
get '/forms' do
user = env['warden'].user
return error_permission_denied if user.nil?
return user.forms.to_json
end
# only takes JSON!
post '/forms' do
user = env['warden'].user
# pull JSON data out
request_data = JSON.parse request.body.read.to_s
request_data.deep_symbolize_keys!
# validate input
return error_validation_failed if request_data[:title].nil?
form = Form.create request_data, user
user.add_form form
user.save
return form.data.to_json
end
get '/form/:form_id' do
user = env['warden'].user
form = Form.find(params[:form_id])
return error_not_found if form.nil?
return error_permission_denied if form.owner != user
return form.data.to_json
end
# only takes JSON!
put '/form/:form_id' do
user = env['warden'].user
# pull JSON data out
request_data = JSON.parse request.body.read.to_s
request_data.deep_symbolize_keys!
form = Form.find(params[:form_id])
return error_not_found if form.nil?
return error_permission_denied if form.owner != user
form.update request_data
form.save
return form.data.to_json
end
delete '/form/:form_id' do
user = env['warden'].user
form = Form.find(params[:form_id])
return error_not_found if form.nil?
return error_permission_denied if form.owner != user
form.delete!
return { :success => 'true' }.to_json
end
# Auth methods
post '/login' do
env['warden'].authenticate(:odkbuild)
if env['warden'].authenticated?
return env['warden'].user.data.to_json
else
return error_permission_denied
end
end
get '/logout' do
env['warden'].logout
return { :user => 'none' }.to_json
end
get '/unauthenticated' do
status 401
return { :error => 'unauthenticated' }.to_json
end
post '/reset_password' do
user = User.find params[:username]
new_password = user.reset_password!
user.save
(Pony.mail :to => user.email, :from => 'support@opendatakit.org',
:subject => 'Your new ODK Build password.',
:body => "Your ODK Build password has been reset. The new password is #{new_password}.\n\nThanks,\nThe ODK Build Team")
return { :success => 'true' }.to_json
end
# Util methods
# bounce a payload off the server to trigger a download
post '/download' do
content_type :xml
attachment params[:filename]
return params[:payload]
end
# bounce a payload off the server and serialize it for native download
post '/binary/save' do
content_type 'application/octet-stream'
attachment params[:filename]
return Marshal.dump JSON.parse params[:payload]
end
# bounce a file off the server and deserialize it for native upload
post '/binary/load' do
# read up whatever file we got, dump it right back to client
begin
return (Marshal.load params[:file][:tempfile]).to_json
rescue
return { :error => true }.to_json
end
end
# bounce a payload through the server to aggregate
post '/aggregate/post' do
# make sure we're good to go
user = env['warden'].user
return error_permission_denied unless user
return error_validation_failed unless params[:payload]
# generate some local ids
local_token = "#{Time.now.to_i}_#{user.username}"
oauth_callback = "http://#{request.host_with_port}/aggregate/return/#{local_token}"
# oauth
instance_uri = "https://#{params[:aggregate_instance_name]}.appspot.com"
consumer = get_oauth_consumer instance_uri
request_token = consumer.get_request_token :oauth_callback => oauth_callback
# store off stuff we'll need later
ConnectionManager.connection[:aggregate_requests][local_token] = {
'site' => instance_uri,
'instance_name' => params[:aggregate_instance_name],
'token' => request_token.token,
'secret' => request_token.secret,
'payload' => params[:payload]
}
# send the user to the right place
redirect request_token.authorize_url :oauth_callback => oauth_callback
end
get '/aggregate/return/:local_token' do
# get our info back
aggregate_request = ConnectionManager.connection[:aggregate_requests][params[:local_token]]
# oauth
consumer = get_oauth_consumer aggregate_request['site']
request_token = OAuth::RequestToken.new consumer, aggregate_request['token'], aggregate_request['secret']
access_token = request_token.get_access_token :oauth_verifier => params[:oauth_verifier]
# fire off our request
body, headers = Multipart::Post.prepare_query 'form_def_file' => { :filename => 'form.xml', :content => aggregate_request['payload'] }
result = access_token.post '/upload?auth=oauth', body, headers
# look at the bloody remains
unless (result.is_a? Net::HTTPSuccess) || (result.is_a? Net::HTTPFound) # aggregate is really weird.
# something went wrong
status 400
return { :error => 'Something went wrong when trying to post to Aggregate.' }.to_json
end
content_type :html
@aggregate_instance_uri = aggregate_request['site']
erb :aggregate_success
end
private
def error_validation_failed
status 400
return { :error => 'validation failed' }.to_json
end
def error_permission_denied
status 401
return { :error => 'permission denied' }.to_json
end
def error_not_found
status 404
return { :error => 'not found' }.to_json
end
def get_oauth_consumer(site)
OAuth::Consumer.new ConfigManager['oauth_key'], ConfigManager['oauth_secret'],
{ :site => site,
:request_token_path => '/_ah/OAuthGetRequestToken',
:authorize_path => '/_ah/OAuthAuthorizeToken',
:access_token_path => '/_ah/OAuthGetAccessToken' }
end
end