SayaaS

[jamesdabbs]

Due on Feb 19 @ 05:00pm Make a say server so your friends can make your computer talk to you

Objectives

Learning Objectives

After completing this assignment, you should…

• Be able to write controllers to expose functionality to the local network
• Make system calls based on user input
• Appreciate the difficulty in securing anything doing the above

  Performance Objectives

After completing this assignment, you be able to effectively use

• Sinatra or Camping to build a web server in Ruby
• Their respective DSLs for routing and handling an incoming request

  Details

  Deliverables

• A repo containing at least:
  • app.rb
  • example.rb, based on the following:

require 'httparty'

url = "http://localhost:4567" # update this if needed

HTTParty.post "#{url}/cellos", body: { phrase: 'Droid' }
sleep 1

HTTParty.post "#{url}/badnews", body: { phrase: 'Daisy, Daisy, give me your answer do' }
sleep 1

# Add other examples here

puts HTTParty.get "#{url}/log?limit=5"

Requirements

• Running ruby app.rb should start a server
• Running ruby example.rb (with the server up) should play several phrases, and then log the most recent requests

  Normal Mode

Implement endpoints POST /cellos and POST /badnews that take a phrase param and say that phrase with the associated voice.

Any call to say should be logged for auditing later. Record the time and ip address of the requester. GET /logs?limit=n should show the n most recent such requests.

You are encouraged to add more voices and examples as you see fit.

Hard Mode

Maintain a whitelist of ips allowed to use the service. Automatically block users if they make too many calls per minute.

Notes

Be very careful exposing system calls to the outside world. Think about how a malicious user could use them to attack your system.

Additional Resources

• Refer to harder-better from class, and note the commits exposing it to the local network on a port and fixing HTTParty requests.
• Read through the Sinatra or Camping intros.
• Check out a list of available say voices.