Class: Votifier::Server

Inherits:
Object
  • Object
show all
Defined in:
lib/votifier/server.rb

Defined Under Namespace

Classes: Error

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(opts) ⇒ Server

Returns a new instance of Server.



7
8
9
10
 
# File 'lib/votifier/server.rb', line 7

def initialize(opts)
  raise ':private_key options is required' unless opts.key?(:private_key)
  init_private_key(opts[:private_key])
end

Instance Attribute Details

#private_key ⇒ Object (readonly)

Returns the value of attribute private_key.



5
6
7
 
# File 'lib/votifier/server.rb', line 5

def private_key
  @private_key
end

Instance Method Details

#decrypt(encrypted_string) ⇒ Object 



51
52
53
54
 
# File 'lib/votifier/server.rb', line 51

def decrypt(encrypted_string)
  string = private_key.private_decrypt(encrypted_string)
  string
end

#handle_connection(client) ⇒ Object 



25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
 
# File 'lib/votifier/server.rb', line 25

def handle_connection(client)
  lines = ""
  while line = client.gets
    lines += line
  end
  begin
    vote_info = parse_content(lines)
    vote = Vote.from_array(vote_info)
    puts vote.to_h
    client.close                 # Disconnect from the client
  rescue => e
    puts e.inspect
    puts e.backtrace
  end
end

#init_private_key(private_key_file) ⇒ Object 



12
13
14
 
# File 'lib/votifier/server.rb', line 12

def init_private_key(private_key_file)
  @private_key = Votifer::Key.from_key_file(private_key_file)
end

#listen ⇒ Object 



16
17
18
19
20
21
22
23
 
# File 'lib/votifier/server.rb', line 16

def listen
  server = TCPServer.open(8193)  # Socket to listen on port
  loop {                         # Servers run forever
    Thread.start(server.accept) do |client| # Wait for a client to connect
      handle_connection(client)
    end
  }
end

#parse_content(content) ⇒ Object

Raises:



41
42
43
44
45
46
47
48
49
 
# File 'lib/votifier/server.rb', line 41

def parse_content(content)
  raise Error::InvalidVotePacket, "Must be 256 bytes: is #{content.bytesize}" unless content.bytesize == 256
  vote_info_string = decrypt(content)
  raise Error::InvalidVotePacket, 'Must contains newline characters' unless vote_info_string.match(/\n/)
  vote_info = vote_info_string.split("\n")
  raise Error::InvalidVotePacket, 'Must contain 5 elements or more' unless vote_info.size >= 5
  raise Error::InvalidVotePacket, 'Invalid opcode: must be VOTE' unless vote_info[0] == "VOTE"
  vote_info
end