1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
|
require 'nickserver/hkp/source'
require 'nickserver/couch_db/source'
module Nickserver
class RequestHandler
class Request
def initialize(params, headers)
@params = params || {}
@headers = headers
end
def email
param("address")
end
def fingerprint
param("fingerprint")
end
def domain
host_header = headers['Host']
raise MissingHostHeader if host_header.nil?
host_header.split(':')[0].strip.sub(/^nicknym\./, '')
end
protected
def param(key)
params[key] && params[key].first
end
attr_reader :params, :headers
end
def initialize(responder, adapter)
@responder = responder
@adapter = adapter
end
def respond_to(params, headers)
request = Request.new params, headers
if request.email
by_email(request)
elsif request.fingerprint
by_fingerprint(request)
else
send_not_found
end
rescue RuntimeError => exc
puts "Error: #{exc}"
puts exc.backtrace
send_error(exc.to_s)
end
protected
def by_email(request)
email = EmailAddress.new(request.email)
if email.invalid?
send_error("Not a valid address")
else
send_key(email, request)
end
end
def by_fingerprint(request)
fingerprint = request.fingerprint
if fingerprint.length == 40 && !fingerprint[/\H/]
source = Nickserver::Hkp::Source.new(adapter)
key_response = source.get_key_by_fingerprint(fingerprint)
send_response key_response.status, key_response.content
else
send_error('Fingerprint invalid: ' + fingerprint)
end
end
def send_key(email, request)
if local_address?(email, request)
source = Nickserver::CouchDB::Source.new(adapter)
else
source = Nickserver::Hkp::Source.new(adapter)
end
response = source.query(email)
send_response response.status, response.content
rescue MissingHostHeader
send_error("HTTP request must include a Host header.")
end
#
# Return true if the user address is for a user of this service provider.
# e.g. if the provider is example.org, then alice@example.org returns true.
#
# If 'domain' is not configured, we rely on the Host header of the HTTP request.
#
def local_address?(email, request)
email.domain?(Config.domain || request.domain)
end
def send_error(msg = "not supported")
send_response 500, "500 #{msg}\n"
end
def send_not_found(msg = "Not Found")
send_response 404, "404 #{msg}\n"
end
def send_response(status = 200, content = '')
responder.respond status, content
end
attr_reader :responder, :adapter
class MissingHostHeader < StandardError
end
end
end
|
