Sha256: 3bff80291f2935f312557672254a623ae10504fd55670713d0238f40fa774ec5
Contents?: true
Size: 1.56 KB
Versions: 8
Compression:
Stored size: 1.56 KB
Contents
require 'uri'
require 'digest/sha1'
module Pingpp
module CertificateBlacklist
BLACKLIST = {
"api.pingxx.com" => [
]
}
# Preflight the SSL certificate presented by the backend. This isn't 100%
# bulletproof, in that we're not actually validating the transport used to
# communicate with Pingpp, merely that the first attempt to does not use a
# revoked certificate.
# Unfortunately the interface to OpenSSL doesn't make it easy to check the
# certificate before sending potentially sensitive data on the wire. This
# approach raises the bar for an attacker significantly.
def self.check_ssl_cert(uri, ca_file)
uri = URI.parse(uri)
sock = TCPSocket.new(uri.host, uri.port)
ctx = OpenSSL::SSL::SSLContext.new
ctx.set_params(:verify_mode => OpenSSL::SSL::VERIFY_PEER,
:ca_file => ca_file)
socket = OpenSSL::SSL::SSLSocket.new(sock, ctx)
socket.connect
certificate = socket.peer_cert.to_der
fingerprint = Digest::SHA1.hexdigest(certificate)
if blacklisted_certs = BLACKLIST[uri.host]
if blacklisted_certs.include?(fingerprint)
raise APIConnectionError.new(
"Invalid server certificate. You tried to connect to a server that" +
"has a revoked SSL certificate, which means we cannot securely send" +
"data to that server. Please email support@pingxx.com if you need" +
"help connecting to the correct API server."
)
end
end
socket.close
return true
end
end
end
Version data entries
8 entries across 8 versions & 1 rubygems