#!/usr/bin/env python

# List Cryptech git repository URLs by scraping them from the
# automatically generated Trac page.  Yes, we know too much about how
# the generation script and Trac format this page, c'est la vie.

from urllib import urlopen
from xml.etree.ElementTree import ElementTree
from tempfile import NamedTemporaryFile
from os import environ, fchmod

url = "https://wiki.cryptech.is/wiki/GitRepositories"

cacert = '''\
-----BEGIN CERTIFICATE-----
MIIERzCCAy+gAwIBAgIBADANBgkqhkiG9w0BAQUFADB1MQswCQYDVQQGEwJVUzEL
MAkGA1UECBMCTUExEDAOBgNVBAcTB1JlYWRpbmcxITAfBgNVBAoTGEdydW5jaHdl
YXRoZXIgQXNzb2NpYXRlczEkMCIGCSqGSIb3DQEJARYVcG9zdG1hc3RlckBoYWN0
cm4ubmV0MCAXDTEwMDkyNTA1MzQ0MloYDzIxMDkwOTI1MDUzNDQyWjB1MQswCQYD
VQQGEwJVUzELMAkGA1UECBMCTUExEDAOBgNVBAcTB1JlYWRpbmcxITAfBgNVBAoT
GEdydW5jaHdlYXRoZXIgQXNzb2NpYXRlczEkMCIGCSqGSIb3DQEJARYVcG9zdG1h
c3RlckBoYWN0cm4ubmV0MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA
wf723VEaWozuyJCytEgFkEMXDd17RTChb4RCpqFrlswbKEk4/Vw7IvBeLYNfl5F8
1hx6ca7CU4qD+4tVkanJ7dJhT9a1jWPKjx/Xz8rpZBSDzgiDZNlgX4giDHjG3Ju8
QcT9Elpx4SEBxeaVEl2AXXsShv1PrSpCt9WUdS+0NQkA7z3cXASNPOBFoITM37pC
21nuQuocpjFTaGXw5s3/FhVgcKSUHmQN5UdYK5N2w7pcn7UV2v92UFYSG9cEjQL5
DfPqzJeLemzmUl+XBqSfY/gPCyJdAPOudflnFyptVv3BrmMQYEyJBeRnt2o5aYWd
q1w2wB2HPsEglm1K19gEoQIDAQABo4HfMIHcMAwGA1UdEwQFMAMBAf8wCwYDVR0P
BAQDAgEGMB0GA1UdDgQWBBQkrUZV1MeYpBcTnpsuT60UPRjCZjCBnwYDVR0jBIGX
MIGUgBQkrUZV1MeYpBcTnpsuT60UPRjCZqF5pHcwdTELMAkGA1UEBhMCVVMxCzAJ
BgNVBAgTAk1BMRAwDgYDVQQHEwdSZWFkaW5nMSEwHwYDVQQKExhHcnVuY2h3ZWF0
aGVyIEFzc29jaWF0ZXMxJDAiBgkqhkiG9w0BCQEWFXBvc3RtYXN0ZXJAaGFjdHJu
Lm5ldIIBADANBgkqhkiG9w0BAQUFAAOCAQEAMeBzm4x6hlwbcrR8AcjSP4S/8+pW
4WsmkuKlZMyP/E4rc2DpVBi9WRnLtQoQ+FDU47VkG1D97i+HYx1Ky7W8oU4YB3Xr
ptoAenVmiQOVnbMluuQlxBa8JbOizt+BzL0NJEC6gHvCYT5SmFFsJgXBQZNPpRJb
cDzuilf3b6vCFtRL+hD75VFLkljQWUWt59cNPGhtBItsq3q72LZ2ftPgk9ufC2h3
whlvaaZldSFGnPRcFgXYYUootSh0yUW2lIHn52s/tPRN6XXnrdz+cLUCCchSkPOi
Q9q/UFgaXUetsqlb56PINOrLZUpAfqC4xFBVVo2oI0ubFq173QlATQpn/w==
-----END CERTIFICATE-----
'''

try:
  ssl_cert_file = NamedTemporaryFile("w")
  ssl_cert_file.write(cacert)
  ssl_cert_file.flush()
  try:
    fchmod(ssl_cert_file.fileno(), 0600)
  except:
    pass
  environ["SSL_CERT_FILE"]  = ssl_cert_file.name # OpenSSL looks for this
  environ["GIT_SSL_CAINFO"] = ssl_cert_file.name # Git looks for this

  for x in ElementTree(file = urlopen(url)).iter("{http://www.w3.org/1999/xhtml}tt"):
    if x.text.startswith("https://git.cryptech.is/") and x.text.endswith(".git"):
      print x.text

finally:
  ssl_cert_file.close()