[Pkg-privacy-commits] [torbrowser-launcher] 77/476: first hack at verifying pinned SSL certificate

[Ximin Luo]

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infinity0 pushed a commit to branch debian
in repository torbrowser-launcher.

commit 918044f152596039510cc0da01eb8c380b5e5df0
Author: meejah <meejah at meejah.ca>
Date:   Thu Feb 28 00:40:49 2013 -0700

    first hack at verifying pinned SSL certificate
---
 torbrowser-launcher | 25 +++++++++++++++++++++++--
 torproject.pem      | 38 ++++++++++++++++++++++++++++++++++++++
 2 files changed, 61 insertions(+), 2 deletions(-)

diff --git a/torbrowser-launcher b/torbrowser-launcher
index 498bc66..b15e649 100755
--- a/torbrowser-launcher
+++ b/torbrowser-launcher
@@ -13,6 +13,23 @@ import os, sys, subprocess, locale, urllib2, gobject, time
 from twisted.web.client import Agent, ResponseDone
 from twisted.web.http_headers import Headers
 from twisted.internet.protocol import Protocol
+from twisted.internet.ssl import ClientContextFactory
+
+from OpenSSL.SSL import Context, VERIFY_PEER, VERIFY_FAIL_IF_NO_PEER_CERT
+from OpenSSL.crypto import load_certificate, FILETYPE_PEM
+
+class VerifyTorProjectCert(ClientContextFactory):
+
+    torproject_ca = load_certificate(FILETYPE_PEM, open('torproject.pem', 'r').read())
+
+    def getContext(self, host, port):
+        ctx = ClientContextFactory.getContext(self)
+        ctx.set_verify_depth(0)
+        ctx.set_verify(VERIFY_PEER | VERIFY_FAIL_IF_NO_PEER_CERT, self.verifyHostname)
+        return ctx
+
+    def verifyHostname(self, connection, cert, errno, depth, preverifyOK):
+        return cert.digest('sha256') == self.torproject_ca.digest('sha256')
 
 
 class TorBrowserLauncher:
@@ -321,6 +338,10 @@ class TorBrowserLauncher:
       ## FIXME handle errors
 
 
+  def error(self, f):
+      print "FAIL", f
+
+
   def download(self, name, url, path):
     # initialize the progress bar
     self.progressbar.set_fraction(0) 
@@ -328,13 +349,13 @@ class TorBrowserLauncher:
     self.progressbar.show()
     self.refresh_gtk()
 
-    agent = Agent(reactor)
+    agent = Agent(reactor, VerifyTorProjectCert())
     d = agent.request('GET', url,
                       Headers({'User-Agent': ['torbrowser-launcher']}),
                       None)
 
     self.file_download = open(path, 'w')
-    d.addCallback(self.response_received)
+    d.addCallback(self.response_received).addErrback(self.error)
 
   def download_chunk(self, name):
     # download 10kb a time
diff --git a/torproject.pem b/torproject.pem
new file mode 100644
index 0000000..12cf79b
--- /dev/null
+++ b/torproject.pem
@@ -0,0 +1,38 @@
+-----BEGIN CERTIFICATE-----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+E2UHK5iM17YISRhBPNwi4YL+nf+jo5untE6WgvFYhEH2pwmCSKrIYBdGatbxfw==
+-----END CERTIFICATE-----

-- 
Alioth's /usr/local/bin/git-commit-notice on /srv/git.debian.org/git/pkg-privacy/packages/torbrowser-launcher.git