Rezzect/syncplay
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TLS: use fullchain file if available.

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According to RFC 5246, nginx docs etc. we can expect the server certificate (leaf) to be the first one in the fullchain.pem file. This is indeed the case for all Let's Encrypt certs that I've seen so far.

Also adjust mechanism that checks for updated certificates: now consider the most recent timestamp of any supported .pem file.
This commit is contained in:
Tremolo4 2019-06-23 05:14:39 +02:00
parent 06dc9aff5e
commit 45e7860b2c
2 changed files with 29 additions and 10 deletions
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2
syncplay/protocols.py
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@ -688,7 +688,7 @@ class SyncServerProtocol(JSONCommandProtocol):
if "send" in inquiry:
if not self.isLogged() and self._factory.serverAcceptsTLS:
lastEditCertTime = self._factory.checkLastEditCertTime()
if lastEditCertTime is not None and lastEditCertTime != self._factory.lastEditCertTime:
if lastEditCertTime and lastEditCertTime != self._factory.lastEditCertTime:
self._factory.updateTLSContextFactory()
if self._factory.options is not None:
self.sendTLS({"startTLS": "true"})

37
syncplay/server.py
View File

@ -235,15 +235,30 @@ class SyncFactory(Factory):
def _allowTLSconnections(self, path):
try:
privKey = open(path+'/privkey.pem', 'rt').read()
certif = open(path+'/cert.pem', 'rt').read()
chain = open(path+'/chain.pem', 'rt').read()
# load private key
with open(os.path.join(path, 'privkey.pem'), 'rt') as f:
print("TLS: Loading privkey.pem ...")
privKeyPySSL = crypto.load_privatekey(crypto.FILETYPE_PEM, f.read())
self.lastEditCertTime = os.path.getmtime(path+'/cert.pem')
# fullchain.pem is expected to contain the server cert as the first
# followed by any required intermediate certs
# if fullchain.pem doesn't exist, we expect cert.pem to contain the server cert
# and chain.pem to contain any additional required intermediate certs
privKeyPySSL = crypto.load_privatekey(crypto.FILETYPE_PEM, privKey)
certifPySSL = crypto.load_certificate(crypto.FILETYPE_PEM, certif)
chainPySSL = [crypto.load_certificate(crypto.FILETYPE_PEM, cert) for cert in self._splitPEMCerts(chain)]
fullchainExists = os.path.isfile(os.path.join(path, 'fullchain.pem'))
chainFile = 'fullchain.pem' if fullchainExists else 'chain.pem'
with open(os.path.join(path, chainFile), 'rt') as f:
print("TLS: Loading %s ..." % chainFile)
chainPySSL = [crypto.load_certificate(crypto.FILETYPE_PEM, cert) for cert in self._splitPEMCerts(f.read())]
if fullchainExists:
certifPySSL = chainPySSL.pop(0)
else:
with open(os.path.join(path, 'cert.pem'), 'rt') as f:
print("TLS: Loading cert.pem ...")
certifPySSL = crypto.load_certificate(crypto.FILETYPE_PEM, f.read())
self.lastEditCertTime = self.checkLastEditCertTime()
cipherListString = "ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:"\
"ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:"\
@ -272,10 +287,14 @@ class SyncFactory(Factory):
print("TLS support is not enabled.")
def checkLastEditCertTime(self):
outTime = 0
try:
outTime = os.path.getmtime(self.certPath+'/cert.pem')
for f in ['privkey.pem', 'cert.pem', 'chain.pem', 'fullchain.pem']:
path = os.path.join(self.certPath, f)
if os.path.isfile(path):
outTime = max(outTime, os.path.getmtime(path))
except:
outTime = None
pass
return outTime
def updateTLSContextFactory(self):