From 3d1b34bf715e594aa4a013d409bfcc5a4c4ad99c Mon Sep 17 00:00:00 2001 From: Andrew Gunnerson Date: Wed, 16 Feb 2022 17:46:06 -0500 Subject: pki: eapol: T4245: Add full CA and client cert chains to wpa_supplicant PEM files This commit updates the eapol code so that it writes the full certificate chains for both the specified CA and the client certificate to `_ca.pem` and `_cert.pem`, respectively. The full CA chain is necessary for validating the incoming server certificate when it is signed by an intermediate CA and the intermediate CA cert is not included in the EAP-TLS ServerHello. In this scenario, wpa_supplicant needs to have both the intermediate CA and the root CA in its `ca_file`. Similarly, the full client certificate chain is needed when the ISP expects/requires that the client (wpa_supplicant) sends the client cert + the intermediate CA (or even + the root CA) as part of the EAP-TLS ClientHello. Signed-off-by: Andrew Gunnerson --- src/conf_mode/interfaces-ethernet.py | 18 +++++++++++++++--- 1 file changed, 15 insertions(+), 3 deletions(-) (limited to 'src') diff --git a/src/conf_mode/interfaces-ethernet.py b/src/conf_mode/interfaces-ethernet.py index ab8d58f81..2a8a126f2 100755 --- a/src/conf_mode/interfaces-ethernet.py +++ b/src/conf_mode/interfaces-ethernet.py @@ -32,7 +32,9 @@ from vyos.configverify import verify_vlan_config from vyos.configverify import verify_vrf from vyos.ethtool import Ethtool from vyos.ifconfig import EthernetIf -from vyos.pki import wrap_certificate +from vyos.pki import find_chain +from vyos.pki import encode_certificate +from vyos.pki import load_certificate from vyos.pki import wrap_private_key from vyos.template import render from vyos.util import call @@ -159,7 +161,14 @@ def generate(ethernet): cert_name = ethernet['eapol']['certificate'] pki_cert = ethernet['pki']['certificate'][cert_name] - write_file(cert_file_path, wrap_certificate(pki_cert['certificate'])) + loaded_pki_cert = load_certificate(pki_cert['certificate']) + loaded_ca_certs = {load_certificate(c['certificate']) + for c in ethernet['pki']['ca'].values()} + + cert_full_chain = find_chain(loaded_pki_cert, loaded_ca_certs) + + write_file(cert_file_path, + '\n'.join(encode_certificate(c) for c in cert_full_chain)) write_file(cert_key_path, wrap_private_key(pki_cert['private']['key'])) if 'ca_certificate' in ethernet['eapol']: @@ -167,8 +176,11 @@ def generate(ethernet): ca_cert_name = ethernet['eapol']['ca_certificate'] pki_ca_cert = ethernet['pki']['ca'][ca_cert_name] + loaded_ca_cert = load_certificate(pki_ca_cert['certificate']) + ca_full_chain = find_chain(loaded_ca_cert, loaded_ca_certs) + write_file(ca_cert_file_path, - wrap_certificate(pki_ca_cert['certificate'])) + '\n'.join(encode_certificate(c) for c in ca_full_chain)) else: # delete configuration on interface removal if os.path.isfile(wpa_suppl_conf.format(**ethernet)): -- cgit v1.2.3