pki: openvpn: T3642: Migrate OpenVPN to PKI and refactor

1 files changed, 215 insertions, 4 deletions

diff --git a/src/migration-scripts/interfaces/22-to-23 b/src/migration-scripts/interfaces/22-to-23
index 3fd5998a0..93ce9215f 100755
--- a/src/migration-scripts/interfaces/22-to-23
+++ b/src/migration-scripts/interfaces/22-to-23
@@ -21,12 +21,34 @@ import os
 import sys
 from vyos.configtree import ConfigTree
 from vyos.pki import load_certificate
+from vyos.pki import load_crl
+from vyos.pki import load_dh_parameters
 from vyos.pki import load_private_key
 from vyos.pki import encode_certificate
+from vyos.pki import encode_dh_parameters
 from vyos.pki import encode_private_key
+from vyos.util import run
 
 def wrapped_pem_to_config_value(pem):
-    return "".join(pem.strip().split("\n")[1:-1])
+    out = []
+    for line in pem.strip().split("\n"):
+        if not line or line.startswith("-----") or line[0] == '#':
+            continue
+        out.append(line)
+    return "".join(out)
+
+def read_file_for_pki(config_auth_path):
+    full_path = os.path.join(AUTH_DIR, config_auth_path)
+    output = None
+
+    if os.path.isfile(full_path):
+        if not os.access(full_path, os.R_OK):
+            run(f'sudo chmod 644 {full_path}')
+
+        with open(full_path, 'r') as f:
+            output = f.read()
+
+    return output
 
 if (len(sys.argv) < 1):
     print("Must specify file name!")
@@ -39,6 +61,198 @@ with open(file_name, 'r') as f:
 
 config = ConfigTree(config_file)
 
+AUTH_DIR = '/config/auth'
+pki_base = ['pki']
+
+# OpenVPN
+base = ['interfaces', 'openvpn']
+
+if config.exists(base):
+    for interface in config.list_nodes(base):
+        x509_base = base + [interface, 'tls']
+        pki_name = f'openvpn_{interface}'
+
+        if config.exists(base + [interface, 'shared-secret-key-file']):
+            if not config.exists(pki_base + ['openvpn', 'shared-secret']):
+                config.set(pki_base + ['openvpn', 'shared-secret'])
+                config.set_tag(pki_base + ['openvpn', 'shared-secret'])
+
+            key_file = config.return_value(base + [interface, 'shared-secret-key-file'])
+            key = read_file_for_pki(key_file)
+            key_pki_name = f'{pki_name}_shared'
+
+            if key:
+                config.set(pki_base + ['openvpn', 'shared-secret', key_pki_name, 'key'], value=wrapped_pem_to_config_value(key))
+                config.set(pki_base + ['openvpn', 'shared-secret', key_pki_name, 'version'], value='1')
+                config.set(base + [interface, 'shared-secret-key'], value=key_pki_name)
+            else:
+                print(f'Failed to migrate shared-secret-key on openvpn interface {interface}')
+
+            config.delete(base + [interface, 'shared-secret-key-file'])
+
+        if not config.exists(base + [interface, 'tls']):
+            continue
+
+        if config.exists(base + [interface, 'tls', 'auth-file']):
+            if not config.exists(pki_base + ['openvpn', 'shared-secret']):
+                config.set(pki_base + ['openvpn', 'shared-secret'])
+                config.set_tag(pki_base + ['openvpn', 'shared-secret'])
+
+            key_file = config.return_value(base + [interface, 'tls', 'auth-file'])
+            key = read_file_for_pki(key_file)
+            key_pki_name = f'{pki_name}_auth'
+
+            if key:
+                config.set(pki_base + ['openvpn', 'shared-secret', key_pki_name, 'key'], value=wrapped_pem_to_config_value(key))
+                config.set(pki_base + ['openvpn', 'shared-secret', key_pki_name, 'version'], value='1')
+                config.set(base + [interface, 'tls', 'auth-key'], value=key_pki_name)
+            else:
+                print(f'Failed to migrate auth-key on openvpn interface {interface}')
+
+            config.delete(base + [interface, 'tls', 'auth-file'])
+
+        if config.exists(base + [interface, 'tls', 'crypt-file']):
+            if not config.exists(pki_base + ['openvpn', 'shared-secret']):
+                config.set(pki_base + ['openvpn', 'shared-secret'])
+                config.set_tag(pki_base + ['openvpn', 'shared-secret'])
+
+            key_file = config.return_value(base + [interface, 'tls', 'crypt-file'])
+            key = read_file_for_pki(key_file)
+            key_pki_name = f'{pki_name}_crypt'
+
+            if key:
+                config.set(pki_base + ['openvpn', 'shared-secret', key_pki_name, 'key'], value=wrapped_pem_to_config_value(key))
+                config.set(pki_base + ['openvpn', 'shared-secret', key_pki_name, 'version'], value='1')
+                config.set(base + [interface, 'tls', 'crypt-key'], value=key_pki_name)
+            else:
+                print(f'Failed to migrate crypt-key on openvpn interface {interface}')
+
+            config.delete(base + [interface, 'tls', 'crypt-file'])
+
+        if config.exists(x509_base + ['ca-cert-file']):
+            if not config.exists(pki_base + ['ca']):
+                config.set(pki_base + ['ca'])
+                config.set_tag(pki_base + ['ca'])
+
+            cert_file = config.return_value(x509_base + ['ca-cert-file'])
+            cert_path = os.path.join(AUTH_DIR, cert_file)
+            cert = None
+
+            if os.path.isfile(cert_path):
+                if not os.access(cert_path, os.R_OK):
+                    run(f'sudo chmod 644 {cert_path}')
+
+                with open(cert_path, 'r') as f:
+                    cert_data = f.read()
+                    cert = load_certificate(cert_data, wrap_tags=False)
+
+            if cert:
+                cert_pem = encode_certificate(cert)
+                config.set(pki_base + ['ca', pki_name, 'certificate'], value=wrapped_pem_to_config_value(cert_pem))
+                config.set(x509_base + ['ca-certificate'], value=pki_name)
+            else:
+                print(f'Failed to migrate CA certificate on openvpn interface {interface}')
+
+            config.delete(x509_base + ['ca-cert-file'])
+
+        if config.exists(x509_base + ['crl-file']):
+            if not config.exists(pki_base + ['ca']):
+                config.set(pki_base + ['ca'])
+                config.set_tag(pki_base + ['ca'])
+
+            crl_file = config.return_value(x509_base + ['crl-file'])
+            crl_path = os.path.join(AUTH_DIR, crl_file)
+            crl = None
+
+            if os.path.isfile(crl_path):
+                if not os.access(crl_path, os.R_OK):
+                    run(f'sudo chmod 644 {crl_path}')
+
+                with open(crl_path, 'r') as f:
+                    crl_data = f.read()
+                    crl = load_crl(crl_data, wrap_tags=False)
+
+            if crl:
+                crl_pem = encode_certificate(crl)
+                config.set(pki_base + ['ca', pki_name, 'crl'], value=wrapped_pem_to_config_value(crl_pem))
+            else:
+                print(f'Failed to migrate CRL on openvpn interface {interface}')
+
+            config.delete(x509_base + ['crl-file'])
+
+        if config.exists(x509_base + ['cert-file']):
+            if not config.exists(pki_base + ['certificate']):
+                config.set(pki_base + ['certificate'])
+                config.set_tag(pki_base + ['certificate'])
+
+            cert_file = config.return_value(x509_base + ['cert-file'])
+            cert_path = os.path.join(AUTH_DIR, cert_file)
+            cert = None
+
+            if os.path.isfile(cert_path):
+                if not os.access(cert_path, os.R_OK):
+                    run(f'sudo chmod 644 {cert_path}')
+
+                with open(cert_path, 'r') as f:
+                    cert_data = f.read()
+                    cert = load_certificate(cert_data, wrap_tags=False)
+
+            if cert:
+                cert_pem = encode_certificate(cert)
+                config.set(pki_base + ['certificate', pki_name, 'certificate'], value=wrapped_pem_to_config_value(cert_pem))
+                config.set(x509_base + ['certificate'], value=pki_name)
+            else:
+                print(f'Failed to migrate certificate on openvpn interface {interface}')
+
+            config.delete(x509_base + ['cert-file'])
+
+        if config.exists(x509_base + ['key-file']):
+            key_file = config.return_value(x509_base + ['key-file'])
+            key_path = os.path.join(AUTH_DIR, key_file)
+            key = None
+
+            if os.path.isfile(key_path):
+                if not os.access(key_path, os.R_OK):
+                    run(f'sudo chmod 644 {key_path}')
+
+                with open(key_path, 'r') as f:
+                    key_data = f.read()
+                    key = load_private_key(key_data, passphrase=None, wrap_tags=False)
+
+            if key:
+                key_pem = encode_private_key(key, passphrase=None)
+                config.set(pki_base + ['certificate', pki_name, 'private', 'key'], value=wrapped_pem_to_config_value(key_pem))
+            else:
+                print(f'Failed to migrate private key on openvpn interface {interface}')
+                
+            config.delete(x509_base + ['key-file'])
+
+        if config.exists(x509_base + ['dh-file']):
+            if not config.exists(pki_base + ['dh']):
+                config.set(pki_base + ['dh'])
+                config.set_tag(pki_base + ['dh'])
+
+            dh_file = config.return_value(x509_base + ['dh-file'])
+            dh_path = os.path.join(AUTH_DIR, dh_file)
+            dh = None
+
+            if os.path.isfile(dh_path):
+                if not os.access(dh_path, os.R_OK):
+                    run(f'sudo chmod 644 {dh_path}')
+
+                with open(dh_path, 'r') as f:
+                    dh_data = f.read()
+                    dh = load_dh_parameters(dh_data, wrap_tags=False)
+
+            if dh:
+                dh_pem = encode_dh_parameters(dh)
+                config.set(pki_base + ['dh', pki_name, 'parameters'], value=wrapped_pem_to_config_value(dh_pem))
+                config.set(x509_base + ['dh-params'], value=pki_name)
+            else:
+                print(f'Failed to migrate DH parameters on openvpn interface {interface}')
+
+            config.delete(x509_base + ['dh-file'])
+
 # Wireguard
 base = ['interfaces', 'wireguard']
 
@@ -67,9 +281,6 @@ if config.exists(base):
 base = ['interfaces', 'ethernet']
 
 if config.exists(base):
-    AUTH_DIR = '/config/auth'
-    pki_base = ['pki']
-
     for interface in config.list_nodes(base):
         if not config.exists(base + [interface, 'eapol']):
             continue