From eabc5f1c2e5bfe548cb3d62f2f85f8d61be29b92 Mon Sep 17 00:00:00 2001
From: Simon <965089+sarthurdev@users.noreply.github.com>
Date: Fri, 28 May 2021 16:35:12 +0200
Subject: ipsec: T2816: IPSec python rework, includes DMVPN and VTI support

---
 data/templates/ipsec/ike-esp.tmpl       |  32 +++++++++
 data/templates/ipsec/ipsec.conf.tmpl    | 118 ++++++++++++++++++++++++++++++++
 data/templates/ipsec/ipsec.secrets.tmpl |  33 ++++++++-
 data/templates/ipsec/swanctl.conf.tmpl  |  54 +++++++++++++++
 4 files changed, 234 insertions(+), 3 deletions(-)
 create mode 100644 data/templates/ipsec/ike-esp.tmpl
 create mode 100644 data/templates/ipsec/swanctl.conf.tmpl

(limited to 'data/templates/ipsec')

diff --git a/data/templates/ipsec/ike-esp.tmpl b/data/templates/ipsec/ike-esp.tmpl
new file mode 100644
index 000000000..deeb8c80d
--- /dev/null
+++ b/data/templates/ipsec/ike-esp.tmpl
@@ -0,0 +1,32 @@
+{% macro conn(ike, ike_ciphers, esp, esp_ciphers) -%}
+{%  if ike %}
+{%      if "key_exchange" in ike %}
+    keyexchange = {{ ike.key_exchange }}
+{%      endif %}
+    ike = {{ ike_ciphers }}
+{%      if "lifetime" in ike %}
+    ikelifetime = {{ ike.lifetime }}s
+{%      endif %}
+    reauth = {{ ike.ikev2_reauth if "ikev2_reauth" in ike else "no" }}
+    closeaction = {{ ike.close_action if "close_action" in ike else "none" }}
+{%      if "dead_peer_detection" in ike %}
+    dpdaction = {{ ike.dead_peer_detection.action }}
+    dpdtimeout = {{ ike.dead_peer_detection.timeout }}
+    dpddelay = {{ ike.dead_peer_detection.interval }}
+{%      endif %}
+{%      if "key_exchange" in ike and ike.key_exchange == "ikev1" and "mode" in ike and ike.mode == "aggressive" %}
+    aggressive = yes
+{%      endif %}
+{%      if "key_exchange" in ike and ike.key_exchange == "ikev2" %}
+    mobike = {{ "yes" if "mobike" not in ike or ike.mobike == "enable" else "no" }}
+{%      endif %}
+{%  endif %}
+{%  if esp %}
+    esp = {{ esp_ciphers }}
+{%      if "lifetime" in esp %}
+    keylife = {{ esp.lifetime }}s
+{%      endif %}
+    compress = {{ 'yes' if "compression" in esp and esp.compression == 'enable' else 'no' }}
+    type = {{ esp.mode if "mode" in esp else "tunnel" }}
+{%  endif %}
+{%- endmacro %}
diff --git a/data/templates/ipsec/ipsec.conf.tmpl b/data/templates/ipsec/ipsec.conf.tmpl
index d0b60765b..75f3de39c 100644
--- a/data/templates/ipsec/ipsec.conf.tmpl
+++ b/data/templates/ipsec/ipsec.conf.tmpl
@@ -1,3 +1,121 @@
+# Created by VyOS - manual changes will be overwritten
+
+{% import 'ipsec/ike-esp.tmpl' as ike_esp %}
+
+config setup
+    charondebug = "{{ charondebug }}"
+    uniqueids = {{ "no" if disable_uniqreqids is defined else "yes" }}
+
+{%  if site_to_site is defined and "peer" in site_to_site -%}
+{%      for peer, peer_conf in site_to_site.peer.items() %}
+{%          set peer_index = loop.index %}
+{%          set peer_ike = ike_group[peer_conf.ike_group] %}
+{%          set peer_esp = esp_group[peer_conf.default_esp_group] if 'default_esp_group' in peer_conf else None %}
+conn peer-{{ peer }}
+{%          if peer_conf.authentication.mode in authby %}
+    authby = {{ authby[peer_conf.authentication.mode] }}
+{%          endif %}
+{%          if peer_conf.authentication.mode == 'x509' %}
+{%              set cert_file = peer_conf.authentication.x509.cert_file %}
+    leftcert = {{ cert_file if cert_file.startswith(x509_path) else (x509_path + cert_file) }}
+    leftsendcert = always
+    rightca = %same
+{%          elif peer_conf.authentication.mode == 'rsa' %}
+    leftsigkey = localhost.pub
+    rightsigkey = {{ peer_conf.authentication.rsa_key_name }}.pub
+{%          endif %}
+    left = {{ peer_conf.local_address if peer_conf.local_address != 'any' else '%defaultroute' }} # dhcp:{{ peer_conf.dhcp_interface if 'dhcp_interface' in peer_conf else 'no' }}
+{%          if "id" in peer_conf.authentication and "use_x509_id" not in peer_conf.authentication %}
+    leftid = "{{ peer_conf.authentication.id }}"
+{%          endif %}
+    right = {{ peer if peer not in ['any', '0.0.0.0'] and peer[0:1] != '@' else '%any' }}
+{%          if "remote_id" in peer_conf.authentication %}
+    rightid = "{{ peer_conf.authentication.remote_id }}"
+{%          elif peer[0:1] == '@' %}
+    rightid = "{{ peer }}"
+{%          endif %}
+    keylife = 3600s
+    rekeymargin = 540s
+{{ ike_esp.conn(peer_ike, ciphers.ike[peer_conf.ike_group], peer_esp, ciphers.esp[peer_conf.default_esp_group] if peer_esp else None) }}
+{%          if "vti" in peer_conf and "bind" in peer_conf.vti %}
+{%              set vti_esp = esp_group[peer_conf.vti.esp_group] if "esp_group" in peer_conf.vti else None %}
+conn peer-{{ peer }}-vti
+    also = peer-{{ peer }}
+    leftsubnet = 0.0.0.0/0
+    leftupdown = "/etc/ipsec.d/vti-up-down {{ peer_conf.vti.bind }}"
+    rightsubnet = 0.0.0.0/0
+    mark = {{ marks[peer_conf.vti.bind] }}
+{{ ike_esp.conn(None, None, vti_esp, ciphers.esp[peer_conf.vti.esp_group] if vti_esp else None) }}
+{%          if peer[0:1] == '@' %}
+    rekey = no
+    auto = add
+    keyingtries = %forever
+{%          else %}
+{%              if 'connection_type' not in peer_conf or peer_conf.connection_type == 'initiate' %}
+    auto = start
+    keyingtries = %forever
+{%              endif %}
+{%              if peer_conf.connection_type == 'respond' %}
+    auto = route
+    keyingtries = 1
+{%              endif %}
+{%          endif %}
+{%          elif "tunnel" in peer_conf %}
+{%              for tunnel_id, tunnel_conf in peer_conf.tunnel.items() %}
+{%                  set tunnel_esp_name = tunnel_conf.esp_group if "esp_group" in tunnel_conf else peer_conf.default_esp_group %}
+{%                  set tunnel_esp = esp_group[tunnel_esp_name] %}
+{%                  set proto = tunnel_conf.protocol if "protocol" in tunnel_conf else '%any' %}
+conn peer-{{ peer }}-tunnel-{{tunnel_id}}
+    also = peer-{{ peer }}
+{%                  if 'mode' not in tunnel_esp or tunnel_esp.mode == 'tunnel' %}
+{%                      if 'local' in tunnel_conf and 'prefix' in tunnel_conf.local %}
+    leftsubnet = {{ tunnel_conf.local.prefix if tunnel_conf.local.prefix != 'any' else '0.0.0.0/0' }}[{{ proto }}/{{ tunnel_conf.local.port if "port" in tunnel_conf.local else '%any' }}]
+{%                      endif %}
+{%                      if 'remote' in tunnel_conf and 'prefix' in tunnel_conf.remote %}
+    rightsubnet = {{ tunnel_conf.remote.prefix if tunnel_conf.remote.prefix != 'any' else '0.0.0.0/0' }}[{{ proto }}/{{ tunnel_conf.remote.port if "port" in tunnel_conf.remote else '%any' }}]
+{%                      endif %}
+{%                  elif tunnel_esp.mode == 'transport' %}
+    leftsubnet = {{ peer_conf.local_address }}[{{ proto }}/{{ tunnel_conf.local.port if "local" in tunnel_conf and "port" in tunnel_conf.local else '%any' }}]
+    rightsubnet = {{ peer }}[{{ proto }}/{{ tunnel_conf.local.port if "local" in tunnel_conf and "port" in tunnel_conf.local else '%any' }}]
+{%                  endif %}
+{%                  if 'esp_group' in tunnel_conf %}
+{{ ike_esp.conn(None, None, tunnel_esp, ciphers.esp[tunnel_esp_name]) }}
+{%                  endif %}
+{%                  if peer[0:1] == '@' %}
+    rekey = no
+    auto = add
+    keyingtries = %forever
+{%                  else %}
+{%                      if 'connection_type' not in peer_conf or peer_conf.connection_type == 'initiate' %}
+    auto = start
+    keyingtries = %forever
+{%                      endif %}
+{%                      if peer_conf.connection_type == 'respond' %}
+    auto = route
+    keyingtries = 1
+{%                      endif %}
+{%                  endif %}
+{%                  if 'passthrough' in tunnel_conf and tunnel_conf.passthrough %}
+conn peer-{{ peer }}-tunnel-{{ tunnel_id }}-passthough
+    left = {{ peer_conf.local_address if peer_conf.local_address != 'any' else '%defaultroute' }}
+    right = {{ peer if peer not in ['any', '0.0.0.0'] and peer[0:1] != '@' else '%any' }}
+    leftsubnet = {{ tunnel_conf.local.prefix }}
+    rightsubnet = {{ tunnel_conf.local.prefix }}
+    type = passthrough
+    authby = never
+    auto = route
+{%                  endif %}
+{%              endfor %}
+{%          endif %}
+{%      endfor %}
+{%-  endif %}
+
+{%  if include_ipsec_conf is defined %}
+include {{ include_ipsec_conf }}
+{%  endif %}
+
+{%  if delim_ipsec_l2tp_begin is defined -%}
 {{delim_ipsec_l2tp_begin}}
 include {{ipsec_ra_conn_file}}
 {{delim_ipsec_l2tp_end}}
+{%-  endif %}
diff --git a/data/templates/ipsec/ipsec.secrets.tmpl b/data/templates/ipsec/ipsec.secrets.tmpl
index 55c010a3b..a1432de57 100644
--- a/data/templates/ipsec/ipsec.secrets.tmpl
+++ b/data/templates/ipsec/ipsec.secrets.tmpl
@@ -1,7 +1,34 @@
+# Created by VyOS - manual changes will be overwritten
+
+{%  if site_to_site is defined and "peer" in site_to_site %}
+{%      set ns = namespace(local_key_set=False) %}
+{%      for peer, peer_conf in site_to_site.peer.items() %}
+{%          if peer_conf.authentication.mode == 'pre-shared-secret' %}
+{{ (peer_conf.local_address if "local_address" in peer_conf else "%any") ~
+    (" " ~ peer) ~
+    ((" " ~ peer_conf.authentication.id) if "id" in peer_conf.authentication else "") ~
+    ((" " ~ peer_conf.authentication.remote_id) if "remote_id" in peer_conf.authentication else "")
+}} : PSK "{{ peer_conf.authentication.pre_shared_secret }}" # dhcp:{{ peer_conf.dhcp_interface if 'dhcp_interface' in peer_conf else 'no' }}
+{%          elif peer_conf.authentication.mode == 'x509' %}
+{%              set key_file = peer_conf.authentication.x509.key.file %}
+: RSA {{ key_file if key_file.startswith(x509_path) else (x509_path + key_file) }}{% if "password" in peer_conf.authentication.x509.key and peer_conf.authentication.x509.key.password %} "{{ peer_conf.authentication.x509.key.password}}"{% endif %}
+{%          elif peer_conf.authentication.mode == 'rsa' and not ns.local_key_set %}
+{%              set ns.local_key_set = True %}
+: RSA {{ rsa_local_key }}
+{%          endif %}
+{%      endfor %}
+{%  endif %}
+
+{%  if include_ipsec_secrets is defined %}
+include {{ include_ipsec_secrets }}
+{%  endif %}
+
+{%  if delim_ipsec_l2tp_begin is defined %}
 {{delim_ipsec_l2tp_begin}}
-{% if ipsec_l2tp_auth_mode == 'pre-shared-secret' %}
+{%      if ipsec_l2tp_auth_mode == 'pre-shared-secret' %}
 {{outside_addr}} %any : PSK "{{ipsec_l2tp_secret}}"
-{% elif ipsec_l2tp_auth_mode == 'x509' %}
+{%      elif ipsec_l2tp_auth_mode == 'x509' %}
 : RSA {{server_key_file_copied}}
-{% endif%}
+{%      endif %}
 {{delim_ipsec_l2tp_end}}
+{%  endif %}
diff --git a/data/templates/ipsec/swanctl.conf.tmpl b/data/templates/ipsec/swanctl.conf.tmpl
new file mode 100644
index 000000000..0ce703f20
--- /dev/null
+++ b/data/templates/ipsec/swanctl.conf.tmpl
@@ -0,0 +1,54 @@
+# Created by VyOS - manual changes will be overwritten
+
+{%  if profile is defined %}
+connections {
+{%      for name, profile_conf in profile.items() if "bind" in profile_conf and "tunnel" in profile_conf.bind %}
+{%          set dmvpn_ike = ike_group[profile_conf.ike_group] %}
+{%          set dmvpn_esp = esp_group[profile_conf.esp_group] %}
+{%          for interface in profile_conf.bind.tunnel %}
+    dmvpn-{{ name }}-{{ interface }} {
+        proposals = {{ ciphers.ike[profile_conf.ike_group][:-1] }}
+        version = {{ dmvpn_ike.key_exchange[4:] if "key_exchange" in dmvpn_ike else "0" }}
+        rekey_time = {{ dmvpn_ike.lifetime if 'lifetime' in dmvpn_ike else '28800' }}s
+        keyingtries = 0
+{%              if profile_conf.authentication.mode == 'pre-shared-secret' %}
+        local {
+            auth = psk
+        }
+        remote {
+            auth = psk
+        }
+{%              endif %}
+        children {
+            dmvpn {
+                esp_proposals = {{ ciphers.esp[profile_conf.esp_group][:-1] }}
+                rekey_time = {{ dmvpn_esp.lifetime if 'lifetime' in dmvpn_esp else '3600' }}s
+                rand_time = 540s
+                local_ts = dynamic[gre]
+                remote_ts = dynamic[gre]
+                mode = {{ dmvpn_esp.mode if "mode" in dmvpn_esp else "transport" }}
+{%              if 'dead_peer_detection' in dmvpn_ike and 'action' in dmvpn_ike.dead_peer_detection %}
+                dpd_action = {{ dmvpn_ike.dead_peer_detection.action }}
+{%              endif %}
+{%              if 'compression' in dmvpn_esp and dmvpn_esp['compression'] == 'enable' %}
+                ipcomp = yes
+{%              endif %}
+            }
+        }
+    }
+{%          endfor %}
+{%      endfor %}
+}
+
+secrets {
+{%      for name, profile_conf in profile.items() if "bind" in profile_conf and "tunnel" in profile_conf.bind %}
+{%          if profile_conf.authentication.mode == 'pre-shared-secret' %}
+{%              for interface in profile_conf.bind.tunnel %}
+    ike-dmvpn-{{ interface }} {
+        secret = {{ profile_conf.authentication.pre_shared_secret }}
+    }
+{%              endfor %}
+{%          endif %}
+{%      endfor %}
+}
+{%  endif %}
-- 
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