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ha: Streamline handling of conditions and extensions

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Automatically takes care of sending/receiving newly added extensions and
conditions.

Signed-off-by: Thomas Egerer <[email protected]>
This commit is contained in:
Thomas Egerer
2022-02-15 15:27:13 +01:00
committed by Tobias Brunner
parent 801bb8536a
commit d6879ef984
2 changed files with 45 additions and 62 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/libcharon/plugins/ha/ha_dispatcher.c
+23 -28
View File
@@ -297,23 +297,35 @@ static void process_ike_add(private_ha_dispatcher_t *this, ha_message_t *message
}
/**
* Apply a condition flag to the IKE_SA if it is in set
* Apply all set conditions to the IKE_SA
*/
static void set_condition(ike_sa_t *ike_sa, ike_condition_t set,
ike_condition_t flag)
static void set_conditions(ike_sa_t *ike_sa, ike_condition_t conditions)
{
ike_sa->set_condition(ike_sa, flag, flag & set);
ike_condition_t i;
for (i = 0; i < sizeof(i) * 8; ++i)
{
ike_condition_t cond = (1 << i);
ike_sa->set_condition(ike_sa, cond, (conditions & cond) != 0);
}
}
/**
* Apply a extension flag to the IKE_SA if it is in set
* Apply all enabled extensions to the IKE_SA
*/
static void set_extension(ike_sa_t *ike_sa, ike_extension_t set,
ike_extension_t flag)
static void set_extensions(ike_sa_t *ike_sa, ike_extension_t extensions)
{
if (flag & set)
ike_extension_t i;
for (i = 0; i < sizeof(i) * 8; ++i)
{
ike_sa->enable_extension(ike_sa, flag);
ike_extension_t ext = (1 << i);
if (extensions & ext)
{
ike_sa->enable_extension(ike_sa, ext);
}
}
}
@@ -403,27 +415,10 @@ static void process_ike_update(private_ha_dispatcher_t *this,
}
break;
case HA_EXTENSIONS:
set_extension(ike_sa, value.u32, EXT_NATT);
set_extension(ike_sa, value.u32, EXT_MOBIKE);
set_extension(ike_sa, value.u32, EXT_HASH_AND_URL);
set_extension(ike_sa, value.u32, EXT_MULTIPLE_AUTH);
set_extension(ike_sa, value.u32, EXT_STRONGSWAN);
set_extension(ike_sa, value.u32, EXT_EAP_ONLY_AUTHENTICATION);
set_extension(ike_sa, value.u32, EXT_MS_WINDOWS);
set_extension(ike_sa, value.u32, EXT_XAUTH);
set_extension(ike_sa, value.u32, EXT_DPD);
set_extensions(ike_sa, value.u32);
break;
case HA_CONDITIONS:
set_condition(ike_sa, value.u32, COND_NAT_ANY);
set_condition(ike_sa, value.u32, COND_NAT_HERE);
set_condition(ike_sa, value.u32, COND_NAT_THERE);
set_condition(ike_sa, value.u32, COND_NAT_FAKE);
set_condition(ike_sa, value.u32, COND_EAP_AUTHENTICATED);
set_condition(ike_sa, value.u32, COND_CERTREQ_SEEN);
set_condition(ike_sa, value.u32, COND_ORIGINAL_INITIATOR);
set_condition(ike_sa, value.u32, COND_STALE);
set_condition(ike_sa, value.u32, COND_INIT_CONTACT_SEEN);
set_condition(ike_sa, value.u32, COND_XAUTH_AUTHENTICATED);
set_conditions(ike_sa, value.u32);
break;
default:
break;
src/libcharon/plugins/ha/ha_ike.c
+22 -34
View File
@@ -47,27 +47,37 @@ struct private_ha_ike_t {
};
/**
* Return condition if it is set on ike_sa
* Copy conditions of IKE_SA to message as HA_CONDITIONS attribute
*/
static ike_condition_t copy_condition(ike_sa_t *ike_sa, ike_condition_t cond)
static void copy_conditions(ha_message_t *m, ike_sa_t *ike_sa)
{
if (ike_sa->has_condition(ike_sa, cond))
ike_condition_t i, conditions = 0;
for (i = 0; i < sizeof(i) * 8; ++i)
{
return cond;
ike_condition_t cond = (1 << i);
conditions |= (ike_sa->has_condition(ike_sa, cond) ? cond : 0);
}
return 0;
m->add_attribute(m, HA_CONDITIONS, (uint32_t)conditions);
}
/**
* Return extension if it is supported by peers IKE_SA
* Copy extensions of IKE_SA to message as HA_EXTENSIONS attribute
*/
static ike_extension_t copy_extension(ike_sa_t *ike_sa, ike_extension_t ext)
static void copy_extensions(ha_message_t *m, ike_sa_t *ike_sa)
{
if (ike_sa->supports_extension(ike_sa, ext))
ike_extension_t i, extensions = 0;
for (i = 0; i < sizeof(i) * 8; ++i)
{
return ext;
ike_extension_t ext = (1 << i);
extensions |= (ike_sa->supports_extension(ike_sa, ext) ? ext : 0);
}
return 0;
m->add_attribute(m, HA_EXTENSIONS, (uint32_t)extensions);
}
METHOD(listener_t, ike_keys, bool,
@@ -172,34 +182,12 @@ METHOD(listener_t, ike_updown, bool,
{
enumerator_t *enumerator;
peer_cfg_t *peer_cfg;
uint32_t extension, condition;
host_t *addr;
ike_sa_id_t *id;
identification_t *eap_id;
peer_cfg = ike_sa->get_peer_cfg(ike_sa);
condition = copy_condition(ike_sa, COND_NAT_ANY)
| copy_condition(ike_sa, COND_NAT_HERE)
| copy_condition(ike_sa, COND_NAT_THERE)
| copy_condition(ike_sa, COND_NAT_FAKE)
| copy_condition(ike_sa, COND_EAP_AUTHENTICATED)
| copy_condition(ike_sa, COND_CERTREQ_SEEN)
| copy_condition(ike_sa, COND_ORIGINAL_INITIATOR)
| copy_condition(ike_sa, COND_STALE)
| copy_condition(ike_sa, COND_INIT_CONTACT_SEEN)
| copy_condition(ike_sa, COND_XAUTH_AUTHENTICATED);
extension = copy_extension(ike_sa, EXT_NATT)
| copy_extension(ike_sa, EXT_MOBIKE)
| copy_extension(ike_sa, EXT_HASH_AND_URL)
| copy_extension(ike_sa, EXT_MULTIPLE_AUTH)
| copy_extension(ike_sa, EXT_STRONGSWAN)
| copy_extension(ike_sa, EXT_EAP_ONLY_AUTHENTICATION)
| copy_extension(ike_sa, EXT_MS_WINDOWS)
| copy_extension(ike_sa, EXT_XAUTH)
| copy_extension(ike_sa, EXT_DPD);
id = ike_sa->get_id(ike_sa);
m = ha_message_create(HA_IKE_UPDATE);
@@ -213,8 +201,8 @@ METHOD(listener_t, ike_updown, bool,
}
m->add_attribute(m, HA_LOCAL_ADDR, ike_sa->get_my_host(ike_sa));
m->add_attribute(m, HA_REMOTE_ADDR, ike_sa->get_other_host(ike_sa));
m->add_attribute(m, HA_CONDITIONS, condition);
m->add_attribute(m, HA_EXTENSIONS, extension);
copy_conditions(m, ike_sa);
copy_extensions(m, ike_sa);
m->add_attribute(m, HA_CONFIG_NAME, peer_cfg->get_name(peer_cfg));
enumerator = ike_sa->create_peer_address_enumerator(ike_sa);
while (enumerator->enumerate(enumerator, (void**)&addr))