Migrate all enumerators to venumerate() interface change

src/libcharon/plugins/android_dns/android_dns_handler.c

@@ -182,12 +182,15 @@ METHOD(attribute_handler_t, release, void,
 }
 
 METHOD(enumerator_t, enumerate_dns, bool,
-	enumerator_t *this, configuration_attribute_type_t *type, chunk_t *data)
+	enumerator_t *this, va_list args)
 {
+	configuration_attribute_type_t *type;
+	chunk_t *data;
+
+	VA_ARGS_VGET(args, type, data);
 	*type = INTERNAL_IP4_DNS;
 	*data = chunk_empty;
-	/* stop enumeration */
-	this->enumerate = (void*)return_false;
+	this->venumerate = return_false;
 	return TRUE;
 }
 
@@ -198,7 +201,8 @@ METHOD(attribute_handler_t, create_attribute_enumerator, enumerator_t *,
 	enumerator_t *enumerator;
 
 	INIT(enumerator,
-		.enumerate = (void*)_enumerate_dns,
+		.enumerate = enumerator_enumerate_default,
+		.venumerate = _enumerate_dns,
 		.destroy = (void*)free,
 	);
 	return enumerator;

src/libcharon/plugins/dnscert/dnscert_cred.c

@@ -75,12 +75,15 @@ typedef struct {
 } cert_enumerator_t;
 
 METHOD(enumerator_t, cert_enumerator_enumerate, bool,
-	cert_enumerator_t *this, certificate_t **cert)
+	cert_enumerator_t *this, va_list args)
 {
+	certificate_t **cert;
 	dnscert_t *cur_crt;
 	rr_t *cur_rr;
 	chunk_t certificate;
 
+	VA_ARGS_VGET(args, cert);
+
 	/* Get the next supported CERT using the inner enumerator. */
 	while (this->inner->enumerate(this->inner, &cur_rr))
 	{
@@ -175,7 +178,8 @@ METHOD(credential_set_t, create_cert_enumerator, enumerator_t*,
 
 	INIT(e,
 		.public = {
-			.enumerate = (void*)_cert_enumerator_enumerate,
+			.enumerate = enumerator_enumerate_default,
+			.venumerate = _cert_enumerator_enumerate,
 			.destroy = _cert_enumerator_destroy,
 		},
 		.inner = response->get_rr_set(response)->create_rr_enumerator(

src/libcharon/plugins/eap_radius/eap_radius_provider.c

@@ -404,11 +404,13 @@ typedef struct {
 	attr_t *current;
 } attribute_enumerator_t;
 
-
 METHOD(enumerator_t, attribute_enumerate, bool,
-	attribute_enumerator_t *this, configuration_attribute_type_t *type,
-	chunk_t *data)
+	attribute_enumerator_t *this, va_list args)
 {
+	configuration_attribute_type_t *type;
+	chunk_t *data;
+
+	VA_ARGS_VGET(args, type, data);
 	if (this->current)
 	{
 		destroy_attr(this->current);
@@ -446,7 +448,8 @@ METHOD(attribute_provider_t, create_attribute_enumerator, enumerator_t*,
 
 	INIT(enumerator,
 		.public = {
-			.enumerate = (void*)_attribute_enumerate,
+			.enumerate = enumerator_enumerate_default,
+			.venumerate = _attribute_enumerate,
 			.destroy = _attribute_destroy,
 		},
 		.list = linked_list_create(),

src/libcharon/plugins/eap_sim_file/eap_sim_file_triplets.c

@@ -79,10 +79,8 @@ typedef struct {
 	private_eap_sim_file_triplets_t *this;
 } triplet_enumerator_t;
 
-/**
- * destroy a triplet enumerator
- */
-static void enumerator_destroy(triplet_enumerator_t *e)
+METHOD(enumerator_t, enumerator_destroy, void,
+	triplet_enumerator_t *e)
 {
 	if (e->current)
 	{
@@ -97,13 +95,14 @@ static void enumerator_destroy(triplet_enumerator_t *e)
 	free(e);
 }
 
-/**
- * enumerate through triplets
- */
-static bool enumerator_enumerate(triplet_enumerator_t *e, identification_t **imsi,
-								 char **rand, char **sres, char **kc)
+METHOD(enumerator_t, enumerator_enumerate, bool,
+	triplet_enumerator_t *e, va_list args)
 {
+	identification_t **imsi;
 	triplet_t *triplet;
+	char **rand, **sres, **kc;
+
+	VA_ARGS_VGET(args, imsi, rand, sres, kc);
 
 	if (e->inner->enumerate(e->inner, &triplet))
 	{
@@ -124,12 +123,15 @@ METHOD(eap_sim_file_triplets_t, create_enumerator, enumerator_t*,
 	triplet_enumerator_t *enumerator = malloc_thing(triplet_enumerator_t);
 
 	this->mutex->lock(this->mutex);
-	enumerator->public.enumerate = (void*)enumerator_enumerate;
-	enumerator->public.destroy = (void*)enumerator_destroy;
-	enumerator->inner = this->triplets->create_enumerator(this->triplets);
-	enumerator->current = NULL;
-	enumerator->this = this;
-
+	INIT(enumerator,
+		.public = {
+			.enumerate = enumerator_enumerate_default,
+			.venumerate = _enumerator_enumerate,
+			.destroy = _enumerator_destroy,
+		},
+		.inner = this->triplets->create_enumerator(this->triplets),
+		.this = this,
+	);
 	return &enumerator->public;
 }
 

src/libcharon/plugins/ha/ha_message.c

@@ -331,10 +331,12 @@ typedef struct {
 } attribute_enumerator_t;
 
 METHOD(enumerator_t, attribute_enumerate, bool,
-	attribute_enumerator_t *this, ha_message_attribute_t *attr_out,
-	ha_message_value_t *value)
+	attribute_enumerator_t *this, va_list args)
 {
-	ha_message_attribute_t attr;
+	ha_message_attribute_t attr, *attr_out;
+	ha_message_value_t *value;
+
+	VA_ARGS_VGET(args, attr_out, value);
 
 	if (this->cleanup)
 	{
@@ -602,7 +604,8 @@ METHOD(ha_message_t, create_attribute_enumerator, enumerator_t*,
 
 	INIT(e,
 		.public = {
-			.enumerate = (void*)_attribute_enumerate,
+			.enumerate = enumerator_enumerate_default,
+			.venumerate = _attribute_enumerate,
 			.destroy = _enum_destroy,
 		},
 		.buf = chunk_skip(this->buf, 2),

src/libcharon/plugins/ha/ha_tunnel.c

@@ -111,8 +111,12 @@ typedef struct {
 } shared_enum_t;
 
 METHOD(enumerator_t, shared_enumerate, bool,
-	shared_enum_t *this, shared_key_t **key, id_match_t *me, id_match_t *other)
+	shared_enum_t *this, va_list args)
 {
+	shared_key_t **key;
+	id_match_t *me, *other;
+
+	VA_ARGS_VGET(args, key, me, other);
 	if (this->key)
 	{
 		if (me)
@@ -151,7 +155,8 @@ METHOD(ha_creds_t, create_shared_enumerator, enumerator_t*,
 
 	INIT(enumerator,
 		.public = {
-			.enumerate = (void*)_shared_enumerate,
+			.enumerate = enumerator_enumerate_default,
+			.venumerate = _shared_enumerate,
 			.destroy = (void*)free,
 		},
 		.key = this->key,

src/libcharon/plugins/ipseckey/ipseckey_cred.c

@@ -62,13 +62,16 @@ typedef struct {
 } cert_enumerator_t;
 
 METHOD(enumerator_t, cert_enumerator_enumerate, bool,
-	cert_enumerator_t *this, certificate_t **cert)
+	cert_enumerator_t *this, va_list args)
 {
+	certificate_t **cert;
 	ipseckey_t *cur_ipseckey;
 	public_key_t *public;
 	rr_t *cur_rr;
 	chunk_t key;
 
+	VA_ARGS_VGET(args, cert);
+
 	/* Get the next supported IPSECKEY using the inner enumerator. */
 	while (this->inner->enumerate(this->inner, &cur_rr))
 	{
@@ -211,7 +214,8 @@ METHOD(credential_set_t, create_cert_enumerator, enumerator_t*,
 
 	INIT(e,
 		.public = {
-			.enumerate = (void*)_cert_enumerator_enumerate,
+			.enumerate = enumerator_enumerate_default,
+			.venumerate = _cert_enumerator_enumerate,
 			.destroy = _cert_enumerator_destroy,
 		},
 		.inner = rrset->create_rr_enumerator(rrset),

src/libcharon/plugins/kernel_iph/kernel_iph_net.c

@@ -466,9 +466,12 @@ typedef struct {
 } addr_enumerator_t;
 
 METHOD(enumerator_t, addr_enumerate, bool,
-	addr_enumerator_t *this, host_t **host)
+	addr_enumerator_t *this, va_list args)
 {
 	iface_t *entry;
+	host_t **host;
+
+	VA_ARGS_VGET(args, host);
 
 	while (TRUE)
 	{
@@ -523,7 +526,8 @@ METHOD(kernel_net_t, create_address_enumerator, enumerator_t*,
 
 	INIT(enumerator,
 		.public = {
-			.enumerate = (void*)_addr_enumerate,
+			.enumerate = enumerator_enumerate_default,
+			.venumerate = _addr_enumerate,
 			.destroy = _addr_destroy,
 		},
 		.which = which,

src/libcharon/plugins/kernel_netlink/kernel_netlink_net.c

@@ -2165,8 +2165,14 @@ METHOD(enumerator_t, destroy_subnet_enumerator, void,
 }
 
 METHOD(enumerator_t, enumerate_subnets, bool,
-	subnet_enumerator_t *this, host_t **net, uint8_t *mask, char **ifname)
+	subnet_enumerator_t *this, va_list args)
 {
+	host_t **net;
+	uint8_t *mask;
+	char **ifname;
+
+	VA_ARGS_VGET(args, net, mask, ifname);
+
 	if (!this->current)
 	{
 		this->current = this->msg;
@@ -2270,7 +2276,8 @@ METHOD(kernel_net_t, create_local_subnet_enumerator, enumerator_t*,
 
 	INIT(enumerator,
 		.public = {
-			.enumerate = (void*)_enumerate_subnets,
+			.enumerate = enumerator_enumerate_default,
+			.venumerate = _enumerate_subnets,
 			.destroy = _destroy_subnet_enumerator,
 		},
 		.private = this,

src/libcharon/plugins/kernel_pfroute/kernel_pfroute_net.c

@@ -601,9 +601,12 @@ typedef struct {
 } rt_enumerator_t;
 
 METHOD(enumerator_t, rt_enumerate, bool,
-	rt_enumerator_t *this, int *xtype, struct sockaddr **addr)
+	rt_enumerator_t *this, va_list args)
 {
-	int i, type;
+	struct sockaddr **addr;
+	int i, type, *xtype;
+
+	VA_ARGS_VGET(args, xtype, addr);
 
 	if (this->remaining < sizeof(this->addr->sa_len) ||
 		this->remaining < this->addr->sa_len)
@@ -637,7 +640,8 @@ static enumerator_t *create_rt_enumerator(int types, int remaining,
 
 	INIT(this,
 		.public = {
-			.enumerate = (void*)_rt_enumerate,
+			.enumerate = enumerator_enumerate_default,
+			.venumerate = _rt_enumerate,
 			.destroy = (void*)free,
 		},
 		.types = types,
@@ -1789,13 +1793,18 @@ METHOD(enumerator_t, destroy_subnet_enumerator, void,
 }
 
 METHOD(enumerator_t, enumerate_subnets, bool,
-	subnet_enumerator_t *this, host_t **net, uint8_t *mask, char **ifname)
+	subnet_enumerator_t *this, va_list args)
 {
 	enumerator_t *enumerator;
+	host_t **net;
 	struct rt_msghdr *rtm;
 	struct sockaddr *addr;
+	uint8_t *mask;
+	char **ifname;
 	int type;
 
+	VA_ARGS_VGET(args, net, mask, ifname);
+
 	if (!this->current)
 	{
 		this->current = this->buf;
@@ -1888,7 +1897,8 @@ METHOD(kernel_net_t, create_local_subnet_enumerator, enumerator_t*,
 
 	INIT(enumerator,
 		.public = {
-			.enumerate = (void*)_enumerate_subnets,
+			.enumerate = enumerator_enumerate_default,
+			.venumerate = _enumerate_subnets,
 			.destroy = _destroy_subnet_enumerator,
 		},
 		.buf = buf,

src/libcharon/plugins/medcli/medcli_config.c

@@ -223,10 +223,11 @@ typedef struct {
 } peer_enumerator_t;
 
 METHOD(enumerator_t, peer_enumerator_enumerate, bool,
-	peer_enumerator_t *this, peer_cfg_t **cfg)
+	peer_enumerator_t *this, va_list args)
 {
 	char *name, *local_net, *remote_net;
 	chunk_t me, other;
+	peer_cfg_t **cfg;
 	child_cfg_t *child_cfg;
 	auth_cfg_t *auth;
 	peer_cfg_create_t peer = {
@@ -249,6 +250,8 @@ METHOD(enumerator_t, peer_enumerator_enumerate, bool,
 		.mode = MODE_TUNNEL,
 	};
 
+	VA_ARGS_VGET(args, cfg);
+
 	DESTROY_IF(this->current);
 	if (!this->inner->enumerate(this->inner, &name, &me, &other,
 								&local_net, &remote_net))
@@ -295,7 +298,8 @@ METHOD(backend_t, create_peer_cfg_enumerator, enumerator_t*,
 
 	INIT(e,
 		.public = {
-			.enumerate = (void*)_peer_enumerator_enumerate,
+			.enumerate = enumerator_enumerate_default,
+			.venumerate = _peer_enumerator_enumerate,
 			.destroy = _peer_enumerator_destroy,
 		},
 		.ike = this->ike,

src/libcharon/plugins/medcli/medcli_creds.c

@@ -50,10 +50,13 @@ typedef struct {
 } private_enumerator_t;
 
 METHOD(enumerator_t, private_enumerator_enumerate, bool,
-	private_enumerator_t *this, private_key_t **key)
+	private_enumerator_t *this, va_list args)
 {
+	private_key_t **key;
 	chunk_t chunk;
 
+	VA_ARGS_VGET(args, key);
+
 	DESTROY_IF(this->current);
 	while (this->inner->enumerate(this->inner, &chunk))
 	{
@@ -92,7 +95,8 @@ METHOD(credential_set_t, create_private_enumerator, enumerator_t*,
 
 	INIT(e,
 		.public = {
-			.enumerate = (void*)_private_enumerator_enumerate,
+			.enumerate = enumerator_enumerate_default,
+			.venumerate = _private_enumerator_enumerate,
 			.destroy = _private_enumerator_destroy,
 		},
 	);
@@ -123,11 +127,14 @@ typedef struct {
 } cert_enumerator_t;
 
 METHOD(enumerator_t, cert_enumerator_enumerate, bool,
-	cert_enumerator_t *this, certificate_t **cert)
+	cert_enumerator_t *this, va_list args)
 {
+	certificate_t **cert;
 	public_key_t *public;
 	chunk_t chunk;
 
+	VA_ARGS_VGET(args, cert);
+
 	DESTROY_IF(this->current);
 	while (this->inner->enumerate(this->inner, &chunk))
 	{
@@ -180,7 +187,8 @@ METHOD(credential_set_t, create_cert_enumerator, enumerator_t*,
 
 	INIT(e,
 		.public = {
-			.enumerate = (void*)_cert_enumerator_enumerate,
+			.enumerate = enumerator_enumerate_default,
+			.venumerate = _cert_enumerator_enumerate,
 			.destroy = _cert_enumerator_destroy,
 		},
 		.type = key,

src/libcharon/plugins/medsrv/medsrv_creds.c

@@ -52,12 +52,14 @@ typedef struct {
 } cert_enumerator_t;
 
 METHOD(enumerator_t, cert_enumerator_enumerate, bool,
-	cert_enumerator_t *this, certificate_t **cert)
+	cert_enumerator_t *this, va_list args)
 {
-	certificate_t *trusted;
+	certificate_t *trusted, **cert;
 	public_key_t *public;
 	chunk_t chunk;
 
+	VA_ARGS_VGET(args, cert);
+
 	DESTROY_IF(this->current);
 	while (this->inner->enumerate(this->inner, &chunk))
 	{
@@ -110,7 +112,8 @@ METHOD(credential_set_t, create_cert_enumerator, enumerator_t*,
 
 	INIT(e,
 		.public = {
-			.enumerate = (void*)_cert_enumerator_enumerate,
+			.enumerate = enumerator_enumerate_default,
+			.venumerate = _cert_enumerator_enumerate,
 			.destroy = _cert_enumerator_destroy,
 		},
 		.type = key,

src/libcharon/plugins/osx_attr/osx_attr_handler.c

@@ -218,12 +218,15 @@ METHOD(attribute_handler_t, release, void,
 }
 
 METHOD(enumerator_t, enumerate_dns, bool,
-	enumerator_t *this, configuration_attribute_type_t *type, chunk_t *data)
+	enumerator_t *this, va_list args)
 {
+	configuration_attribute_type_t *type;
+	chunk_t *data;
+
+	VA_ARGS_VGET(args, type, data);
 	*type = INTERNAL_IP4_DNS;
 	*data = chunk_empty;
-	/* stop enumeration */
-	this->enumerate = (void*)return_false;
+	this->venumerate = (void*)return_false;
 	return TRUE;
 }
 
@@ -234,7 +237,8 @@ METHOD(attribute_handler_t, create_attribute_enumerator, enumerator_t *,
 	enumerator_t *enumerator;
 
 	INIT(enumerator,
-		.enumerate = (void*)_enumerate_dns,
+		.enumerate = enumerator_enumerate_default,
+		.venumerate = _enumerate_dns,
 		.destroy = (void*)free,
 	);
 	return enumerator;

src/libcharon/plugins/p_cscf/p_cscf_handler.c

@@ -83,9 +83,12 @@ typedef struct {
 } attr_enumerator_t;
 
 METHOD(enumerator_t, enumerate_attrs, bool,
-	attr_enumerator_t *this, configuration_attribute_type_t *type,
-	chunk_t *data)
+	attr_enumerator_t *this, va_list args)
 {
+	configuration_attribute_type_t *type;
+	chunk_t *data;
+
+	VA_ARGS_VGET(args, type, data);
 	if (this->request_ipv4)
 	{
 		*type = P_CSCF_IP4_ADDRESS;
@@ -132,7 +135,8 @@ METHOD(attribute_handler_t, create_attribute_enumerator, enumerator_t *,
 
 	INIT(enumerator,
 		.public = {
-			.enumerate = (void*)_enumerate_attrs,
+			.enumerate = enumerator_enumerate_default,
+			.venumerate = _enumerate_attrs,
 			.destroy = (void*)free,
 		},
 	);

src/libcharon/plugins/resolve/resolve_handler.c

@@ -391,10 +391,13 @@ typedef struct {
 	bool v6;
 } attribute_enumerator_t;
 
-static bool attribute_enumerate(attribute_enumerator_t *this,
-								configuration_attribute_type_t *type,
-								chunk_t *data)
+METHOD(enumerator_t, attribute_enumerate, bool,
+	attribute_enumerator_t *this, va_list args)
 {
+	configuration_attribute_type_t *type;
+	chunk_t *data;
+
+	VA_ARGS_VGET(args, type, data);
 	if (this->v4)
 	{
 		*type = INTERNAL_IP4_DNS;
@@ -443,7 +446,8 @@ METHOD(attribute_handler_t, create_attribute_enumerator, enumerator_t*,
 
 	INIT(enumerator,
 		.public = {
-			.enumerate = (void*)attribute_enumerate,
+			.enumerate = enumerator_enumerate_default,
+			.venumerate = _attribute_enumerate,
 			.destroy = (void*)free,
 		},
 		.v4 = has_host_family(vips, AF_INET),

src/libcharon/plugins/sql/sql_config.c

@@ -504,11 +504,12 @@ typedef struct {
 	ike_cfg_t *current;
 } ike_enumerator_t;
 
-/**
- * Implementation of ike_enumerator_t.public.enumerate
- */
-static bool ike_enumerator_enumerate(ike_enumerator_t *this, ike_cfg_t **cfg)
+METHOD(enumerator_t, ike_enumerator_enumerate, bool,
+	ike_enumerator_t *this, va_list args)
 {
+	ike_cfg_t **cfg;
+
+	VA_ARGS_VGET(args, cfg);
 	DESTROY_IF(this->current);
 	this->current = build_ike_cfg(this->this, this->inner, this->me, this->other);
 	if (this->current)
@@ -519,10 +520,8 @@ static bool ike_enumerator_enumerate(ike_enumerator_t *this, ike_cfg_t **cfg)
 	return FALSE;
 }
 
-/**
- * Implementation of ike_enumerator_t.public.destroy
- */
-static void ike_enumerator_destroy(ike_enumerator_t *this)
+METHOD(enumerator_t, ike_enumerator_destroy, void,
+	ike_enumerator_t *this)
 {
 	DESTROY_IF(this->current);
 	this->inner->destroy(this->inner);
@@ -532,19 +531,22 @@ static void ike_enumerator_destroy(ike_enumerator_t *this)
 METHOD(backend_t, create_ike_cfg_enumerator, enumerator_t*,
 	private_sql_config_t *this, host_t *me, host_t *other)
 {
-	ike_enumerator_t *e = malloc_thing(ike_enumerator_t);
-
-	e->this = this;
-	e->me = me;
-	e->other = other;
-	e->current = NULL;
-	e->public.enumerate = (void*)ike_enumerator_enumerate;
-	e->public.destroy = (void*)ike_enumerator_destroy;
+	ike_enumerator_t *e;
 
+	INIT(e,
+		.public = {
+			.enumerate = enumerator_enumerate_default,
+			.venumerate = _ike_enumerator_enumerate,
+			.destroy = _ike_enumerator_destroy,
+		},
+		.this = this,
+		.me = me,
+		.other = other,
+	);
 	e->inner = this->db->query(this->db,
-			"SELECT id, certreq, force_encap, local, remote "
-			"FROM ike_configs",
-			DB_INT, DB_INT, DB_INT, DB_TEXT, DB_TEXT);
+							   "SELECT id, certreq, force_encap, local, remote "
+							   "FROM ike_configs",
+							   DB_INT, DB_INT, DB_INT, DB_TEXT, DB_TEXT);
 	if (!e->inner)
 	{
 		free(e);
@@ -569,11 +571,12 @@ typedef struct {
 	peer_cfg_t *current;
 } peer_enumerator_t;
 
-/**
- * Implementation of peer_enumerator_t.public.enumerate
- */
-static bool peer_enumerator_enumerate(peer_enumerator_t *this, peer_cfg_t **cfg)
+METHOD(enumerator_t, peer_enumerator_enumerate, bool,
+	peer_enumerator_t *this, va_list args)
 {
+	peer_cfg_t **cfg;
+
+	VA_ARGS_VGET(args, cfg);
 	DESTROY_IF(this->current);
 	this->current = build_peer_cfg(this->this, this->inner, this->me, this->other);
 	if (this->current)
@@ -584,10 +587,8 @@ static bool peer_enumerator_enumerate(peer_enumerator_t *this, peer_cfg_t **cfg)
 	return FALSE;
 }
 
-/**
- * Implementation of peer_enumerator_t.public.destroy
- */
-static void peer_enumerator_destroy(peer_enumerator_t *this)
+METHOD(enumerator_t, peer_enumerator_destroy, void,
+	peer_enumerator_t *this)
 {
 	DESTROY_IF(this->current);
 	this->inner->destroy(this->inner);
@@ -599,12 +600,16 @@ METHOD(backend_t, create_peer_cfg_enumerator, enumerator_t*,
 {
 	peer_enumerator_t *e = malloc_thing(peer_enumerator_t);
 
-	e->this = this;
-	e->me = me;
-	e->other = other;
-	e->current = NULL;
-	e->public.enumerate = (void*)peer_enumerator_enumerate;
-	e->public.destroy = (void*)peer_enumerator_destroy;
+	INIT(e,
+		.public = {
+			.enumerate = enumerator_enumerate_default,
+			.venumerate = _peer_enumerator_enumerate,
+			.destroy = _peer_enumerator_destroy,
+		},
+		.this = this,
+		.me = me,
+		.other = other,
+	);
 
 	/* TODO: only get configs whose IDs match exactly or contain wildcards */
 	e->inner = this->db->query(this->db,

src/libcharon/plugins/sql/sql_cred.c

@@ -52,11 +52,14 @@ typedef struct {
 } private_enumerator_t;
 
 METHOD(enumerator_t, private_enumerator_enumerate, bool,
-	   private_enumerator_t *this, private_key_t **key)
+	   private_enumerator_t *this, va_list args)
 {
+	private_key_t **key;
 	chunk_t blob;
 	int type;
 
+	VA_ARGS_VGET(args, key);
+
 	DESTROY_IF(this->current);
 	while (this->inner->enumerate(this->inner, &type, &blob))
 	{
@@ -88,7 +91,8 @@ METHOD(credential_set_t, create_private_enumerator, enumerator_t*,
 
 	INIT(e,
 		.public = {
-			.enumerate = (void*)_private_enumerator_enumerate,
+			.enumerate = enumerator_enumerate_default,
+			.venumerate = _private_enumerator_enumerate,
 			.destroy = _private_enumerator_destroy,
 		},
 	);
@@ -132,11 +136,14 @@ typedef struct {
 } cert_enumerator_t;
 
 METHOD(enumerator_t, cert_enumerator_enumerate, bool,
-	   cert_enumerator_t *this, certificate_t **cert)
+	   cert_enumerator_t *this, va_list args)
 {
+	certificate_t **cert;
 	chunk_t blob;
 	int type;
 
+	VA_ARGS_VGET(args, cert);
+
 	DESTROY_IF(this->current);
 	while (this->inner->enumerate(this->inner, &type, &blob))
 	{
@@ -169,7 +176,8 @@ METHOD(credential_set_t, create_cert_enumerator, enumerator_t*,
 
 	INIT(e,
 		.public = {
-			.enumerate = (void*)_cert_enumerator_enumerate,
+			.enumerate = enumerator_enumerate_default,
+			.venumerate = _cert_enumerator_enumerate,
 			.destroy = _cert_enumerator_destroy,
 		},
 	);
@@ -221,12 +229,15 @@ typedef struct {
 } shared_enumerator_t;
 
 METHOD(enumerator_t, shared_enumerator_enumerate, bool,
-	   shared_enumerator_t *this, shared_key_t **shared,
-	   id_match_t *me, id_match_t *other)
+	   shared_enumerator_t *this, va_list args)
 {
+	shared_key_t **shared;
+	id_match_t *me, *other;
 	chunk_t blob;
 	int type;
 
+	VA_ARGS_VGET(args, shared, me, other);
+
 	DESTROY_IF(this->current);
 	while (this->inner->enumerate(this->inner, &type, &blob))
 	{
@@ -265,7 +276,8 @@ METHOD(credential_set_t, create_shared_enumerator, enumerator_t*,
 
 	INIT(e,
 		.public = {
-			.enumerate = (void*)_shared_enumerator_enumerate,
+			.enumerate = enumerator_enumerate_default,
+			.venumerate = _shared_enumerator_enumerate,
 			.destroy = _shared_enumerator_destroy,
 		},
 		.me = me,
@@ -340,9 +352,11 @@ typedef enum {
 } cdp_type_t;
 
 METHOD(enumerator_t, cdp_enumerator_enumerate, bool,
-	   cdp_enumerator_t *this, char **uri)
+	   cdp_enumerator_t *this, va_list args)
 {
-	char *text;
+	char *text, **uri;
+
+	VA_ARGS_VGET(args, uri);
 
 	free(this->current);
 	while (this->inner->enumerate(this->inner, &text))
@@ -384,7 +398,8 @@ METHOD(credential_set_t, create_cdp_enumerator, enumerator_t*,
 	}
 	INIT(e,
 		.public = {
-			.enumerate = (void*)_cdp_enumerator_enumerate,
+			.enumerate = enumerator_enumerate_default,
+			.venumerate = _cdp_enumerator_enumerate,
 			.destroy = _cdp_enumerator_destroy,
 		},
 	);

src/libcharon/plugins/uci/uci_config.c

@@ -118,11 +118,12 @@ static u_int create_rekey(char *string)
 }
 
 METHOD(enumerator_t, peer_enumerator_enumerate, bool,
-	peer_enumerator_t *this, peer_cfg_t **cfg)
+	peer_enumerator_t *this, va_list args)
 {
 	char *name, *ike_proposal, *esp_proposal, *ike_rekey, *esp_rekey;
 	char *local_id, *local_addr, *local_net;
 	char *remote_id, *remote_addr, *remote_net;
+	peer_cfg_t **cfg;
 	child_cfg_t *child_cfg;
 	ike_cfg_t *ike_cfg;
 	auth_cfg_t *auth;
@@ -145,6 +146,8 @@ METHOD(enumerator_t, peer_enumerator_enumerate, bool,
 		.mode = MODE_TUNNEL,
 	};
 
+	VA_ARGS_VGET(args, cfg);
+
 	/* defaults */
 	name = "unnamed";
 	local_id = NULL;
@@ -212,7 +215,8 @@ METHOD(backend_t, create_peer_cfg_enumerator, enumerator_t*,
 
 	INIT(e,
 		.public = {
-			.enumerate = (void*)_peer_enumerator_enumerate,
+			.enumerate = enumerator_enumerate_default,
+			.venumerate = _peer_enumerator_enumerate,
 			.destroy = _peer_enumerator_destroy,
 		},
 		.inner = this->parser->create_section_enumerator(this->parser,
@@ -241,10 +245,13 @@ typedef struct {
 } ike_enumerator_t;
 
 METHOD(enumerator_t, ike_enumerator_enumerate, bool,
-	ike_enumerator_t *this, ike_cfg_t **cfg)
+	ike_enumerator_t *this, va_list args)
 {
+	ike_cfg_t **cfg;
 	char *local_addr, *remote_addr, *ike_proposal;
 
+	VA_ARGS_VGET(args, cfg);
+
 	/* defaults */
 	local_addr = "0.0.0.0";
 	remote_addr = "0.0.0.0";
@@ -282,7 +289,8 @@ METHOD(backend_t, create_ike_cfg_enumerator, enumerator_t*,
 
 	INIT(e,
 		.public = {
-			.enumerate = (void*)_ike_enumerator_enumerate,
+			.enumerate = enumerator_enumerate_default,
+			.venumerate = _ike_enumerator_enumerate,
 			.destroy = _ike_enumerator_destroy,
 		},
 		.inner = this->parser->create_section_enumerator(this->parser,

src/libcharon/plugins/uci/uci_creds.c

@@ -52,12 +52,15 @@ typedef struct {
 } shared_enumerator_t;
 
 METHOD(enumerator_t, shared_enumerator_enumerate, bool,
-	shared_enumerator_t *this, shared_key_t **key, id_match_t *me,
-	id_match_t *other)
+	shared_enumerator_t *this, va_list args)
 {
+	shared_key_t **key;
+	id_match_t *me, *other;
 	char *local_id, *remote_id, *psk;
 	identification_t *local, *remote;
 
+	VA_ARGS_VGET(args, key, me, other);
+
 	while (TRUE)
 	{
 		/* defaults */
@@ -126,7 +129,8 @@ METHOD(credential_set_t, create_shared_enumerator, enumerator_t*,
 
 	INIT(e,
 		.public = {
-			.enumerate = (void*)_shared_enumerator_enumerate,
+			.enumerate = enumerator_enumerate_default,
+			.venumerate = _shared_enumerator_enumerate,
 			.destroy = _shared_enumerator_destroy,
 		},
 		.me = me,

src/libcharon/plugins/uci/uci_parser.c

@@ -58,11 +58,10 @@ typedef struct {
 } section_enumerator_t;
 
 METHOD(enumerator_t, section_enumerator_enumerate, bool,
-	section_enumerator_t *this, ...)
+	section_enumerator_t *this, va_list args)
 {
 	struct uci_element *element;
 	char **value;
-	va_list args;
 	int i;
 
 	if (&this->current->list == this->list)
@@ -70,8 +69,6 @@ METHOD(enumerator_t, section_enumerator_enumerate, bool,
 		return FALSE;
 	}
 
-	va_start(args, this);
-
 	value = va_arg(args, char**);
 	if (value)
 	{
@@ -96,7 +93,6 @@ METHOD(enumerator_t, section_enumerator_enumerate, bool,
 			*value = uci_to_option(element)->value;
 		}
 	}
-	va_end(args);
 
 	this->current = list_to_element(this->current->list.next);
 	return TRUE;
@@ -124,7 +120,13 @@ METHOD(uci_parser_t, create_section_enumerator, enumerator_t*,
 		i++;
 	}
 	va_end(args);
-	e = malloc(sizeof(section_enumerator_t) + sizeof(char*) * i);
+	INIT_EXTRA(e, sizeof(char*) * i,
+		.public = {
+			.enumerate = enumerator_enumerate_default,
+			.venumerate = _section_enumerator_enumerate,
+			.destroy = _section_enumerator_destroy,
+		},
+	);
 	i = 0;
 	va_start(args, this);
 	do
@@ -134,9 +136,6 @@ METHOD(uci_parser_t, create_section_enumerator, enumerator_t*,
 	while (e->keywords[i++]);
 	va_end(args);
 
-	e->public.enumerate = (void*)_section_enumerator_enumerate;
-	e->public.destroy = _section_enumerator_destroy;
-
 	/* load uci context */
 	e->ctx = uci_alloc_context();
 	if (uci_load(e->ctx, this->package, &e->package) != UCI_OK)

src/libcharon/plugins/unity/unity_handler.c

@@ -368,9 +368,12 @@ typedef struct {
 } attribute_enumerator_t;
 
 METHOD(enumerator_t, enumerate_attributes, bool,
-	attribute_enumerator_t *this, configuration_attribute_type_t *type,
-	chunk_t *data)
+	attribute_enumerator_t *this, va_list args)
 {
+	configuration_attribute_type_t *type;
+	chunk_t *data;
+
+	VA_ARGS_VGET(args, type, data);
 	if (this->i < countof(attributes))
 	{
 		*type = attributes[this->i++];
@@ -393,7 +396,8 @@ METHOD(attribute_handler_t, create_attribute_enumerator, enumerator_t *,
 	}
 	INIT(enumerator,
 		.public = {
-			.enumerate = (void*)_enumerate_attributes,
+			.enumerate = enumerator_enumerate_default,
+			.venumerate = _enumerate_attributes,
 			.destroy = (void*)free,
 		},
 	);

src/libcharon/plugins/unity/unity_provider.c

@@ -77,12 +77,15 @@ static void append_ts(bio_writer_t *writer, traffic_selector_t *ts)
 }
 
 METHOD(enumerator_t, attribute_enumerate, bool,
-	attribute_enumerator_t *this, configuration_attribute_type_t *type,
-	chunk_t *attr)
+	attribute_enumerator_t *this, va_list args)
 {
+	configuration_attribute_type_t *type;
+	chunk_t *attr;
 	traffic_selector_t *ts;
 	bio_writer_t *writer;
 
+	VA_ARGS_VGET(args, type, attr);
+
 	if (this->list->get_count(this->list) == 0)
 	{
 		return FALSE;
@@ -183,7 +186,8 @@ METHOD(attribute_provider_t, create_attribute_enumerator, enumerator_t*,
 
 	INIT(attr_enum,
 		.public = {
-			.enumerate = (void*)_attribute_enumerate,
+			.enumerate = enumerator_enumerate_default,
+			.venumerate = _attribute_enumerate,
 			.destroy = _attribute_destroy,
 		},
 		.list = list,

src/libcharon/plugins/vici/suites/test_message.c

@@ -122,9 +122,14 @@ typedef struct {
 	endecode_test_t *next;
 } endecode_enum_t;
 
-static bool endecode_enumerate(endecode_enum_t *this, vici_type_t *type,
-							   char **name, chunk_t *data)
+METHOD(enumerator_t, endecode_enumerate, bool,
+	endecode_enum_t *this, va_list args)
 {
+	vici_type_t *type;
+	chunk_t *data;
+	char **name;
+
+	VA_ARGS_VGET(args, type, name, data);
 	if (this->next)
 	{
 		*type = this->next->type;
@@ -149,7 +154,8 @@ static enumerator_t *endecode_create_enumerator(endecode_test_t *test)
 
 	INIT(enumerator,
 		.public = {
-			.enumerate = (void*)endecode_enumerate,
+			.enumerate = enumerator_enumerate_default,
+			.venumerate = _endecode_enumerate,
 			.destroy = (void*)free,
 		},
 		.next = test,

src/libcharon/plugins/vici/vici_message.c

@@ -135,11 +135,16 @@ typedef struct {
 } parse_enumerator_t;
 
 METHOD(enumerator_t, parse_enumerate, bool,
-	parse_enumerator_t *this, vici_type_t *out, char **name, chunk_t *value)
+	parse_enumerator_t *this, va_list args)
 {
+	vici_type_t *out;
+	chunk_t *value;
+	char **name;
 	uint8_t type;
 	chunk_t data;
 
+	VA_ARGS_VGET(args, out, name, value);
+
 	if (!this->reader->remaining(this->reader) ||
 		!this->reader->read_uint8(this->reader, &type))
 	{
@@ -218,7 +223,8 @@ METHOD(vici_message_t, create_enumerator, enumerator_t*,
 
 	INIT(enumerator,
 		.public = {
-			.enumerate = (void*)_parse_enumerate,
+			.enumerate = enumerator_enumerate_default,
+			.venumerate = _parse_enumerate,
 			.destroy = _parse_destroy,
 		},
 		.reader = bio_reader_create(this->encoding),