Pass a list instead of a single virtual IP to attribute enumerators

src/libhydra/attributes/attribute_handler.h

@@ -22,8 +22,8 @@
 #define ATTRIBUTE_HANDLER_H_
 
 #include <chunk.h>
-#include <utils/host.h>
 #include <utils/identification.h>
+#include <utils/linked_list.h>
 
 #include "attributes.h"
 
@@ -62,11 +62,11 @@ struct attribute_handler_t {
 	 * Enumerate attributes to request from a server.
 	 *
 	 * @param server		server identity to request attributes from
-	 * @param vip			virtual IP we are requesting, if any
+	 * @param vips			list of virtual IPs (host_t*) we are requesting
 	 * @return				enumerator (configuration_attribute_type_t, chunk_t)
 	 */
 	enumerator_t* (*create_attribute_enumerator)(attribute_handler_t *this,
-										identification_t *server, host_t *vip);
+								identification_t *server, linked_list_t *vips);
 };
 
 #endif /** ATTRIBUTE_HANDLER_H_ @}*/

src/libhydra/attributes/attribute_manager.c

@@ -55,8 +55,8 @@ typedef struct {
 	char *pool;
 	/** server/peer identity */
 	identification_t *id;
-	/** requesting/assigned virtual IP */
-	host_t *vip;
+	/** requesting/assigned virtual IPs */
+	linked_list_t *vips;
 } enum_data_t;
 
 METHOD(attribute_manager_t, acquire_address, host_t*,
@@ -118,18 +118,20 @@ static enumerator_t *responder_enum_create(attribute_provider_t *provider,
 										   enum_data_t *data)
 {
 	return provider->create_attribute_enumerator(provider, data->pool,
-												 data->id, data->vip);
+												 data->id, data->vips);
 }
 
 METHOD(attribute_manager_t, create_responder_enumerator, enumerator_t*,
 	private_attribute_manager_t *this, char *pool, identification_t *id,
-	host_t *vip)
+	linked_list_t *vips)
 {
-	enum_data_t *data = malloc_thing(enum_data_t);
+	enum_data_t *data;
 
-	data->pool = pool;
-	data->id = id;
-	data->vip = vip;
+	INIT(data,
+		.pool = pool,
+		.id = id,
+		.vips = vips,
+	);
 	this->lock->read_lock(this->lock);
 	return enumerator_create_cleaner(
 				enumerator_create_nested(
@@ -235,8 +237,8 @@ typedef struct {
 	enumerator_t *inner;
 	/** server ID we want attributes for */
 	identification_t *id;
-	/** virtual IP we are requesting along with attriubutes */
-	host_t *vip;
+	/** virtual IPs we are requesting along with attriubutes */
+	linked_list_t *vips;
 } initiator_enumerator_t;
 
 /**
@@ -256,7 +258,7 @@ static bool initiator_enumerate(initiator_enumerator_t *this,
 		}
 		DESTROY_IF(this->inner);
 		this->inner = this->handler->create_attribute_enumerator(this->handler,
-														this->id, this->vip);
+														this->id, this->vips);
 	}
 	/* inject the handler as additional attribute */
 	*handler = this->handler;
@@ -275,20 +277,22 @@ static void initiator_destroy(initiator_enumerator_t *this)
 }
 
 METHOD(attribute_manager_t, create_initiator_enumerator, enumerator_t*,
-	private_attribute_manager_t *this, identification_t *id, host_t *vip)
+	private_attribute_manager_t *this, identification_t *id, linked_list_t *vips)
 {
-	initiator_enumerator_t *enumerator = malloc_thing(initiator_enumerator_t);
+	initiator_enumerator_t *enumerator;
 
 	this->lock->read_lock(this->lock);
-	enumerator->public.enumerate = (void*)initiator_enumerate;
-	enumerator->public.destroy = (void*)initiator_destroy;
-	enumerator->this = this;
-	enumerator->id = id;
-	enumerator->vip = vip;
-	enumerator->outer = this->handlers->create_enumerator(this->handlers);
-	enumerator->inner = NULL;
-	enumerator->handler = NULL;
 
+	INIT(enumerator,
+		.public = {
+			.enumerate = (void*)initiator_enumerate,
+			.destroy = (void*)initiator_destroy,
+		},
+		.this = this,
+		.id = id,
+		.vips = vips,
+		.outer = this->handlers->create_enumerator(this->handlers),
+	);
 	return &enumerator->public;
 }
 

src/libhydra/attributes/attribute_manager.h

@@ -64,11 +64,11 @@ struct attribute_manager_t {
 	 *
 	 * @param pool			pool name to get attributes from
 	 * @param id			peer identity to hand out attributes to
-	 * @param vip			virtual IP to assign to peer, if any
+	 * @param vip			list of virtual IPs (host_t*) to assign to peer
 	 * @return				enumerator (configuration_attribute_type_t, chunk_t)
 	 */
 	enumerator_t* (*create_responder_enumerator)(attribute_manager_t *this,
-								char *pool, identification_t *id, host_t *vip);
+						char *pool, identification_t *id, linked_list_t *vips);
 
 	/**
 	 * Register an attribute provider to the manager.
@@ -115,11 +115,11 @@ struct attribute_manager_t {
 	 * Create an enumerator over attributes to request from server.
 	 *
 	 * @param id			server identity to hand out attributes to
-	 * @param vip			virtual IP going to request, if any
+	 * @param vip			list of virtual IPs (host_t*) going to request
 	 * @return				enumerator (attribute_handler_t, ca_type_t, chunk_t)
 	 */
 	enumerator_t* (*create_initiator_enumerator)(attribute_manager_t *this,
-											identification_t *id, host_t *vip);
+									identification_t *id, linked_list_t *vips);
 
 	/**
 	 * Register an attribute handler to the manager.

src/libhydra/attributes/attribute_provider.h

@@ -23,6 +23,7 @@
 
 #include <utils/host.h>
 #include <utils/identification.h>
+#include <utils/linked_list.h>
 
 typedef struct attribute_provider_t attribute_provider_t;
 
@@ -58,11 +59,11 @@ struct attribute_provider_t {
 	 *
 	 * @param pool			pool name to get attributes from
 	 * @param id			peer ID
-	 * @param vip			virtual IP to assign to peer, if any
+	 * @param vip			list of virtual IPs (host_t*) to assign to peer
 	 * @return				enumerator (configuration_attribute_type_t, chunk_t)
 	 */
 	enumerator_t* (*create_attribute_enumerator)(attribute_provider_t *this,
-							char *pool, identification_t *id, host_t *vip);
+						char *pool, identification_t *id, linked_list_t *vips);
 };
 
 #endif /** ATTRIBUTE_PROVIDER_H_ @}*/

src/libhydra/plugins/attr/attr_provider.c

@@ -78,9 +78,9 @@ static bool attr_enum_filter(void *null, attribute_entry_t **in,
 
 METHOD(attribute_provider_t, create_attribute_enumerator, enumerator_t*,
 	private_attr_provider_t *this, char *pool,
-	identification_t *id, host_t *vip)
+	identification_t *id, linked_list_t *vips)
 {
-	if (vip)
+	if (vips->get_count(vips))
 	{
 		this->lock->read_lock(this->lock);
 		return enumerator_create_filter(

src/libhydra/plugins/attr_sql/sql_attribute.c

@@ -340,11 +340,11 @@ METHOD(attribute_provider_t, release_address, bool,
 
 METHOD(attribute_provider_t, create_attribute_enumerator, enumerator_t*,
 	private_sql_attribute_t *this, char *names, identification_t *id,
-	host_t *vip)
+	linked_list_t *vips)
 {
 	enumerator_t *attr_enumerator = NULL;
 
-	if (vip)
+	if (vips->get_count(vips))
 	{
 		enumerator_t *names_enumerator;
 		u_int count;

src/libhydra/plugins/resolve/resolve_handler.c

@@ -267,46 +267,71 @@ METHOD(attribute_handler_t, release, void,
 typedef struct {
 	/** implements enumerator_t interface */
 	enumerator_t public;
-	/** virtual IP we are requesting */
-	host_t *vip;
+	/** request IPv4 DNS? */
+	bool v4;
+	/** request IPv6 DNS? */
+	bool v6;
 } attribute_enumerator_t;
 
 static bool attribute_enumerate(attribute_enumerator_t *this,
 								configuration_attribute_type_t *type,
 								chunk_t *data)
 {
-	switch (this->vip->get_family(this->vip))
+	if (this->v4)
 	{
-		case AF_INET:
-			*type = INTERNAL_IP4_DNS;
-			break;
-		case AF_INET6:
-			*type = INTERNAL_IP6_DNS;
-			break;
-		default:
-			return FALSE;
+		*type = INTERNAL_IP4_DNS;
+		*data = chunk_empty;
+		this->v4 = FALSE;
+		return TRUE;
 	}
-	*data = chunk_empty;
-	/* enumerate only once */
-	this->public.enumerate = (void*)return_false;
-	return TRUE;
+	if (this->v6)
+	{
+		*type = INTERNAL_IP6_DNS;
+		*data = chunk_empty;
+		this->v6 = FALSE;
+		return TRUE;
+	}
+	return FALSE;
+}
+
+/**
+ * Check if a list has a host of given family
+ */
+static bool has_host_family(linked_list_t *list, int family)
+{
+	enumerator_t *enumerator;
+	host_t *host;
+	bool found = FALSE;
+
+	enumerator = list->create_enumerator(list);
+	while (enumerator->enumerate(enumerator, &host))
+	{
+		if (host->get_family(host) == family)
+		{
+			found = TRUE;
+			break;
+		}
+	}
+	enumerator->destroy(enumerator);
+
+	return found;
 }
 
 METHOD(attribute_handler_t, create_attribute_enumerator, enumerator_t*,
-	private_resolve_handler_t *this, identification_t *server, host_t *vip)
+	private_resolve_handler_t *this, identification_t *server,
+	linked_list_t *vips)
 {
-	if (vip)
-	{
-		attribute_enumerator_t *enumerator;
+	attribute_enumerator_t *enumerator;
 
-		enumerator = malloc_thing(attribute_enumerator_t);
-		enumerator->public.enumerate = (void*)attribute_enumerate;
-		enumerator->public.destroy = (void*)free;
-		enumerator->vip = vip;
-
-		return &enumerator->public;
-	}
-	return enumerator_create_empty();
+	INIT(enumerator,
+		.public = {
+			.enumerate = (void*)attribute_enumerate,
+			.destroy = (void*)free,
+		},
+		.v4 = has_host_family(vips, AF_INET),
+		.v6 = has_host_family(vips, AF_INET6),
+	);
+	return &enumerator->public;
 }
 
 METHOD(resolve_handler_t, destroy, void,