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-rw-r--r--ctrl/libhicnctrl/src/face.c245
1 files changed, 245 insertions, 0 deletions
diff --git a/ctrl/libhicnctrl/src/face.c b/ctrl/libhicnctrl/src/face.c
new file mode 100644
index 000000000..9e0fbb597
--- /dev/null
+++ b/ctrl/libhicnctrl/src/face.c
@@ -0,0 +1,245 @@
+/*
+ * Copyright (c) 2017-2019 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * \file face.c
+ * \brief Implementation of face abstraction
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "face.h"
+#include "util/hash.h"
+#include "util/token.h"
+
+#define member_size(type, member) sizeof(((type *)0)->member)
+
+
+/* Netdevice */
+
+const char * netdevice_type_str[] = {
+#define _(x) [NETDEVICE_TYPE_ ## x] = STRINGIZE(x),
+foreach_netdevice_type
+#undef _
+};
+
+
+/* Face state */
+
+const char * face_state_str[] = {
+#define _(x) [FACE_STATE_ ## x] = STRINGIZE(x),
+foreach_face_state
+#undef _
+};
+
+
+/* Face type */
+
+const char * face_type_str[] = {
+#define _(x) [FACE_TYPE_ ## x] = STRINGIZE(x),
+foreach_face_type
+#undef _
+};
+
+
+/* Face */
+
+int
+face_initialize(face_t * face)
+{
+ bzero(face, sizeof(face_t)); /* 0'ed for hash */
+ return 1;
+}
+
+int
+face_initialize_udp(face_t * face, const ip_address_t * local_addr,
+ u16 local_port, const ip_address_t * remote_addr, u16 remote_port,
+ int family)
+{
+ *face = (face_t) {
+ .type = FACE_TYPE_UDP,
+ .params.tunnel = {
+ .family = family,
+ .local_addr = *local_addr,
+ .local_port = local_port,
+ .remote_addr = *remote_addr,
+ .remote_port = remote_port,
+ },
+ };
+ return 1;
+}
+
+int
+face_initialize_udp_sa(face_t * face, const struct sockaddr * local_addr,
+ const struct sockaddr * remote_addr)
+{
+ if (local_addr->sa_family != remote_addr->sa_family)
+ return -1;
+
+ switch (local_addr->sa_family) {
+ case AF_INET:
+ {
+ struct sockaddr_in *lsai = (struct sockaddr_in *)local_addr;
+ struct sockaddr_in *rsai = (struct sockaddr_in *)remote_addr;
+ *face = (face_t) {
+ .type = FACE_TYPE_UDP,
+ .params.tunnel = {
+ .family = AF_INET,
+ .local_addr.v4.as_inaddr = lsai->sin_addr,
+ .local_port = ntohs(lsai->sin_port),
+ .remote_addr.v4.as_inaddr = rsai->sin_addr,
+ .remote_port = ntohs(rsai->sin_port),
+ },
+ };
+ }
+ break;
+ case AF_INET6:
+ {
+ struct sockaddr_in6 *lsai = (struct sockaddr_in6 *)local_addr;
+ struct sockaddr_in6 *rsai = (struct sockaddr_in6 *)remote_addr;
+ *face = (face_t) {
+ .type = FACE_TYPE_UDP,
+ .params.tunnel = {
+ .family = AF_INET6,
+ .local_addr.v6.as_in6addr = lsai->sin6_addr,
+ .local_port = ntohs(lsai->sin6_port),
+ .remote_addr.v6.as_in6addr = rsai->sin6_addr,
+ .remote_port = ntohs(rsai->sin6_port),
+ },
+ };
+ }
+ break;
+ default:
+ return -1;
+ }
+ return 1;
+}
+
+face_t * face_create()
+{
+ face_t * face = calloc(1, sizeof(face_t)); /* 0'ed for hash */
+ return face;
+}
+
+face_t * face_create_udp(const ip_address_t * local_addr, u16 local_port,
+ const ip_address_t * remote_addr, u16 remote_port, int family)
+{
+ face_t * face = face_create();
+ if (face_initialize_udp(face, local_addr, local_port, remote_addr, remote_port, family) < 0)
+ goto ERR_INIT;
+ return face;
+
+ERR_INIT:
+ free(face);
+ return NULL;
+}
+
+face_t * face_create_udp_sa(const struct sockaddr * local_addr,
+ const struct sockaddr * remote_addr)
+{
+ face_t * face = face_create();
+ if (face_initialize_udp_sa(face, local_addr, remote_addr) < 0)
+ goto ERR_INIT;
+ return face;
+
+ERR_INIT:
+ free(face);
+ return NULL;
+}
+
+void face_free(face_t * face)
+{
+ free(face);
+}
+
+#define face_param_cmp(f1, f2, face_param_type) \
+ memcmp(&f1->type, &f2->type, \
+ member_size(face_params_t, face_param_type));
+
+/**
+ * \brief Compare two faces
+ * \param [in] f1 - First face
+ * \param [in] f2 - Second face
+ * \return whether faces are equal, ie both their types are parameters are
+ * equal.
+ *
+ * NOTE: this function implements a partial order.
+ */
+int
+face_cmp(const face_t * f1, const face_t * f2)
+{
+ if (f1->type != f2->type)
+ return false;
+
+ switch(f1->type) {
+ case FACE_TYPE_HICN:
+ return face_param_cmp(f1, f2, hicn);
+ case FACE_TYPE_TCP:
+ case FACE_TYPE_UDP:
+ return face_param_cmp(f1, f2, tunnel);
+ default:
+ return false;
+ }
+}
+
+hash_t
+face_hash(const face_t * face)
+{
+ /* Assuming the unused part of the struct is set to zero */
+ return hash_struct(face);
+}
+
+/* /!\ Please update constants in header file upon changes */
+size_t
+face_snprintf(char * s, size_t size, const face_t * face)
+{
+ switch(face->type) {
+ case FACE_TYPE_HICN:
+ return 0; // XXX Not implemented
+ case FACE_TYPE_TCP:
+ case FACE_TYPE_UDP:
+ {
+ char local[MAXSZ_IP_ADDRESS];
+ char remote[MAXSZ_IP_ADDRESS];
+
+ ip_address_snprintf(local, MAXSZ_IP_ADDRESS,
+ &face->params.tunnel.local_addr,
+ face->params.tunnel.family);
+ ip_address_snprintf(remote, MAXSZ_IP_ADDRESS,
+ &face->params.tunnel.remote_addr,
+ face->params.tunnel.family);
+
+ return snprintf(s, size, "%s [%s:%d -> %s:%d]",
+ face_type_str[face->type],
+ local,
+ face->params.tunnel.local_port,
+ remote,
+ face->params.tunnel.remote_port);
+ }
+ break;
+ default:
+ return 0;
+ }
+
+}
+
+int
+face_set_tags(face_t * face, policy_tags_t tags)
+{
+ face->tags = tags;
+ return 1;
+}