1 files changed, 236 insertions, 0 deletions
diff --git a/hicn-light/src/core/name.c b/hicn-light/src/core/name.c
new file mode 100755
index 000000000..f6a452d27
--- /dev/null
+++ b/hicn-light/src/core/name.c
@@ -0,0 +1,236 @@
+/*
+ * 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.
+ */
+
+#include <limits.h>
+#include <src/config.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <parc/algol/parc_BufferComposer.h>
+#include <parc/algol/parc_Hash.h>
+#include <parc/algol/parc_Memory.h>
+
+#include <src/core/messageHandler.h>
+#include <src/core/name.h>
+
+#include <parc/algol/parc_Hash.h>
+
+#include <parc/assert/parc_Assert.h>
+
+#define IPv6_TYPE 6
+#define IPv4_TYPE 4
+
+// assumption: the IPv6 address is the name, the TCP segment number is the ICN
+// segment
+
+struct name {
+  NameBitvector *content_name;
+  uint32_t segment;
+  uint32_t name_hash;
+  // the refcount is shared between all copies
+  unsigned *refCountPtr;
+};
+
+// =====================================================
+
+static unsigned _getRefCount(const Name *name) { return *name->refCountPtr; }
+
+static void _incrementRefCount(Name *name) {
+  parcAssertTrue(*name->refCountPtr > 0,
+                 "Illegal State: Trying to increment a 0 refcount!");
+  (*name->refCountPtr)++;
+}
+
+static void _decrementRefCount(Name *name) {
+  parcAssertTrue(*name->refCountPtr > 0,
+                 "Illegal State: Trying to decrement a 0 refcount!");
+  (*name->refCountPtr)--;
+}
+
+static uint32_t _computeHash(Name *name) {
+  parcAssertNotNull(name, "Parameter must be non-null pointer");
+
+  uint32_t hash1 = nameBitvector_GetHash32(name->content_name);
+  return parcHash32_Data_Cumulative((const uint8_t *)&name->segment, 4, hash1);
+}
+
+// ============================================================================
+
+Name *name_CreateFromPacket(const uint8_t *packet, MessagePacketType type) {
+  Name *name = parcMemory_AllocateAndClear(sizeof(Name));
+  parcAssertNotNull(name, "parcMemory_AllocateAndClear(%zu) returned NULL",
+                    sizeof(Name));
+
+  if (messageHandler_GetIPPacketType(packet) == IPv6_TYPE) {
+    if (type == MessagePacketType_Interest) {
+      name->content_name = nameBitvector_CreateFromIn6Addr(
+          (struct in6_addr *)messageHandler_GetDestination(packet), 128);
+    } else if (type == MessagePacketType_ContentObject) {
+      name->content_name = nameBitvector_CreateFromIn6Addr(
+          (struct in6_addr *)messageHandler_GetSource(packet), 128);
+    } else {
+      parcMemory_Deallocate((void **)&name);
+      return NULL;
+    }
+  } else if (messageHandler_GetIPPacketType(packet) == IPv4_TYPE) {
+    if (type == MessagePacketType_Interest) {
+      name->content_name = nameBitvector_CreateFromInAddr(
+          *((uint32_t *)messageHandler_GetDestination(packet)), 32);
+    } else if (type == MessagePacketType_ContentObject) {
+      name->content_name = nameBitvector_CreateFromInAddr(
+          *((uint32_t *)messageHandler_GetSource(packet)), 32);
+    } else {
+      parcMemory_Deallocate((void **)&name);
+      return NULL;
+    }
+  } else {
+    printf("Error: unknown message type\n");
+    parcMemory_Deallocate((void **)&name);
+    return NULL;
+  }
+
+  name->segment = messageHandler_GetSegment(packet);
+  name->name_hash = _computeHash(name);
+
+  name->refCountPtr = parcMemory_Allocate(sizeof(unsigned));
+  parcAssertNotNull(name->refCountPtr, "parcMemory_Allocate(%zu) returned NULL",
+                    sizeof(unsigned));
+  *name->refCountPtr = 1;
+  return name;
+}
+
+Name *name_CreateFromAddress(address_type addressType, union commandAddr addr,
+                             uint8_t len) {
+  Name *name = parcMemory_AllocateAndClear(sizeof(Name));
+  parcAssertNotNull(name, "parcMemory_AllocateAndClear(%zu) returned NULL",
+                    sizeof(Name));
+  if (addressType == ADDR_INET) {
+    name->content_name = nameBitvector_CreateFromInAddr(addr.ipv4, len);
+  } else if (addressType == ADDR_INET6) {
+    name->content_name = nameBitvector_CreateFromIn6Addr(&addr.ipv6, len);
+  } else {
+    parcTrapNotImplemented("Unkown packet type");
+  }
+
+  name->segment = 0;
+  name->name_hash = _computeHash(name);
+
+  name->refCountPtr = parcMemory_Allocate(sizeof(unsigned));
+  parcAssertNotNull(name->refCountPtr, "parcMemory_Allocate(%zu) returned NULL",
+                    sizeof(unsigned));
+  *name->refCountPtr = 1;
+
+  return name;
+}
+
+void name_Release(Name **namePtr) {
+  parcAssertNotNull(namePtr, "Parameter must be non-null double pointer");
+  parcAssertNotNull(*namePtr, "Parameter must dereference to non-null pointer");
+
+  Name *name = *namePtr;
+  _decrementRefCount(name);
+  if (_getRefCount(name) == 0) {
+    parcMemory_Deallocate((void **)&(name->refCountPtr));
+    nameBitvector_Destroy(&(name->content_name));
+  }
+  parcMemory_Deallocate((void **)&name);
+  *namePtr = NULL;
+}
+
+Name *name_Acquire(const Name *original) {
+  parcAssertNotNull(original, "Parameter must be non-null");
+  Name *copy = parcMemory_AllocateAndClear(sizeof(Name));
+  parcAssertNotNull(copy, "parcMemory_AllocateAndClear(%zu) returned NULL",
+                    sizeof(Name));
+
+  memcpy(copy, original, sizeof(Name));
+  _incrementRefCount(copy);
+
+  return copy;
+}
+
+uint32_t name_HashCode(const Name *name) {
+  parcAssertNotNull(name, "Parameter must be non-null");
+  return name->name_hash;
+}
+
+NameBitvector *name_GetContentName(const Name *name) {
+  parcAssertNotNull(name, "Parameter must be non-null");
+  return name->content_name;
+}
+
+bool name_Equals(const Name *a, const Name *b) {
+  parcAssertNotNull(a, "Parameter a must be non-null");
+  parcAssertNotNull(b, "Parameter b must be non-null");
+
+  if ((nameBitvector_Equals(a->content_name, b->content_name) &&
+       a->segment == b->segment))
+    return true;
+  return false;
+}
+
+int name_Compare(const Name *a, const Name *b) {
+  parcAssertNotNull(a, "Parameter a must be non-null");
+  parcAssertNotNull(b, "Parameter b must be non-null");
+
+  if (a == NULL && b == NULL) {
+    return 0;
+  }
+  if (a == NULL) {
+    return -1;
+  }
+  if (b == NULL) {
+    return +1;
+  }
+
+  int res = nameBitvector_Compare(a->content_name, b->content_name);
+
+  if (res != 0) {
+    return res;
+  } else {
+    if (a->segment < b->segment) {
+      return -1;
+    } else if (a->segment > b->segment) {
+      return +1;
+    } else {
+      return 0;
+    }
+  }
+}
+
+bool name_StartsWith(const Name *name, const Name *prefix) {
+  parcAssertNotNull(name, "Parameter name must be non-null");
+  parcAssertNotNull(prefix, "Parameter prefix must be non-null");
+
+  return nameBitvector_StartsWith(name->content_name, prefix->content_name);
+}
+
+char *name_ToString(const Name *name) {
+  char *output = malloc(128);
+
+  Address *packetAddr = nameBitvector_ToAddress(name_GetContentName(name));
+
+  sprintf(output, "name: %s seq: %u", addressToString(packetAddr),
+          name->segment);
+
+  addressDestroy(&packetAddr);
+
+  return output;
+}
+
+void name_setLen(const Name *name, uint8_t len) {
+  nameBitvector_setLen(name->content_name, len);
+}