renamed openair-cn to openair3

git-svn-id: http://svn.eurecom.fr/openair4G/trunk@7886 818b1a75-f10b-46b9-bf7c-635c3b92a50f
2015-10-06 16:53:42 +00:00
parent c7518ecf42
commit 7b5431a62c
705 changed files with 206 additions and 208 deletions
@@ -0,0 +1,179 @@
+/*
+ * Copyright (c) 2015, EURECOM (www.eurecom.fr)
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * The views and conclusions contained in the software and documentation are those
+ * of the authors and should not be interpreted as representing official policies,
+ * either expressed or implied, of the FreeBSD Project.
+ */
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdint.h>
+
+
+#include "TLVEncoder.h"
+#include "TLVDecoder.h"
+#include "NASSecurityModeCommand.h"
+
+int decode_security_mode_command(security_mode_command_msg *security_mode_command, uint8_t *buffer, uint32_t len)
+{
+  uint32_t decoded = 0;
+  int decoded_result = 0;
+
+  // Check if we got a NULL pointer and if buffer length is >= minimum length expected for the message.
+  CHECK_PDU_POINTER_AND_LENGTH_DECODER(buffer, SECURITY_MODE_COMMAND_MINIMUM_LENGTH, len);
+
+  /* Decoding mandatory fields */
+  if ((decoded_result = decode_nas_security_algorithms(&security_mode_command->selectednassecurityalgorithms, 0, buffer + decoded, len - decoded)) < 0)
+    return decoded_result;
+  else
+    decoded += decoded_result;
+
+  if ((decoded_result = decode_u8_nas_key_set_identifier(&security_mode_command->naskeysetidentifier, 0, *(buffer + decoded) & 0x0f, len - decoded)) < 0)
+    return decoded_result;
+
+  decoded++;
+
+  if ((decoded_result = decode_ue_security_capability(&security_mode_command->replayeduesecuritycapabilities, 0, buffer + decoded, len - decoded)) < 0)
+    return decoded_result;
+  else
+    decoded += decoded_result;
+
+  /* Decoding optional fields */
+  while(len - decoded > 0) {
+    uint8_t ieiDecoded = *(buffer + decoded);
+
+    /* Type | value iei are below 0x80 so just return the first 4 bits */
+    if (ieiDecoded >= 0x80)
+      ieiDecoded = ieiDecoded & 0xf0;
+
+    switch(ieiDecoded) {
+    case SECURITY_MODE_COMMAND_IMEISV_REQUEST_IEI:
+      if ((decoded_result =
+             decode_imeisv_request(&security_mode_command->imeisvrequest,
+                                   SECURITY_MODE_COMMAND_IMEISV_REQUEST_IEI, buffer + decoded,
+                                   len - decoded)) <= 0)
+        return decoded_result;
+
+      decoded += decoded_result;
+      /* Set corresponding mask to 1 in presencemask */
+      security_mode_command->presencemask |= SECURITY_MODE_COMMAND_IMEISV_REQUEST_PRESENT;
+      break;
+
+    case SECURITY_MODE_COMMAND_REPLAYED_NONCEUE_IEI:
+      if ((decoded_result =
+             decode_nonce(&security_mode_command->replayednonceue,
+                          SECURITY_MODE_COMMAND_REPLAYED_NONCEUE_IEI, buffer +
+                          decoded, len - decoded)) <= 0)
+        return decoded_result;
+
+      decoded += decoded_result;
+      /* Set corresponding mask to 1 in presencemask */
+      security_mode_command->presencemask |= SECURITY_MODE_COMMAND_REPLAYED_NONCEUE_PRESENT;
+      break;
+
+    case SECURITY_MODE_COMMAND_NONCEMME_IEI:
+      if ((decoded_result =
+             decode_nonce(&security_mode_command->noncemme,
+                          SECURITY_MODE_COMMAND_NONCEMME_IEI, buffer + decoded, len -
+                          decoded)) <= 0)
+        return decoded_result;
+
+      decoded += decoded_result;
+      /* Set corresponding mask to 1 in presencemask */
+      security_mode_command->presencemask |= SECURITY_MODE_COMMAND_NONCEMME_PRESENT;
+      break;
+
+    default:
+      errorCodeDecoder = TLV_DECODE_UNEXPECTED_IEI;
+      return TLV_DECODE_UNEXPECTED_IEI;
+    }
+  }
+
+  return decoded;
+}
+
+int encode_security_mode_command(security_mode_command_msg *security_mode_command, uint8_t *buffer, uint32_t len)
+{
+  int encoded = 0;
+  int encode_result = 0;
+
+  /* Checking IEI and pointer */
+  CHECK_PDU_POINTER_AND_LENGTH_ENCODER(buffer, SECURITY_MODE_COMMAND_MINIMUM_LENGTH, len);
+
+  if ((encode_result =
+         encode_nas_security_algorithms(&security_mode_command->selectednassecurityalgorithms,
+                                        0, buffer + encoded, len - encoded)) < 0)        //Return in case of error
+    return encode_result;
+  else
+    encoded += encode_result;
+
+  *(buffer + encoded) = (encode_u8_nas_key_set_identifier(&security_mode_command->naskeysetidentifier) & 0x0f);
+  encoded++;
+
+  if ((encode_result =
+         encode_ue_security_capability(&security_mode_command->replayeduesecuritycapabilities,
+                                       0, buffer + encoded, len - encoded)) < 0)        //Return in case of error
+    return encode_result;
+  else
+    encoded += encode_result;
+
+  if ((security_mode_command->presencemask & SECURITY_MODE_COMMAND_IMEISV_REQUEST_PRESENT)
+      == SECURITY_MODE_COMMAND_IMEISV_REQUEST_PRESENT) {
+    if ((encode_result =
+           encode_imeisv_request(&security_mode_command->imeisvrequest,
+                                 SECURITY_MODE_COMMAND_IMEISV_REQUEST_IEI, buffer + encoded, len -
+                                 encoded)) < 0)
+      // Return in case of error
+      return encode_result;
+    else
+      encoded += encode_result;
+  }
+
+  if ((security_mode_command->presencemask & SECURITY_MODE_COMMAND_REPLAYED_NONCEUE_PRESENT)
+      == SECURITY_MODE_COMMAND_REPLAYED_NONCEUE_PRESENT) {
+    if ((encode_result =
+           encode_nonce(&security_mode_command->replayednonceue,
+                        SECURITY_MODE_COMMAND_REPLAYED_NONCEUE_IEI, buffer + encoded, len
+                        - encoded)) < 0)
+      // Return in case of error
+      return encode_result;
+    else
+      encoded += encode_result;
+  }
+
+  if ((security_mode_command->presencemask & SECURITY_MODE_COMMAND_NONCEMME_PRESENT)
+      == SECURITY_MODE_COMMAND_NONCEMME_PRESENT) {
+    if ((encode_result = encode_nonce(&security_mode_command->noncemme,
+                                      SECURITY_MODE_COMMAND_NONCEMME_IEI, buffer + encoded, len -
+                                      encoded)) < 0)
+      // Return in case of error
+      return encode_result;
+    else
+      encoded += encode_result;
+  }
+
+  return encoded;
+}
+