terence zhang
pick up wakaama files from https://github.com/eclipse/wakaama
Diff: core/utils.c
- Revision:
- 0:3f48af28ebcd
diff -r 000000000000 -r 3f48af28ebcd core/utils.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/core/utils.c Wed Apr 19 11:28:00 2017 +0000
@@ -0,0 +1,893 @@
+/*******************************************************************************
+ *
+ * Copyright (c) 2013, 2014 Intel Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * and Eclipse Distribution License v1.0 which accompany this distribution.
+ *
+ * The Eclipse Public License is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ * The Eclipse Distribution License is available at
+ * http://www.eclipse.org/org/documents/edl-v10.php.
+ *
+ * Contributors:
+ * David Navarro, Intel Corporation - initial API and implementation
+ * Toby Jaffey - Please refer to git log
+ *
+ *******************************************************************************/
+
+/*
+ Copyright (c) 2013, 2014 Intel Corporation
+
+ Redistribution and use in source and binary forms, with or without modification,
+ are permitted provided that the following conditions are met:
+
+ * Redistributions of source code must retain the above copyright notice,
+ this list of conditions and the following disclaimer.
+ * 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.
+ * Neither the name of Intel Corporation nor the names of its contributors
+ may be used to endorse or promote products derived from this software
+ without specific prior written permission.
+
+ 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.
+
+ David Navarro <david.navarro@intel.com>
+
+*/
+
+#include "internals.h"
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <float.h>
+
+
+int utils_plainTextToInt64(uint8_t * buffer,
+ int length,
+ int64_t * dataP)
+{
+ uint64_t result = 0;
+ int sign = 1;
+ int i = 0;
+
+ if (0 == length) return 0;
+
+ if (buffer[0] == '-')
+ {
+ sign = -1;
+ i = 1;
+ }
+
+ while (i < length)
+ {
+ if ('0' <= buffer[i] && buffer[i] <= '9')
+ {
+ if (result > (UINT64_MAX / 10)) return 0;
+ result *= 10;
+ result += buffer[i] - '0';
+ }
+ else
+ {
+ return 0;
+ }
+ i++;
+ }
+
+ if (result > INT64_MAX) return 0;
+
+ if (sign == -1)
+ {
+ *dataP = 0 - result;
+ }
+ else
+ {
+ *dataP = result;
+ }
+
+ return 1;
+}
+
+int utils_plainTextToFloat64(uint8_t * buffer,
+ int length,
+ double * dataP)
+{
+ double result;
+ int sign;
+ int i;
+
+ if (0 == length) return 0;
+
+ if (buffer[0] == '-')
+ {
+ sign = -1;
+ i = 1;
+ }
+ else
+ {
+ sign = 1;
+ i = 0;
+ }
+
+ result = 0;
+ while (i < length && buffer[i] != '.')
+ {
+ if ('0' <= buffer[i] && buffer[i] <= '9')
+ {
+ if (result > (DBL_MAX / 10)) return 0;
+ result *= 10;
+ result += (buffer[i] - '0');
+ }
+ else
+ {
+ return 0;
+ }
+ i++;
+ }
+ if (buffer[i] == '.')
+ {
+ double dec;
+
+ i++;
+ if (i == length) return 0;
+
+ dec = 0.1;
+ while (i < length)
+ {
+ if ('0' <= buffer[i] && buffer[i] <= '9')
+ {
+ if (result > (DBL_MAX - 1)) return 0;
+ result += (buffer[i] - '0') * dec;
+ dec /= 10;
+ }
+ else
+ {
+ return 0;
+ }
+ i++;
+ }
+ }
+
+ *dataP = result * sign;
+ return 1;
+}
+
+size_t utils_intToText(int64_t data,
+ uint8_t * string,
+ size_t length)
+{
+ int index;
+ bool minus;
+ size_t result;
+
+ if (data < 0)
+ {
+ minus = true;
+ data = 0 - data;
+ }
+ else
+ {
+ minus = false;
+ }
+
+ index = length - 1;
+ do
+ {
+ string[index] = '0' + data%10;
+ data /= 10;
+ index --;
+ } while (index >= 0 && data > 0);
+
+ if (data > 0) return 0;
+
+ if (minus == true)
+ {
+ if (index == 0) return 0;
+ string[index] = '-';
+ }
+ else
+ {
+ index++;
+ }
+
+ result = length - index;
+
+ if (result < length)
+ {
+ memmove(string, string + index, result);
+ }
+
+ return result;
+}
+
+size_t utils_floatToText(double data,
+ uint8_t * string,
+ size_t length)
+{
+ size_t intLength;
+ size_t decLength;
+ int64_t intPart;
+ double decPart;
+
+ if (data <= (double)INT64_MIN || data >= (double)INT64_MAX) return 0;
+
+ intPart = (int64_t)data;
+ decPart = data - intPart;
+ if (decPart < 0)
+ {
+ decPart = 1 - decPart;
+ }
+ else
+ {
+ decPart = 1 + decPart;
+ }
+
+ if (decPart <= 1 + FLT_EPSILON)
+ {
+ decPart = 0;
+ }
+
+ if (intPart == 0 && data < 0)
+ {
+ // deal with numbers between -1 and 0
+ if (length < 4) return 0; // "-0.n"
+ string[0] = '-';
+ string[1] = '0';
+ intLength = 2;
+ }
+ else
+ {
+ intLength = utils_intToText(intPart, string, length);
+ if (intLength == 0) return 0;
+ }
+ decLength = 0;
+ if (decPart >= FLT_EPSILON)
+ {
+ double noiseFloor;
+
+ if (intLength >= length - 1) return 0;
+
+ noiseFloor = FLT_EPSILON;
+ do
+ {
+ decPart *= 10;
+ noiseFloor *= 10;
+ } while (decPart - (int64_t)decPart > noiseFloor);
+
+ decLength = utils_intToText(decPart, string + intLength, length - intLength);
+ if (decLength <= 1) return 0;
+
+ // replace the leading 1 with a dot
+ string[intLength] = '.';
+ }
+
+ return intLength + decLength;
+}
+
+size_t utils_int64ToPlainText(int64_t data,
+ uint8_t ** bufferP)
+{
+#define _PRV_STR_LENGTH 32
+ uint8_t string[_PRV_STR_LENGTH];
+ size_t length;
+
+ length = utils_intToText(data, string, _PRV_STR_LENGTH);
+ if (length == 0) return 0;
+
+ *bufferP = (uint8_t *)lwm2m_malloc(length);
+ if (NULL == *bufferP) return 0;
+
+ memcpy(*bufferP, string, length);
+
+ return length;
+}
+
+
+size_t utils_float64ToPlainText(double data,
+ uint8_t ** bufferP)
+{
+ uint8_t string[_PRV_STR_LENGTH * 2];
+ size_t length;
+
+ length = utils_floatToText(data, string, _PRV_STR_LENGTH * 2);
+ if (length == 0) return 0;
+
+ *bufferP = (uint8_t *)lwm2m_malloc(length);
+ if (NULL == *bufferP) return 0;
+
+ memcpy(*bufferP, string, length);
+
+ return length;
+}
+
+
+size_t utils_boolToPlainText(bool data,
+ uint8_t ** bufferP)
+{
+ return utils_int64ToPlainText((int64_t)(data?1:0), bufferP);
+}
+
+lwm2m_binding_t utils_stringToBinding(uint8_t * buffer,
+ size_t length)
+{
+ if (length == 0) return BINDING_UNKNOWN;
+
+ switch (buffer[0])
+ {
+ case 'U':
+ switch (length)
+ {
+ case 1:
+ return BINDING_U;
+ case 2:
+ switch (buffer[1])
+ {
+ case 'Q':
+ return BINDING_UQ;
+ case 'S':
+ return BINDING_US;
+ default:
+ break;
+ }
+ break;
+ case 3:
+ if (buffer[1] == 'Q' && buffer[2] == 'S')
+ {
+ return BINDING_UQS;
+ }
+ break;
+ default:
+ break;
+ }
+ break;
+
+ case 'S':
+ switch (length)
+ {
+ case 1:
+ return BINDING_S;
+ case 2:
+ if (buffer[1] == 'Q')
+ {
+ return BINDING_SQ;
+ }
+ break;
+ default:
+ break;
+ }
+ break;
+
+ default:
+ break;
+ }
+
+ return BINDING_UNKNOWN;
+}
+
+lwm2m_media_type_t utils_convertMediaType(coap_content_type_t type)
+{
+ // Here we just check the content type is a valid value for LWM2M
+ switch((uint16_t)type)
+ {
+ case TEXT_PLAIN:
+ return LWM2M_CONTENT_TEXT;
+ case APPLICATION_OCTET_STREAM:
+ return LWM2M_CONTENT_OPAQUE;
+ case LWM2M_CONTENT_TLV_OLD:
+ return LWM2M_CONTENT_TLV_OLD;
+ case LWM2M_CONTENT_TLV:
+ return LWM2M_CONTENT_TLV;
+ case LWM2M_CONTENT_JSON_OLD:
+ return LWM2M_CONTENT_JSON_OLD;
+ case LWM2M_CONTENT_JSON:
+ return LWM2M_CONTENT_JSON;
+ case APPLICATION_LINK_FORMAT:
+ return LWM2M_CONTENT_LINK;
+
+ default:
+ return LWM2M_CONTENT_TEXT;
+ }
+}
+
+#ifdef LWM2M_CLIENT_MODE
+lwm2m_server_t * utils_findServer(lwm2m_context_t * contextP,
+ void * fromSessionH)
+{
+ lwm2m_server_t * targetP;
+
+ targetP = contextP->serverList;
+ while (targetP != NULL
+ && false == lwm2m_session_is_equal(targetP->sessionH, fromSessionH, contextP->userData))
+ {
+ targetP = targetP->next;
+ }
+
+ return targetP;
+}
+#endif
+
+lwm2m_server_t * utils_findBootstrapServer(lwm2m_context_t * contextP,
+ void * fromSessionH)
+{
+#ifdef LWM2M_CLIENT_MODE
+
+ lwm2m_server_t * targetP;
+
+ targetP = contextP->bootstrapServerList;
+ while (targetP != NULL
+ && false == lwm2m_session_is_equal(targetP->sessionH, fromSessionH, contextP->userData))
+ {
+ targetP = targetP->next;
+ }
+
+ return targetP;
+
+#else
+
+ return NULL;
+
+#endif
+}
+
+int utils_isAltPathValid(const char * altPath)
+{
+ int i;
+
+ if (altPath == NULL) return 0;
+
+ if (altPath[0] != '/') return 0;
+
+ for (i = 1 ; altPath[i] != 0 ; i++)
+ {
+ // TODO: Support multi-segment alternative path
+ if (altPath[i] == '/') return 0;
+ // TODO: Check needs for sub-delims, ':' and '@'
+ if ((altPath[i] < 'A' || altPath[i] > 'Z') // ALPHA
+ && (altPath[i] < 'a' || altPath[i] > 'z')
+ && (altPath[i] < '0' || altPath[i] > '9') // DIGIT
+ && (altPath[i] != '-') // Other unreserved
+ && (altPath[i] != '.')
+ && (altPath[i] != '_')
+ && (altPath[i] != '~')
+ && (altPath[i] != '%')) // pct_encoded
+ {
+ return 0;
+ }
+
+ }
+ return 1;
+}
+
+// copy a string in a buffer.
+// return the number of copied bytes or -1 if the buffer is not large enough
+int utils_stringCopy(char * buffer,
+ size_t length,
+ const char * str)
+{
+ size_t i;
+
+ for (i = 0 ; i < length && str[i] != 0 ; i++)
+ {
+ buffer[i] = str[i];
+ }
+
+ if (i == length) return -1;
+
+ buffer[i] = 0;
+
+ return (int)i;
+}
+
+int utils_intCopy(char * buffer,
+ size_t length,
+ int32_t value)
+{
+#define _PRV_INT32_MAX_STR_LEN 11
+ uint8_t str[_PRV_INT32_MAX_STR_LEN];
+ size_t len;
+
+ len = utils_intToText(value, str, _PRV_INT32_MAX_STR_LEN);
+ if (len == 0) return -1;
+ if (len > length + 1) return -1;
+
+ memcpy(buffer, str, len);
+ buffer[len] = 0;
+
+ return len;
+}
+
+void utils_copyValue(void * dst,
+ const void * src,
+ size_t len)
+{
+#ifdef LWM2M_BIG_ENDIAN
+ memcpy(dst, src, len);
+#else
+#ifdef LWM2M_LITTLE_ENDIAN
+ size_t i;
+
+ for (i = 0; i < len; i++)
+ {
+ ((uint8_t *)dst)[i] = ((uint8_t *)src)[len - 1 - i];
+ }
+#endif
+#endif
+}
+
+int utils_opaqueToInt(const uint8_t * buffer,
+ size_t buffer_len,
+ int64_t * dataP)
+{
+ *dataP = 0;
+
+ switch (buffer_len)
+ {
+ case 1:
+ {
+ *dataP = (int8_t)buffer[0];
+
+ break;
+ }
+
+ case 2:
+ {
+ int16_t value;
+
+ utils_copyValue(&value, buffer, buffer_len);
+
+ *dataP = value;
+ break;
+ }
+
+ case 4:
+ {
+ int32_t value;
+
+ utils_copyValue(&value, buffer, buffer_len);
+
+ *dataP = value;
+ break;
+ }
+
+ case 8:
+ utils_copyValue(dataP, buffer, buffer_len);
+ return buffer_len;
+
+ default:
+ return 0;
+ }
+
+ return buffer_len;
+}
+
+int utils_opaqueToFloat(const uint8_t * buffer,
+ size_t buffer_len,
+ double * dataP)
+{
+ switch (buffer_len)
+ {
+ case 4:
+ {
+ float temp;
+
+ utils_copyValue(&temp, buffer, buffer_len);
+
+ *dataP = temp;
+ }
+ return 4;
+
+ case 8:
+ utils_copyValue(dataP, buffer, buffer_len);
+ return 8;
+
+ default:
+ return 0;
+ }
+}
+
+/**
+* Encode an integer value to a byte representation.
+* Returns the length of the result. For values < 0xff length is 1,
+* for values < 0xffff length is 2 and so on.
+* @param data Input value
+* @param data_buffer Result in data_buffer is in big endian encoding
+* Negative values are represented in two's complement as of
+* OMA-TS-LightweightM2M-V1_0-20160308-D, Appendix C
+*/
+size_t utils_encodeInt(int64_t data,
+ uint8_t data_buffer[_PRV_64BIT_BUFFER_SIZE])
+{
+ size_t length = 0;
+
+ memset(data_buffer, 0, _PRV_64BIT_BUFFER_SIZE);
+
+ if (data >= INT8_MIN && data <= INT8_MAX)
+ {
+ length = 1;
+ data_buffer[0] = data;
+ }
+ else if (data >= INT16_MIN && data <= INT16_MAX)
+ {
+ int16_t value;
+
+ value = data;
+ length = 2;
+ data_buffer[0] = (value >> 8) & 0xFF;
+ data_buffer[1] = value & 0xFF;
+ }
+ else if (data >= INT32_MIN && data <= INT32_MAX)
+ {
+ int32_t value;
+
+ value = data;
+ length = 4;
+ utils_copyValue(data_buffer, &value, length);
+ }
+ else if (data >= INT64_MIN && data <= INT64_MAX)
+ {
+ length = 8;
+ utils_copyValue(data_buffer, &data, length);
+ }
+
+ return length;
+}
+
+size_t utils_encodeFloat(double data,
+ uint8_t data_buffer[_PRV_64BIT_BUFFER_SIZE])
+{
+ size_t length = 0;
+
+ memset(data_buffer, 0, _PRV_64BIT_BUFFER_SIZE);
+
+ if ((data < 0.0 - (double)FLT_MAX) || (data >(double)FLT_MAX))
+ {
+ length = 8;
+ utils_copyValue(data_buffer, &data, 8);
+ }
+ else
+ {
+ float value;
+
+ length = 4;
+ value = (float)data;
+ utils_copyValue(data_buffer, &value, 4);
+ }
+
+ return length;
+}
+
+#define PRV_B64_PADDING '='
+
+static char b64Alphabet[64] =
+{
+ 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P',
+ 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f',
+ 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v',
+ 'w', 'x', 'y', 'z', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '+', '/'
+};
+
+static void prv_encodeBlock(uint8_t input[3],
+ uint8_t output[4])
+{
+ output[0] = b64Alphabet[input[0] >> 2];
+ output[1] = b64Alphabet[((input[0] & 0x03) << 4) | (input[1] >> 4)];
+ output[2] = b64Alphabet[((input[1] & 0x0F) << 2) | (input[2] >> 6)];
+ output[3] = b64Alphabet[input[2] & 0x3F];
+}
+
+static uint8_t prv_b64Revert(uint8_t value)
+{
+ if (value >= 'A' && value <= 'Z')
+ {
+ return (value - 'A');
+ }
+ if (value >= 'a' && value <= 'z')
+ {
+ return (26 + value - 'a');
+ }
+ if (value >= '0' && value <= '9')
+ {
+ return (52 + value - '0');
+ }
+ switch (value)
+ {
+ case '+':
+ return 62;
+ case '/':
+ return 63;
+ default:
+ return 0;
+ }
+}
+
+static void prv_decodeBlock(uint8_t input[4],
+ uint8_t output[3])
+{
+ uint8_t tmp[4];
+ int i;
+
+ memset(output, 0, 3);
+
+ for (i = 0; i < 4; i++)
+ {
+ tmp[i] = prv_b64Revert(input[i]);
+ }
+
+ output[0] = (tmp[0] << 2) | (tmp[1] >> 4);
+ output[1] = (tmp[1] << 4) | (tmp[2] >> 2);
+ output[2] = (tmp[2] << 6) | tmp[3];
+}
+
+static size_t prv_getBase64Size(size_t dataLen)
+{
+ size_t result_len;
+
+ result_len = 4 * (dataLen / 3);
+ if (dataLen % 3) result_len += 4;
+
+ return result_len;
+}
+
+size_t utils_base64Encode(uint8_t * dataP,
+ size_t dataLen,
+ uint8_t * bufferP,
+ size_t bufferLen)
+{
+ unsigned int data_index;
+ unsigned int result_index;
+ size_t result_len;
+
+ result_len = prv_getBase64Size(dataLen);
+
+ if (result_len > bufferLen) return 0;
+
+ data_index = 0;
+ result_index = 0;
+ while (data_index < dataLen)
+ {
+ switch (dataLen - data_index)
+ {
+ case 0:
+ // should never happen
+ break;
+ case 1:
+ bufferP[result_index] = b64Alphabet[dataP[data_index] >> 2];
+ bufferP[result_index + 1] = b64Alphabet[(dataP[data_index] & 0x03) << 4];
+ bufferP[result_index + 2] = PRV_B64_PADDING;
+ bufferP[result_index + 3] = PRV_B64_PADDING;
+ break;
+ case 2:
+ bufferP[result_index] = b64Alphabet[dataP[data_index] >> 2];
+ bufferP[result_index + 1] = b64Alphabet[(dataP[data_index] & 0x03) << 4 | (dataP[data_index + 1] >> 4)];
+ bufferP[result_index + 2] = b64Alphabet[(dataP[data_index + 1] & 0x0F) << 2];
+ bufferP[result_index + 3] = PRV_B64_PADDING;
+ break;
+ default:
+ prv_encodeBlock(dataP + data_index, bufferP + result_index);
+ break;
+ }
+ data_index += 3;
+ result_index += 4;
+ }
+
+ return result_len;
+}
+
+size_t utils_opaqueToBase64(uint8_t * dataP,
+ size_t dataLen,
+ uint8_t ** bufferP)
+{
+ size_t buffer_len;
+ size_t result_len;
+
+ buffer_len = prv_getBase64Size(dataLen);
+
+ *bufferP = (uint8_t *)lwm2m_malloc(buffer_len);
+ if (!*bufferP) return 0;
+ memset(*bufferP, 0, buffer_len);
+
+ result_len = utils_base64Encode(dataP, dataLen, *bufferP, buffer_len);
+
+ if (result_len == 0)
+ {
+ lwm2m_free(*bufferP);
+ *bufferP = NULL;
+ }
+
+ return result_len;
+}
+
+size_t utils_base64ToOpaque(uint8_t * dataP,
+ size_t dataLen,
+ uint8_t ** bufferP)
+{
+ size_t data_index;
+ size_t result_index;
+ size_t result_len;
+
+ if (dataLen % 4) return 0;
+
+ result_len = (dataLen >> 2) * 3;
+ *bufferP = (uint8_t *)lwm2m_malloc(result_len);
+ if (NULL == *bufferP) return 0;
+ memset(*bufferP, 0, result_len);
+
+ // remove padding
+ while (dataP[dataLen - 1] == PRV_B64_PADDING)
+ {
+ dataLen--;
+ }
+
+ data_index = 0;
+ result_index = 0;
+ while (data_index < dataLen)
+ {
+ prv_decodeBlock(dataP + data_index, *bufferP + result_index);
+ data_index += 4;
+ result_index += 3;
+ }
+ switch (data_index - dataLen)
+ {
+ case 0:
+ break;
+ case 2:
+ {
+ uint8_t tmp[2];
+
+ tmp[0] = prv_b64Revert(dataP[dataLen - 2]);
+ tmp[1] = prv_b64Revert(dataP[dataLen - 1]);
+
+ *bufferP[result_index - 3] = (tmp[0] << 2) | (tmp[1] >> 4);
+ *bufferP[result_index - 2] = (tmp[1] << 4);
+ result_len -= 2;
+ }
+ break;
+ case 3:
+ {
+ uint8_t tmp[3];
+
+ tmp[0] = prv_b64Revert(dataP[dataLen - 3]);
+ tmp[1] = prv_b64Revert(dataP[dataLen - 2]);
+ tmp[2] = prv_b64Revert(dataP[dataLen - 1]);
+
+ *bufferP[result_index - 3] = (tmp[0] << 2) | (tmp[1] >> 4);
+ *bufferP[result_index - 2] = (tmp[1] << 4) | (tmp[2] >> 2);
+ *bufferP[result_index - 1] = (tmp[2] << 6);
+ result_len -= 1;
+ }
+ break;
+ default:
+ // error
+ lwm2m_free(*bufferP);
+ *bufferP = NULL;
+ result_len = 0;
+ break;
+ }
+
+ return result_len;
+}
+
+lwm2m_data_type_t utils_depthToDatatype(uri_depth_t depth)
+{
+ switch (depth)
+ {
+ case URI_DEPTH_OBJECT:
+ return LWM2M_TYPE_OBJECT;
+ case URI_DEPTH_OBJECT_INSTANCE:
+ return LWM2M_TYPE_OBJECT_INSTANCE;
+ default:
+ break;
+ }
+
+ return LWM2M_TYPE_UNDEFINED;
+}