terence zhang
pick up wakaama files from https://github.com/eclipse/wakaama
Diff: core/data.c
- Revision:
- 0:c2dff8cbb91a
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/core/data.c Wed Apr 19 11:27:34 2017 +0000
@@ -0,0 +1,545 @@
+/*******************************************************************************
+*
+* 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
+* Fabien Fleutot - Please refer to git log
+* Bosch Software Innovations GmbH - Please refer to git log
+*
+*******************************************************************************/
+
+#include "internals.h"
+#include <float.h>
+
+// dataP array length is assumed to be 1.
+static int prv_textSerialize(lwm2m_data_t * dataP,
+ uint8_t ** bufferP)
+{
+ size_t res;
+
+ switch (dataP->type)
+ {
+ case LWM2M_TYPE_STRING:
+ *bufferP = (uint8_t *)lwm2m_malloc(dataP->value.asBuffer.length);
+ if (*bufferP == NULL) return 0;
+ memcpy(*bufferP, dataP->value.asBuffer.buffer, dataP->value.asBuffer.length);
+ return (int)dataP->value.asBuffer.length;
+
+ case LWM2M_TYPE_INTEGER:
+ res = utils_int64ToPlainText(dataP->value.asInteger, bufferP);
+ if (res == 0) return -1;
+ return (int)res;
+
+ case LWM2M_TYPE_FLOAT:
+ res = utils_float64ToPlainText(dataP->value.asFloat, bufferP);
+ if (res == 0) return -1;
+ return (int)res;
+
+ case LWM2M_TYPE_BOOLEAN:
+ res = utils_boolToPlainText(dataP->value.asBoolean, bufferP);
+ if (res == 0) return -1;
+ return (int)res;
+
+ case LWM2M_TYPE_OBJECT_LINK:
+ {
+ char stringBuffer[20];
+ int len = snprintf(stringBuffer, 20, "%d:%d",
+ dataP->value.asObjLink.objectId,
+ dataP->value.asObjLink.objectInstanceId);
+ *bufferP = (uint8_t *)lwm2m_malloc(len);
+ if (*bufferP == NULL) return -1;
+ memcpy(*bufferP, stringBuffer, len);
+ return len;
+ }
+ case LWM2M_TYPE_OPAQUE:
+ case LWM2M_TYPE_UNDEFINED:
+ default:
+ return -1;
+ }
+}
+
+static int prv_setBuffer(lwm2m_data_t * dataP,
+ uint8_t * buffer,
+ size_t bufferLen)
+{
+ dataP->value.asBuffer.buffer = (uint8_t *)lwm2m_malloc(bufferLen);
+ if (dataP->value.asBuffer.buffer == NULL)
+ {
+ lwm2m_data_free(1, dataP);
+ return 0;
+ }
+ dataP->value.asBuffer.length = bufferLen;
+ memcpy(dataP->value.asBuffer.buffer, buffer, bufferLen);
+
+ return 1;
+}
+
+lwm2m_data_t * lwm2m_data_new(int size)
+{
+ lwm2m_data_t * dataP;
+
+ LOG_ARG("size: %d", size);
+ if (size <= 0) return NULL;
+
+ dataP = (lwm2m_data_t *)lwm2m_malloc(size * sizeof(lwm2m_data_t));
+
+ if (dataP != NULL)
+ {
+ memset(dataP, 0, size * sizeof(lwm2m_data_t));
+ }
+
+ return dataP;
+}
+
+void lwm2m_data_free(int size,
+ lwm2m_data_t * dataP)
+{
+ int i;
+
+ LOG_ARG("size: %d", size);
+ if (size == 0 || dataP == NULL) return;
+
+ for (i = 0; i < size; i++)
+ {
+ switch (dataP[i].type)
+ {
+ case LWM2M_TYPE_MULTIPLE_RESOURCE:
+ case LWM2M_TYPE_OBJECT_INSTANCE:
+ case LWM2M_TYPE_OBJECT:
+ lwm2m_data_free(dataP[i].value.asChildren.count, dataP[i].value.asChildren.array);
+ break;
+
+ case LWM2M_TYPE_STRING:
+ case LWM2M_TYPE_OPAQUE:
+ if (dataP[i].value.asBuffer.buffer != NULL)
+ {
+ lwm2m_free(dataP[i].value.asBuffer.buffer);
+ }
+
+ default:
+ // do nothing
+ break;
+ }
+ }
+ lwm2m_free(dataP);
+}
+
+void lwm2m_data_encode_string(const char * string,
+ lwm2m_data_t * dataP)
+{
+ size_t len;
+ int res;
+
+ LOG_ARG("\"%s\"", string);
+ if (string == NULL)
+ {
+ len = 0;
+ }
+ else
+ {
+ for (len = 0; string[len] != 0; len++);
+ }
+
+ if (len == 0)
+ {
+ dataP->value.asBuffer.length = 0;
+ dataP->value.asBuffer.buffer = NULL;
+ res = 1;
+ }
+ else
+ {
+ res = prv_setBuffer(dataP, (uint8_t *)string, len);
+ }
+
+ if (res == 1)
+ {
+ dataP->type = LWM2M_TYPE_STRING;
+ }
+ else
+ {
+ dataP->type = LWM2M_TYPE_UNDEFINED;
+ }
+}
+
+void lwm2m_data_encode_opaque(uint8_t * buffer,
+ size_t length,
+ lwm2m_data_t * dataP)
+{
+ int res;
+
+ LOG_ARG("length: %d", length);
+ if (length == 0)
+ {
+ dataP->value.asBuffer.length = 0;
+ dataP->value.asBuffer.buffer = NULL;
+ res = 1;
+ }
+ else
+ {
+ res = prv_setBuffer(dataP, buffer, length);
+ }
+
+ if (res == 1)
+ {
+ dataP->type = LWM2M_TYPE_OPAQUE;
+ }
+ else
+ {
+ dataP->type = LWM2M_TYPE_UNDEFINED;
+ }
+}
+
+void lwm2m_data_encode_nstring(const char * string,
+ size_t length,
+ lwm2m_data_t * dataP)
+{
+ LOG_ARG("length: %d, string: \"%s\"", length, string);
+ lwm2m_data_encode_opaque((uint8_t *)string, length, dataP);
+
+ if (dataP->type == LWM2M_TYPE_OPAQUE)
+ {
+ dataP->type = LWM2M_TYPE_STRING;
+ }
+}
+
+void lwm2m_data_encode_int(int64_t value,
+ lwm2m_data_t * dataP)
+{
+ LOG_ARG("value: %" PRId64 "", value);
+ dataP->type = LWM2M_TYPE_INTEGER;
+ dataP->value.asInteger = value;
+}
+
+int lwm2m_data_decode_int(const lwm2m_data_t * dataP,
+ int64_t * valueP)
+{
+ int result;
+
+ LOG("Entering");
+ switch (dataP->type)
+ {
+ case LWM2M_TYPE_INTEGER:
+ *valueP = dataP->value.asInteger;
+ result = 1;
+ break;
+
+ case LWM2M_TYPE_STRING:
+ result = utils_plainTextToInt64(dataP->value.asBuffer.buffer, dataP->value.asBuffer.length, valueP);
+ break;
+
+ case LWM2M_TYPE_OPAQUE:
+ result = utils_opaqueToInt(dataP->value.asBuffer.buffer, dataP->value.asBuffer.length, valueP);
+ if (result == (int)dataP->value.asBuffer.length)
+ {
+ result = 1;
+ }
+ else
+ {
+ result = 0;
+ }
+ break;
+
+ default:
+ return 0;
+ }
+ LOG_ARG("result: %d, value: %" PRId64, result, *valueP);
+
+ return result;
+}
+
+void lwm2m_data_encode_float(double value,
+ lwm2m_data_t * dataP)
+{
+ LOG_ARG("value: %f", value);
+ dataP->type = LWM2M_TYPE_FLOAT;
+ dataP->value.asFloat = value;
+}
+
+int lwm2m_data_decode_float(const lwm2m_data_t * dataP,
+ double * valueP)
+{
+ int result;
+
+ LOG("Entering");
+ switch (dataP->type)
+ {
+ case LWM2M_TYPE_FLOAT:
+ *valueP = dataP->value.asFloat;
+ result = 1;
+ break;
+
+ case LWM2M_TYPE_INTEGER:
+ *valueP = (double)dataP->value.asInteger;
+ result = 1;
+ break;
+
+ case LWM2M_TYPE_STRING:
+ result = utils_plainTextToFloat64(dataP->value.asBuffer.buffer, dataP->value.asBuffer.length, valueP);
+ break;
+
+ case LWM2M_TYPE_OPAQUE:
+ result = utils_opaqueToFloat(dataP->value.asBuffer.buffer, dataP->value.asBuffer.length, valueP);
+ if (result == (int)dataP->value.asBuffer.length)
+ {
+ result = 1;
+ }
+ else
+ {
+ result = 0;
+ }
+ break;
+
+ default:
+ return 0;
+ }
+
+ LOG_ARG("result: %d, value: %f", result, *valueP);
+
+ return result;
+}
+
+void lwm2m_data_encode_bool(bool value,
+ lwm2m_data_t * dataP)
+{
+ LOG_ARG("value: %s", value?"true":"false");
+ dataP->type = LWM2M_TYPE_BOOLEAN;
+ dataP->value.asBoolean = value;
+}
+
+int lwm2m_data_decode_bool(const lwm2m_data_t * dataP,
+ bool * valueP)
+{
+ int result;
+
+ LOG("Entering");
+ switch (dataP->type)
+ {
+ case LWM2M_TYPE_BOOLEAN:
+ *valueP = dataP->value.asBoolean;
+ result = 1;
+ break;
+
+ case LWM2M_TYPE_STRING:
+ if (dataP->value.asBuffer.length != 1) return 0;
+
+ switch (dataP->value.asBuffer.buffer[0])
+ {
+ case '0':
+ *valueP = false;
+ result = 1;
+ break;
+ case '1':
+ *valueP = true;
+ result = 1;
+ break;
+ default:
+ result = 0;
+ break;
+ }
+ break;
+
+ case LWM2M_TYPE_OPAQUE:
+ if (dataP->value.asBuffer.length != 1) return 0;
+
+ switch (dataP->value.asBuffer.buffer[0])
+ {
+ case 0:
+ *valueP = false;
+ result = 1;
+ break;
+ case 1:
+ *valueP = true;
+ result = 1;
+ break;
+ default:
+ result = 0;
+ break;
+ }
+ break;
+
+ default:
+ result = 0;
+ break;
+ }
+
+ LOG_ARG("result: %d, value: %s", result, *valueP ? "true" : "false");
+
+ return result;
+}
+
+void lwm2m_data_encode_objlink(uint16_t objectId,
+ uint16_t objectInstanceId,
+ lwm2m_data_t * dataP)
+{
+ LOG_ARG("value: %d/%d", objectId, objectInstanceId);
+ dataP->type = LWM2M_TYPE_OBJECT_LINK;
+ dataP->value.asObjLink.objectId = objectId;
+ dataP->value.asObjLink.objectInstanceId = objectInstanceId;
+}
+
+void lwm2m_data_include(lwm2m_data_t * subDataP,
+ size_t count,
+ lwm2m_data_t * dataP)
+{
+ LOG_ARG("count: %d", count);
+ if (subDataP == NULL || count == 0) return;
+
+ switch (subDataP[0].type)
+ {
+ case LWM2M_TYPE_STRING:
+ case LWM2M_TYPE_OPAQUE:
+ case LWM2M_TYPE_INTEGER:
+ case LWM2M_TYPE_FLOAT:
+ case LWM2M_TYPE_BOOLEAN:
+ case LWM2M_TYPE_OBJECT_LINK:
+ case LWM2M_TYPE_MULTIPLE_RESOURCE:
+ dataP->type = LWM2M_TYPE_OBJECT_INSTANCE;
+ break;
+ case LWM2M_TYPE_OBJECT_INSTANCE:
+ dataP->type = LWM2M_TYPE_OBJECT;
+ break;
+ default:
+ return;
+ }
+ dataP->value.asChildren.count = count;
+ dataP->value.asChildren.array = subDataP;
+}
+
+void lwm2m_data_encode_instances(lwm2m_data_t * subDataP,
+ size_t count,
+ lwm2m_data_t * dataP)
+{
+ LOG_ARG("count: %d", count);
+ lwm2m_data_include(subDataP, count, dataP);
+ dataP->type = LWM2M_TYPE_MULTIPLE_RESOURCE;
+}
+
+int lwm2m_data_parse(lwm2m_uri_t * uriP,
+ uint8_t * buffer,
+ size_t bufferLen,
+ lwm2m_media_type_t format,
+ lwm2m_data_t ** dataP)
+{
+ LOG_ARG("format: %s, bufferLen: %d", STR_MEDIA_TYPE(format), bufferLen);
+ LOG_URI(uriP);
+ switch (format)
+ {
+ case LWM2M_CONTENT_TEXT:
+ if (!LWM2M_URI_IS_SET_RESOURCE(uriP)) return 0;
+ *dataP = lwm2m_data_new(1);
+ if (*dataP == NULL) return 0;
+ (*dataP)->id = uriP->resourceId;
+ (*dataP)->type = LWM2M_TYPE_STRING;
+ return prv_setBuffer(*dataP, buffer, bufferLen);
+
+ case LWM2M_CONTENT_OPAQUE:
+ if (!LWM2M_URI_IS_SET_RESOURCE(uriP)) return 0;
+ *dataP = lwm2m_data_new(1);
+ if (*dataP == NULL) return 0;
+ (*dataP)->id = uriP->resourceId;
+ (*dataP)->type = LWM2M_TYPE_OPAQUE;
+ return prv_setBuffer(*dataP, buffer, bufferLen);
+
+#ifdef LWM2M_OLD_CONTENT_FORMAT_SUPPORT
+ case LWM2M_CONTENT_TLV_OLD:
+#endif
+ case LWM2M_CONTENT_TLV:
+ return tlv_parse(buffer, bufferLen, dataP);
+
+#ifdef LWM2M_SUPPORT_JSON
+#ifdef LWM2M_OLD_CONTENT_FORMAT_SUPPORT
+ case LWM2M_CONTENT_JSON_OLD:
+#endif
+ case LWM2M_CONTENT_JSON:
+ return json_parse(uriP, buffer, bufferLen, dataP);
+#endif
+
+ default:
+ return 0;
+ }
+}
+
+int lwm2m_data_serialize(lwm2m_uri_t * uriP,
+ int size,
+ lwm2m_data_t * dataP,
+ lwm2m_media_type_t * formatP,
+ uint8_t ** bufferP)
+{
+ LOG_URI(uriP);
+ LOG_ARG("size: %d, formatP: %s", size, STR_MEDIA_TYPE(*formatP));
+
+ // Check format
+ if (*formatP == LWM2M_CONTENT_TEXT
+ || *formatP == LWM2M_CONTENT_OPAQUE)
+ {
+ if (size != 1
+ || (uriP != NULL && !LWM2M_URI_IS_SET_RESOURCE(uriP))
+ || dataP->type == LWM2M_TYPE_OBJECT
+ || dataP->type == LWM2M_TYPE_OBJECT_INSTANCE
+ || dataP->type == LWM2M_TYPE_MULTIPLE_RESOURCE)
+ {
+#ifdef LWM2M_SUPPORT_JSON
+ *formatP = LWM2M_CONTENT_JSON;
+#else
+ *formatP = LWM2M_CONTENT_TLV;
+#endif
+ }
+ }
+
+ if (*formatP == LWM2M_CONTENT_TEXT
+ && dataP->type == LWM2M_TYPE_OPAQUE)
+ {
+ *formatP = LWM2M_CONTENT_OPAQUE;
+ }
+ LOG_ARG("Final format: %s", STR_MEDIA_TYPE(*formatP));
+
+ switch (*formatP)
+ {
+ case LWM2M_CONTENT_TEXT:
+ return prv_textSerialize(dataP, bufferP);
+
+ case LWM2M_CONTENT_OPAQUE:
+ *bufferP = (uint8_t *)lwm2m_malloc(dataP->value.asBuffer.length);
+ if (*bufferP == NULL) return -1;
+ memcpy(*bufferP, dataP->value.asBuffer.buffer, dataP->value.asBuffer.length);
+ return (int)dataP->value.asBuffer.length;
+
+ case LWM2M_CONTENT_TLV:
+ {
+ bool isResourceInstance;
+
+ if (uriP != NULL && LWM2M_URI_IS_SET_RESOURCE(uriP)
+ && (size != 1 || dataP->id != uriP->resourceId))
+ {
+ isResourceInstance = true;
+ }
+ else
+ {
+ isResourceInstance = false;
+ }
+ return tlv_serialize(isResourceInstance, size, dataP, bufferP);
+ }
+
+#ifdef LWM2M_CLIENT_MODE
+ case LWM2M_CONTENT_LINK:
+ return discover_serialize(NULL, uriP, NULL, size, dataP, bufferP);
+#endif
+#ifdef LWM2M_SUPPORT_JSON
+ case LWM2M_CONTENT_JSON:
+ return json_serialize(uriP, size, dataP, bufferP);
+#endif
+
+ default:
+ return -1;
+ }
+}
+