enh: Update cJSON to 1.7.13 (#978)

This is a modified version of cJSON with support for 64-bit integers.  This change pulls in some bug fixes and security fixes.  It also fixes some compiler warnings on ILP32, caused by the way that we imported the previous cJSON (fixes inspired by #855).

2 files changed, 723 insertions, 240 deletions

diff --git a/src/cjson.c b/src/cjson.c
index e692e69..bf0b8b4 100644
--- a/src/cjson.c
+++ b/src/cjson.c
@@ -23,23 +23,39 @@
 /* cJSON */
 /* JSON parser in C. */
 
+/* disable warnings about old C89 functions in MSVC */
+#if !defined(_CRT_SECURE_NO_DEPRECATE) && defined(_MSC_VER)
+#define _CRT_SECURE_NO_DEPRECATE
+#endif
+
 #ifdef __GNUC__
 #pragma GCC visibility push(default)
 #endif
+#if defined(_MSC_VER)
+#pragma warning (push)
+/* disable warning about single line comments in system headers */
+#pragma warning (disable : 4001)
+#endif
 
 #include <string.h>
 #include <stdio.h>
 #include <math.h>
 #include <stdlib.h>
-#include <float.h>
 #include <limits.h>
 #include <ctype.h>
+#include <float.h>
 #ifdef HAVE_STDINT_H
 #include <stdint.h>
 #endif
 #include <sys/types.h>
+
+#ifdef ENABLE_LOCALES
 #include <locale.h>
+#endif
 
+#if defined(_MSC_VER)
+#pragma warning (pop)
+#endif
 #ifdef __GNUC__
 #pragma GCC visibility pop
 #endif
@@ -57,6 +73,18 @@
 #endif
 #define false ((cJSON_bool)0)
 
+/* define isnan and isinf for ANSI C, if in C99 or above, isnan and isinf has been defined in math.h */
+#ifndef isinf
+#define isinf(d) (isnan((d - d)) && !isnan(d))
+#endif
+#ifndef isnan
+#define isnan(d) (d != d)
+#endif
+
+#ifndef NAN
+#define NAN 0.0/0.0
+#endif
+
 typedef struct {
     const unsigned char *json;
     size_t position;
@@ -75,8 +103,28 @@ CJSON_PUBLIC(const char *) cJSON_GetErrorPtr(void)
     return (const char*) (global_error.json + global_error.position);
 }
 
+CJSON_PUBLIC(char *) cJSON_GetStringValue(cJSON *item) 
+{
+    if (!cJSON_IsString(item)) 
+    {
+        return NULL;
+    }
+
+    return item->valuestring;
+}
+
+CJSON_PUBLIC(double) cJSON_GetNumberValue(cJSON *item) 
+{
+    if (!cJSON_IsNumber(item)) 
+    {
+        return NAN;
+    }
+
+    return item->valuedouble;
+}
+
 /* This is a safeguard to prevent copy-pasters from using incompatible C and header files */
-#if (CJSON_VERSION_MAJOR != 1) || (CJSON_VERSION_MINOR != 5) || (CJSON_VERSION_PATCH != 2)
+#if (CJSON_VERSION_MAJOR != 1) || (CJSON_VERSION_MINOR != 7) || (CJSON_VERSION_PATCH != 13)
     #error cJSON.h and cJSON.c have different versions. Make sure that both have the same.
 #endif
 
@@ -114,12 +162,35 @@ static int case_insensitive_strcmp(const unsigned char *string1, const unsigned
 
 typedef struct internal_hooks
 {
-    void *(*allocate)(size_t size);
-    void (*deallocate)(void *pointer);
-    void *(*reallocate)(void *pointer, size_t size);
+    void *(CJSON_CDECL *allocate)(size_t size);
+    void (CJSON_CDECL *deallocate)(void *pointer);
+    void *(CJSON_CDECL *reallocate)(void *pointer, size_t size);
 } internal_hooks;
 
-static internal_hooks global_hooks = { malloc, free, realloc };
+#if defined(_MSC_VER)
+/* work around MSVC error C2322: '...' address of dllimport '...' is not static */
+static void * CJSON_CDECL internal_malloc(size_t size)
+{
+    return malloc(size);
+}
+static void CJSON_CDECL internal_free(void *pointer)
+{
+    free(pointer);
+}
+static void * CJSON_CDECL internal_realloc(void *pointer, size_t size)
+{
+    return realloc(pointer, size);
+}
+#else
+#define internal_malloc malloc
+#define internal_free free
+#define internal_realloc realloc
+#endif
+
+/* strlen of character literals resolved at compile time */
+#define static_strlen(string_literal) (sizeof(string_literal) - sizeof(""))
+
+static internal_hooks global_hooks = { internal_malloc, internal_free, internal_realloc };
 
 static unsigned char* cJSON_strdup(const unsigned char* string, const internal_hooks * const hooks)
 {
@@ -132,7 +203,8 @@ static unsigned char* cJSON_strdup(const unsigned char* string, const internal_h
     }
 
     length = strlen((const char*)string) + sizeof("");
-    if (!(copy = (unsigned char*)hooks->allocate(length)))
+    copy = (unsigned char*)hooks->allocate(length);
+    if (copy == NULL)
     {
         return NULL;
     }
@@ -211,8 +283,12 @@ CJSON_PUBLIC(void) cJSON_Delete(cJSON *item)
 /* get the decimal point character of the current locale */
 static unsigned char get_decimal_point(void)
 {
+#ifdef ENABLE_LOCALES
     struct lconv *lconv = localeconv();
     return (unsigned char) lconv->decimal_point[0];
+#else
+    return '.';
+#endif
 }
 
 typedef struct
@@ -226,7 +302,6 @@ typedef struct
 
 /* check if the given size is left to read in a given parse buffer (starting with 1) */
 #define can_read(buffer, size) ((buffer != NULL) && (((buffer)->offset + size) <= (buffer)->length))
-#define cannot_read(buffer, size) (!can_read(buffer, size))
 /* check if the buffer can be accessed at the given index (starting with 0) */
 #define can_access_at_index(buffer, index) ((buffer != NULL) && (((buffer)->offset + index) < (buffer)->length))
 #define cannot_access_at_index(buffer, index) (!can_access_at_index(buffer, index))
@@ -295,7 +370,7 @@ loop_end:
     {
         item->valueint = LLONG_MAX;
     }
-    else if (number <= LLONG_MIN)
+    else if (number <= (double)LLONG_MIN)
     {
         item->valueint = LLONG_MIN;
     }
@@ -317,7 +392,7 @@ CJSON_PUBLIC(double) cJSON_SetNumberHelper(cJSON *object, double number)
     {
         object->valueint = LLONG_MAX;
     }
-    else if (number <= LLONG_MIN)
+    else if (number <= (double)LLONG_MIN)
     {
         object->valueint = LLONG_MIN;
     }
@@ -329,6 +404,33 @@ CJSON_PUBLIC(double) cJSON_SetNumberHelper(cJSON *object, double number)
     return object->valuedouble = number;
 }
 
+CJSON_PUBLIC(char*) cJSON_SetValuestring(cJSON *object, const char *valuestring)
+{
+    char *copy = NULL;
+    /* if object's type is not cJSON_String or is cJSON_IsReference, it should not set valuestring */
+    if (!(object->type & cJSON_String) || (object->type & cJSON_IsReference))
+    {
+        return NULL;
+    }
+    if (strlen(valuestring) <= strlen(object->valuestring))
+    {
+        strcpy(object->valuestring, valuestring);
+        return object->valuestring;
+    }
+    copy = (char*) cJSON_strdup((const unsigned char*)valuestring, &global_hooks);
+    if (copy == NULL)
+    {
+        return NULL;
+    }
+    if (object->valuestring != NULL)
+    {
+        cJSON_free(object->valuestring);
+    }
+    object->valuestring = copy;
+
+    return copy;
+}
+
 typedef struct
 {
     unsigned char *buffer;
@@ -357,9 +459,9 @@ static unsigned char* ensure(printbuffer * const p, size_t needed)
         return NULL;
     }
 
-    if (needed > LLONG_MAX)
+    if (needed > SIZE_MAX)
     {
-        /* sizes bigger than LLONG_MAX are currently not supported */
+        /* sizes bigger than SIZE_MAX are currently not supported */
         return NULL;
     }
 
@@ -374,12 +476,12 @@ static unsigned char* ensure(printbuffer * const p, size_t needed)
     }
 
     /* calculate new buffer size */
-    if (needed > (LLONG_MAX / 2))
+    if (needed > (SIZE_MAX / 2))
     {
-        /* overflow of int, use LLONG_MAX if possible */
-        if (needed <= LLONG_MAX)
+        /* overflow of int, use SIZE_MAX if possible */
+        if (needed <= SIZE_MAX)
         {
-            newsize = LLONG_MAX;
+            newsize = SIZE_MAX;
         }
         else
         {
@@ -395,6 +497,14 @@ static unsigned char* ensure(printbuffer * const p, size_t needed)
     {
         /* reallocate with realloc if available */
         newbuffer = (unsigned char*)p->hooks.reallocate(p->buffer, newsize);
+        if (newbuffer == NULL)
+        {
+            p->hooks.deallocate(p->buffer);
+            p->length = 0;
+            p->buffer = NULL;
+
+            return NULL;
+        }
     }
     else
     {
@@ -433,6 +543,13 @@ static void update_offset(printbuffer * const buffer)
     buffer->offset += strlen((const char*)buffer_pointer);
 }
 
+/* securely comparison of floating-point variables */
+static cJSON_bool compare_double(double a, double b)
+{
+    double maxVal = fabs(a) > fabs(b) ? fabs(a) : fabs(b);
+    return (fabs(a - b) <= maxVal * DBL_EPSILON);
+}
+
 /* Render the number nicely from the given item into a string. */
 static cJSON_bool print_number(const cJSON * const item, printbuffer * const output_buffer)
 {
@@ -440,9 +557,9 @@ static cJSON_bool print_number(const cJSON * const item, printbuffer * const out
     double d = item->valuedouble;
     int length = 0;
     size_t i = 0;
-    unsigned char number_buffer[26]; /* temporary buffer to print the number into */
+    unsigned char number_buffer[26] = {0}; /* temporary buffer to print the number into */
     unsigned char decimal_point = get_decimal_point();
-    double test;
+    double test = 0.0;
 
     if (output_buffer == NULL)
     {
@@ -450,7 +567,7 @@ static cJSON_bool print_number(const cJSON * const item, printbuffer * const out
     }
 
     /* This checks for NaN and Infinity */
-    if ((d * 0) != 0)
+    if (isnan(d) || isinf(d))
     {
         length = sprintf((char*)number_buffer, "null");
     }
@@ -460,21 +577,21 @@ static cJSON_bool print_number(const cJSON * const item, printbuffer * const out
         length = sprintf((char*)number_buffer, "%1.15g", d);
 
         /* Check whether the original double can be recovered */
-        if ((sscanf((char*)number_buffer, "%lg", &test) != 1) || ((double)test != d))
+        if ((sscanf((char*)number_buffer, "%lg", &test) != 1) || !compare_double((double)test, d))
         {
             /* If not, print with 17 decimal places of precision */
             length = sprintf((char*)number_buffer, "%1.17g", d);
         }
     }
 
-    /* sprintf failed or buffer overrun occured */
+    /* sprintf failed or buffer overrun occurred */
     if ((length < 0) || (length > (int)(sizeof(number_buffer) - 1)))
     {
         return false;
     }
 
     /* reserve appropriate space in the output */
-    output_pointer = ensure(output_buffer, (size_t)length);
+    output_pointer = ensure(output_buffer, (size_t)length + sizeof(""));
     if (output_pointer == NULL)
     {
         return false;
@@ -930,6 +1047,11 @@ static parse_buffer *buffer_skip_whitespace(parse_buffer * const buffer)
         return NULL;
     }
 
+    if (cannot_access_at_index(buffer, 0))
+    {
+        return buffer;
+    }
+
     while (can_access_at_index(buffer, 0) && (buffer_at_offset(buffer)[0] <= 32))
     {
        buffer->offset++;
@@ -943,9 +1065,40 @@ static parse_buffer *buffer_skip_whitespace(parse_buffer * const buffer)
     return buffer;
 }
 
-/* Parse an object - create a new root, and populate. */
+/* skip the UTF-8 BOM (byte order mark) if it is at the beginning of a buffer */
+static parse_buffer *skip_utf8_bom(parse_buffer * const buffer)
+{
+    if ((buffer == NULL) || (buffer->content == NULL) || (buffer->offset != 0))
+    {
+        return NULL;
+    }
+
+    if (can_access_at_index(buffer, 4) && (strncmp((const char*)buffer_at_offset(buffer), "\xEF\xBB\xBF", 3) == 0))
+    {
+        buffer->offset += 3;
+    }
+
+    return buffer;
+}
+
 CJSON_PUBLIC(cJSON *) cJSON_ParseWithOpts(const char *value, const char **return_parse_end, cJSON_bool require_null_terminated)
 {
+    size_t buffer_length;
+
+    if (NULL == value)
+    {
+        return NULL;
+    }
+
+    /* Adding null character size due to require_null_terminated. */
+    buffer_length = strlen(value) + sizeof("");
+
+    return cJSON_ParseWithLengthOpts(value, buffer_length, return_parse_end, require_null_terminated);
+}
+
+/* Parse an object - create a new root, and populate. */
+CJSON_PUBLIC(cJSON *) cJSON_ParseWithLengthOpts(const char *value, size_t buffer_length, const char **return_parse_end, cJSON_bool require_null_terminated)
+{
     parse_buffer buffer = { 0, 0, 0, 0, { 0, 0, 0 } };
     cJSON *item = NULL;
 
@@ -953,13 +1106,13 @@ CJSON_PUBLIC(cJSON *) cJSON_ParseWithOpts(const char *value, const char **return
     global_error.json = NULL;
     global_error.position = 0;
 
-    if (value == NULL)
+    if (value == NULL || 0 == buffer_length)
     {
         goto fail;
     }
 
     buffer.content = (const unsigned char*)value;
-    buffer.length = strlen((const char*)value) + sizeof("");
+    buffer.length = buffer_length; 
     buffer.offset = 0;
     buffer.hooks = global_hooks;
 
@@ -969,7 +1122,7 @@ CJSON_PUBLIC(cJSON *) cJSON_ParseWithOpts(const char *value, const char **return
         goto fail;
     }
 
-    if (!parse_value(item, buffer_skip_whitespace(&buffer)))
+    if (!parse_value(item, buffer_skip_whitespace(skip_utf8_bom(&buffer))))
     {
         /* parse failure. ep is set. */
         goto fail;
@@ -1016,10 +1169,8 @@ fail:
         {
             *return_parse_end = (const char*)local_error.json + local_error.position;
         }
-        else
-        {
-            global_error = local_error;
-        }
+
+        global_error = local_error;
     }
 
     return NULL;
@@ -1031,17 +1182,24 @@ CJSON_PUBLIC(cJSON *) cJSON_Parse(const char *value)
     return cJSON_ParseWithOpts(value, 0, 0);
 }
 
-#define cjson_min(a, b) ((a < b) ? a : b)
+CJSON_PUBLIC(cJSON *) cJSON_ParseWithLength(const char *value, size_t buffer_length)
+{
+    return cJSON_ParseWithLengthOpts(value, buffer_length, 0, 0);
+}
+
+#define cjson_min(a, b) (((a) < (b)) ? (a) : (b))
 
 static unsigned char *print(const cJSON * const item, cJSON_bool format, const internal_hooks * const hooks)
 {
+    static const size_t default_buffer_size = 256;
     printbuffer buffer[1];
     unsigned char *printed = NULL;
 
     memset(buffer, 0, sizeof(buffer));
 
     /* create buffer */
-    buffer->buffer = (unsigned char*) hooks->allocate(256);
+    buffer->buffer = (unsigned char*) hooks->allocate(default_buffer_size);
+    buffer->length = default_buffer_size;
     buffer->format = format;
     buffer->hooks = *hooks;
     if (buffer->buffer == NULL)
@@ -1059,11 +1217,11 @@ static unsigned char *print(const cJSON * const item, cJSON_bool format, const i
     /* check if reallocate is available */
     if (hooks->reallocate != NULL)
     {
-        printed = (unsigned char*) hooks->reallocate(buffer->buffer, buffer->length);
-        buffer->buffer = NULL;
+        printed = (unsigned char*) hooks->reallocate(buffer->buffer, buffer->offset + 1);
         if (printed == NULL) {
             goto fail;
         }
+        buffer->buffer = NULL;
     }
     else /* otherwise copy the JSON over to a new buffer */
     {
@@ -1129,26 +1287,27 @@ CJSON_PUBLIC(char *) cJSON_PrintBuffered(const cJSON *item, int prebuffer, cJSON
 
     if (!print_value(item, &p))
     {
+        global_hooks.deallocate(p.buffer);
         return NULL;
     }
 
     return (char*)p.buffer;
 }
 
-CJSON_PUBLIC(cJSON_bool) cJSON_PrintPreallocated(cJSON *item, char *buf, const int len, const cJSON_bool fmt)
+CJSON_PUBLIC(cJSON_bool) cJSON_PrintPreallocated(cJSON *item, char *buffer, const int length, const cJSON_bool format)
 {
     printbuffer p = { 0, 0, 0, 0, 0, 0, { 0, 0, 0 } };
 
-    if (len < 0)
+    if ((length < 0) || (buffer == NULL))
     {
         return false;
     }
 
-    p.buffer = (unsigned char*)buf;
-    p.length = (size_t)len;
+    p.buffer = (unsigned char*)buffer;
+    p.length = (size_t)length;
     p.offset = 0;
     p.noalloc = true;
-    p.format = fmt;
+    p.format = format;
     p.hooks = global_hooks;
 
     return print_value(item, &p);
@@ -1206,7 +1365,6 @@ static cJSON_bool parse_value(cJSON * const item, parse_buffer * const input_buf
         return parse_object(item, input_buffer);
     }
 
-
     return false;
 }
 
@@ -1257,10 +1415,6 @@ static cJSON_bool print_value(const cJSON * const item, printbuffer * const outp
             size_t raw_length = 0;
             if (item->valuestring == NULL)
             {
-                if (!output_buffer->noalloc)
-                {
-                    output_buffer->hooks.deallocate(output_buffer->buffer);
-                }
                 return false;
             }
 
@@ -1506,7 +1660,7 @@ static cJSON_bool parse_object(cJSON * const item, parse_buffer * const input_bu
         buffer_skip_whitespace(input_buffer);
         if (!parse_string(current_item, input_buffer))
         {
-            goto fail; /* faile to parse name */
+            goto fail; /* failed to parse name */
         }
         buffer_skip_whitespace(input_buffer);
 
@@ -1626,7 +1780,7 @@ static cJSON_bool print_object(const cJSON * const item, printbuffer * const out
         update_offset(output_buffer);
 
         /* print comma if not last */
-        length = (size_t) ((output_buffer->format ? 1 : 0) + (current_item->next ? 1 : 0));
+        length = ((size_t)(output_buffer->format ? 1 : 0) + (size_t)(current_item->next ? 1 : 0));
         output_pointer = ensure(output_buffer, length + 1);
         if (output_pointer == NULL)
         {
@@ -1670,17 +1824,25 @@ static cJSON_bool print_object(const cJSON * const item, printbuffer * const out
 /* Get Array size/item / object item. */
 CJSON_PUBLIC(int) cJSON_GetArraySize(const cJSON *array)
 {
-    cJSON *c = array->child;
-    size_t i = 0;
-    while(c)
+    cJSON *child = NULL;
+    size_t size = 0;
+
+    if (array == NULL)
+    {
+        return 0;
+    }
+
+    child = array->child;
+
+    while(child != NULL)
     {
-        i++;
-        c = c->next;
+        size++;
+        child = child->next;
     }
 
     /* FIXME: Can overflow here. Cannot be fixed without breaking the API */
 
-    return (int)i;
+    return (int)size;
 }
 
 static cJSON* get_array_item(const cJSON *array, size_t index)
@@ -1724,7 +1886,7 @@ static cJSON *get_object_item(const cJSON * const object, const char * const nam
     current_element = object->child;
     if (case_sensitive)
     {
-        while ((current_element != NULL) && (strcmp(name, current_element->string) != 0))
+        while ((current_element != NULL) && (current_element->string != NULL) && (strcmp(name, current_element->string) != 0))
         {
             current_element = current_element->next;
         }
@@ -1737,6 +1899,10 @@ static cJSON *get_object_item(const cJSON * const object, const char * const nam
         }
     }
 
+    if ((current_element == NULL) || (current_element->string == NULL)) {
+        return NULL;
+    }
+
     return current_element;
 }
 
@@ -1765,88 +1931,263 @@ static void suffix_object(cJSON *prev, cJSON *item)
 /* Utility for handling references. */
 static cJSON *create_reference(const cJSON *item, const internal_hooks * const hooks)
 {
-    cJSON *ref = cJSON_New_Item(hooks);
-    if (!ref)
+    cJSON *reference = NULL;
+    if (item == NULL)
     {
         return NULL;
     }
-    memcpy(ref, item, sizeof(cJSON));
-    ref->string = NULL;
-    ref->type |= cJSON_IsReference;
-    ref->next = ref->prev = NULL;
-    return ref;
+
+    reference = cJSON_New_Item(hooks);
+    if (reference == NULL)
+    {
+        return NULL;
+    }
+
+    memcpy(reference, item, sizeof(cJSON));
+    reference->string = NULL;
+    reference->type |= cJSON_IsReference;
+    reference->next = reference->prev = NULL;
+    return reference;
 }
 
-/* Add item to array/object. */
-CJSON_PUBLIC(void) cJSON_AddItemToArray(cJSON *array, cJSON *item)
+static cJSON_bool add_item_to_array(cJSON *array, cJSON *item)
 {
     cJSON *child = NULL;
 
-    if ((item == NULL) || (array == NULL))
+    if ((item == NULL) || (array == NULL) || (array == item))
     {
-        return;
+        return false;
     }
 
     child = array->child;
-
+    /*
+     * To find the last item in array quickly, we use prev in array
+     */
     if (child == NULL)
     {
         /* list is empty, start new one */
         array->child = item;
+        item->prev = item;
+        item->next = NULL;
     }
     else
     {
         /* append to the end */
-        while (child->next)
+        if (child->prev)
         {
-            child = child->next;
+            suffix_object(child->prev, item);
+            array->child->prev = item;
+        }
+        else
+        {
+            while (child->next)
+            {
+                child = child->next;
+            }
+            suffix_object(child, item);
+            array->child->prev = item;
         }
-        suffix_object(child, item);
     }
+
+    return true;
 }
 
-CJSON_PUBLIC(void) cJSON_AddItemToObject(cJSON *object, const char *string, cJSON *item)
+/* Add item to array/object. */
+CJSON_PUBLIC(cJSON_bool) cJSON_AddItemToArray(cJSON *array, cJSON *item)
 {
-    /* call cJSON_AddItemToObjectCS for code reuse */
-    cJSON_AddItemToObjectCS(object, (char*)cJSON_strdup((const unsigned char*)string, &global_hooks), item);
-    /* remove cJSON_StringIsConst flag */
-    item->type &= ~cJSON_StringIsConst;
+    return add_item_to_array(array, item);
 }
 
-#if defined (__clang__) || ((__GNUC__)  && ((__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ > 5))))
+#if defined(__clang__) || (defined(__GNUC__)  && ((__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ > 5))))
     #pragma GCC diagnostic push
 #endif
 #ifdef __GNUC__
 #pragma GCC diagnostic ignored "-Wcast-qual"
 #endif
+/* helper function to cast away const */
+static void* cast_away_const(const void* string)
+{
+    return (void*)string;
+}
+#if defined(__clang__) || (defined(__GNUC__)  && ((__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ > 5))))
+    #pragma GCC diagnostic pop
+#endif
+
+
+static cJSON_bool add_item_to_object(cJSON * const object, const char * const string, cJSON * const item, const internal_hooks * const hooks, const cJSON_bool constant_key)
+{
+    char *new_key = NULL;
+    int new_type = cJSON_Invalid;
+
+    if ((object == NULL) || (string == NULL) || (item == NULL) || (object == item))
+    {
+        return false;
+    }
+
+    if (constant_key)
+    {
+        new_key = (char*)cast_away_const(string);
+        new_type = item->type | cJSON_StringIsConst;
+    }
+    else
+    {
+        new_key = (char*)cJSON_strdup((const unsigned char*)string, hooks);
+        if (new_key == NULL)
+        {
+            return false;
+        }
+
+        new_type = item->type & ~cJSON_StringIsConst;
+    }
+
+    if (!(item->type & cJSON_StringIsConst) && (item->string != NULL))
+    {
+        hooks->deallocate(item->string);
+    }
+
+    item->string = new_key;
+    item->type = new_type;
+
+    return add_item_to_array(object, item);
+}
+
+CJSON_PUBLIC(cJSON_bool) cJSON_AddItemToObject(cJSON *object, const char *string, cJSON *item)
+{
+    return add_item_to_object(object, string, item, &global_hooks, false);
+}
 
 /* Add an item to an object with constant string as key */
-CJSON_PUBLIC(void) cJSON_AddItemToObjectCS(cJSON *object, const char *string, cJSON *item)
+CJSON_PUBLIC(cJSON_bool) cJSON_AddItemToObjectCS(cJSON *object, const char *string, cJSON *item)
 {
-    if (!item)
+    return add_item_to_object(object, string, item, &global_hooks, true);
+}
+
+CJSON_PUBLIC(cJSON_bool) cJSON_AddItemReferenceToArray(cJSON *array, cJSON *item)
+{
+    if (array == NULL)
     {
-        return;
+        return false;
     }
-    if (!(item->type & cJSON_StringIsConst) && item->string)
+
+    return add_item_to_array(array, create_reference(item, &global_hooks));
+}
+
+CJSON_PUBLIC(cJSON_bool) cJSON_AddItemReferenceToObject(cJSON *object, const char *string, cJSON *item)
+{
+    if ((object == NULL) || (string == NULL))
     {
-        global_hooks.deallocate(item->string);
+        return false;
     }
-    item->string = (char*)string;
-    item->type |= cJSON_StringIsConst;
-    cJSON_AddItemToArray(object, item);
+
+    return add_item_to_object(object, string, create_reference(item, &global_hooks), &global_hooks, false);
+}
+
+CJSON_PUBLIC(cJSON*) cJSON_AddNullToObject(cJSON * const object, const char * const name)
+{
+    cJSON *null = cJSON_CreateNull();
+    if (add_item_to_object(object, name, null, &global_hooks, false))
+    {
+        return null;
+    }
+
+    cJSON_Delete(null);
+    return NULL;
+}
+
+CJSON_PUBLIC(cJSON*) cJSON_AddTrueToObject(cJSON * const object, const char * const name)
+{
+    cJSON *true_item = cJSON_CreateTrue();
+    if (add_item_to_object(object, name, true_item, &global_hooks, false))
+    {
+        return true_item;
+    }
+
+    cJSON_Delete(true_item);
+    return NULL;
+}
+
+CJSON_PUBLIC(cJSON*) cJSON_AddFalseToObject(cJSON * const object, const char * const name)
+{
+    cJSON *false_item = cJSON_CreateFalse();
+    if (add_item_to_object(object, name, false_item, &global_hooks, false))
+    {
+        return false_item;
+    }
+
+    cJSON_Delete(false_item);
+    return NULL;
 }
-#if defined (__clang__) || ((__GNUC__)  && ((__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ > 5))))
-    #pragma GCC diagnostic pop
-#endif
 
-CJSON_PUBLIC(void) cJSON_AddItemReferenceToArray(cJSON *array, cJSON *item)
+CJSON_PUBLIC(cJSON*) cJSON_AddBoolToObject(cJSON * const object, const char * const name, const cJSON_bool boolean)
 {
-    cJSON_AddItemToArray(array, create_reference(item, &global_hooks));
+    cJSON *bool_item = cJSON_CreateBool(boolean);
+    if (add_item_to_object(object, name, bool_item, &global_hooks, false))
+    {
+        return bool_item;
+    }
+
+    cJSON_Delete(bool_item);
+    return NULL;
+}
+
+CJSON_PUBLIC(cJSON*) cJSON_AddNumberToObject(cJSON * const object, const char * const name, const double number)
+{
+    cJSON *number_item = cJSON_CreateNumber(number);
+    if (add_item_to_object(object, name, number_item, &global_hooks, false))
+    {
+        return number_item;
+    }
+
+    cJSON_Delete(number_item);
+    return NULL;
 }
 
-CJSON_PUBLIC(void) cJSON_AddItemReferenceToObject(cJSON *object, const char *string, cJSON *item)
+CJSON_PUBLIC(cJSON*) cJSON_AddStringToObject(cJSON * const object, const char * const name, const char * const string)
 {
-    cJSON_AddItemToObject(object, string, create_reference(item, &global_hooks));
+    cJSON *string_item = cJSON_CreateString(string);
+    if (add_item_to_object(object, name, string_item, &global_hooks, false))
+    {
+        return string_item;
+    }
+
+    cJSON_Delete(string_item);
+    return NULL;
+}
+
+CJSON_PUBLIC(cJSON*) cJSON_AddRawToObject(cJSON * const object, const char * const name, const char * const raw)
+{
+    cJSON *raw_item = cJSON_CreateRaw(raw);
+    if (add_item_to_object(object, name, raw_item, &global_hooks, false))
+    {
+        return raw_item;
+    }
+
+    cJSON_Delete(raw_item);
+    return NULL;
+}
+
+CJSON_PUBLIC(cJSON*) cJSON_AddObjectToObject(cJSON * const object, const char * const name)
+{
+    cJSON *object_item = cJSON_CreateObject();
+    if (add_item_to_object(object, name, object_item, &global_hooks, false))
+    {
+        return object_item;
+    }
+
+    cJSON_Delete(object_item);
+    return NULL;
+}
+
+CJSON_PUBLIC(cJSON*) cJSON_AddArrayToObject(cJSON * const object, const char * const name)
+{
+    cJSON *array = cJSON_CreateArray();
+    if (add_item_to_object(object, name, array, &global_hooks, false))
+    {
+        return array;
+    }
+
+    cJSON_Delete(array);
+    return NULL;
 }
 
 CJSON_PUBLIC(cJSON *) cJSON_DetachItemViaPointer(cJSON *parent, cJSON * const item)
@@ -1856,7 +2197,7 @@ CJSON_PUBLIC(cJSON *) cJSON_DetachItemViaPointer(cJSON *parent, cJSON * const it
         return NULL;
     }
 
-    if (item->prev != NULL)
+    if (item != parent->child)
     {
         /* not the first element */
         item->prev->next = item->next;
@@ -1919,20 +2260,19 @@ CJSON_PUBLIC(void) cJSON_DeleteItemFromObjectCaseSensitive(cJSON *object, const
 }
 
 /* Replace array/object items with new ones. */
-CJSON_PUBLIC(void) cJSON_InsertItemInArray(cJSON *array, int which, cJSON *newitem)
+CJSON_PUBLIC(cJSON_bool) cJSON_InsertItemInArray(cJSON *array, int which, cJSON *newitem)
 {
     cJSON *after_inserted = NULL;
 
     if (which < 0)
     {
-        return;
+        return false;
     }
 
     after_inserted = get_array_item(array, (size_t)which);
     if (after_inserted == NULL)
     {
-        cJSON_AddItemToArray(array, newitem);
-        return;
+        return add_item_to_array(array, newitem);
     }
 
     newitem->next = after_inserted;
@@ -1946,11 +2286,12 @@ CJSON_PUBLIC(void) cJSON_InsertItemInArray(cJSON *array, int which, cJSON *newit
     {
         newitem->prev->next = newitem;
     }
+    return true;
 }
 
 CJSON_PUBLIC(cJSON_bool) cJSON_ReplaceItemViaPointer(cJSON * const parent, cJSON * const item, cJSON * replacement)
 {
-    if ((parent == NULL) || (replacement == NULL))
+    if ((parent == NULL) || (replacement == NULL) || (item == NULL))
     {
         return false;
     }
@@ -1967,14 +2308,20 @@ CJSON_PUBLIC(cJSON_bool) cJSON_ReplaceItemViaPointer(cJSON * const parent, cJSON
     {
         replacement->next->prev = replacement;
     }
-    if (replacement->prev != NULL)
-    {
-        replacement->prev->next = replacement;
-    }
     if (parent->child == item)
     {
         parent->child = replacement;
     }
+    else
+    {   /*
+         * To find the last item in array quickly, we use prev in array.
+         * We can't modify the last item's next pointer where this item was the parent's child
+         */
+        if (replacement->prev != NULL)
+        {
+            replacement->prev->next = replacement;
+        }
+    }
 
     item->next = NULL;
     item->prev = NULL;
@@ -1983,24 +2330,42 @@ CJSON_PUBLIC(cJSON_bool) cJSON_ReplaceItemViaPointer(cJSON * const parent, cJSON
     return true;
 }
 
-CJSON_PUBLIC(void) cJSON_ReplaceItemInArray(cJSON *array, int which, cJSON *newitem)
+CJSON_PUBLIC(cJSON_bool) cJSON_ReplaceItemInArray(cJSON *array, int which, cJSON *newitem)
 {
     if (which < 0)
     {
-        return;
+        return false;
     }
 
-    cJSON_ReplaceItemViaPointer(array, get_array_item(array, (size_t)which), newitem);
+    return cJSON_ReplaceItemViaPointer(array, get_array_item(array, (size_t)which), newitem);
 }
 
-CJSON_PUBLIC(void) cJSON_ReplaceItemInObject(cJSON *object, const char *string, cJSON *newitem)
+static cJSON_bool replace_item_in_object(cJSON *object, const char *string, cJSON *replacement, cJSON_bool case_sensitive)
 {
-    cJSON_ReplaceItemViaPointer(object, cJSON_GetObjectItem(object, string), newitem);
+    if ((replacement == NULL) || (string == NULL))
+    {
+        return false;
+    }
+
+    /* replace the name in the replacement */
+    if (!(replacement->type & cJSON_StringIsConst) && (replacement->string != NULL))
+    {
+        cJSON_free(replacement->string);
+    }
+    replacement->string = (char*)cJSON_strdup((const unsigned char*)string, &global_hooks);
+    replacement->type &= ~cJSON_StringIsConst;
+
+    return cJSON_ReplaceItemViaPointer(object, get_object_item(object, string, case_sensitive), replacement);
 }
 
-CJSON_PUBLIC(void) cJSON_ReplaceItemInObjectCaseSensitive(cJSON *object, const char *string, cJSON *newitem)
+CJSON_PUBLIC(cJSON_bool) cJSON_ReplaceItemInObject(cJSON *object, const char *string, cJSON *newitem)
 {
-    cJSON_ReplaceItemViaPointer(object, cJSON_GetObjectItemCaseSensitive(object, string), newitem);
+    return replace_item_in_object(object, string, newitem, false);
+}
+
+CJSON_PUBLIC(cJSON_bool) cJSON_ReplaceItemInObjectCaseSensitive(cJSON *object, const char *string, cJSON *newitem)
+{
+    return replace_item_in_object(object, string, newitem, true);
 }
 
 /* Create basic types: */
@@ -2037,12 +2402,12 @@ CJSON_PUBLIC(cJSON *) cJSON_CreateFalse(void)
     return item;
 }
 
-CJSON_PUBLIC(cJSON *) cJSON_CreateBool(cJSON_bool b)
+CJSON_PUBLIC(cJSON *) cJSON_CreateBool(cJSON_bool boolean)
 {
     cJSON *item = cJSON_New_Item(&global_hooks);
     if(item)
     {
-        item->type = b ? cJSON_True : cJSON_False;
+        item->type = boolean ? cJSON_True : cJSON_False;
     }
 
     return item;
@@ -2061,7 +2426,7 @@ CJSON_PUBLIC(cJSON *) cJSON_CreateNumber(double num)
         {
             item->valueint = LLONG_MAX;
         }
-        else if (num <= LLONG_MIN)
+        else if (num <= (double)LLONG_MIN)
         {
             item->valueint = LLONG_MIN;
         }
@@ -2091,6 +2456,39 @@ CJSON_PUBLIC(cJSON *) cJSON_CreateString(const char *string)
     return item;
 }
 
+CJSON_PUBLIC(cJSON *) cJSON_CreateStringReference(const char *string)
+{
+    cJSON *item = cJSON_New_Item(&global_hooks);
+    if (item != NULL)
+    {
+        item->type = cJSON_String | cJSON_IsReference;
+        item->valuestring = (char*)cast_away_const(string);
+    }
+
+    return item;
+}
+
+CJSON_PUBLIC(cJSON *) cJSON_CreateObjectReference(const cJSON *child)
+{
+    cJSON *item = cJSON_New_Item(&global_hooks);
+    if (item != NULL) {
+        item->type = cJSON_Object | cJSON_IsReference;
+        item->child = (cJSON*)cast_away_const(child);
+    }
+
+    return item;
+}
+
+CJSON_PUBLIC(cJSON *) cJSON_CreateArrayReference(const cJSON *child) {
+    cJSON *item = cJSON_New_Item(&global_hooks);
+    if (item != NULL) {
+        item->type = cJSON_Array | cJSON_IsReference;
+        item->child = (cJSON*)cast_away_const(child);
+    }
+
+    return item;
+}
+
 CJSON_PUBLIC(cJSON *) cJSON_CreateRaw(const char *raw)
 {
     cJSON *item = cJSON_New_Item(&global_hooks);
@@ -2138,7 +2536,7 @@ CJSON_PUBLIC(cJSON *) cJSON_CreateIntArray(const int *numbers, int count)
     cJSON *p = NULL;
     cJSON *a = NULL;
 
-    if (count < 0)
+    if ((count < 0) || (numbers == NULL))
     {
         return NULL;
     }
@@ -2173,7 +2571,7 @@ CJSON_PUBLIC(cJSON *) cJSON_CreateFloatArray(const float *numbers, int count)
     cJSON *p = NULL;
     cJSON *a = NULL;
 
-    if (count < 0)
+    if ((count < 0) || (numbers == NULL))
     {
         return NULL;
     }
@@ -2209,7 +2607,7 @@ CJSON_PUBLIC(cJSON *) cJSON_CreateDoubleArray(const double *numbers, int count)
     cJSON *p = NULL;
     cJSON *a = NULL;
 
-    if (count < 0)
+    if ((count < 0) || (numbers == NULL))
     {
         return NULL;
     }
@@ -2238,14 +2636,14 @@ CJSON_PUBLIC(cJSON *) cJSON_CreateDoubleArray(const double *numbers, int count)
     return a;
 }
 
-CJSON_PUBLIC(cJSON *) cJSON_CreateStringArray(const char **strings, int count)
+CJSON_PUBLIC(cJSON *) cJSON_CreateStringArray(const char *const *strings, int count)
 {
     size_t i = 0;
     cJSON *n = NULL;
     cJSON *p = NULL;
     cJSON *a = NULL;
 
-    if (count < 0)
+    if ((count < 0) || (strings == NULL))
     {
         return NULL;
     }
@@ -2354,63 +2752,96 @@ fail:
     return NULL;
 }
 
-CJSON_PUBLIC(void) cJSON_Minify(char *json)
+static void skip_oneline_comment(char **input)
 {
-    unsigned char *into = (unsigned char*)json;
-    while (*json)
+    *input += static_strlen("//");
+
+    for (; (*input)[0] != '\0'; ++(*input))
     {
-        if (*json == ' ')
-        {
-            json++;
+        if ((*input)[0] == '\n') {
+            *input += static_strlen("\n");
+            return;
         }
-        else if (*json == '\t')
-        {
-            /* Whitespace characters. */
-            json++;
-        }
-        else if (*json == '\r')
-        {
-            json++;
-        }
-        else if (*json=='\n')
+    }
+}
+
+static void skip_multiline_comment(char **input)
+{
+    *input += static_strlen("/*");
+
+    for (; (*input)[0] != '\0'; ++(*input))
+    {
+        if (((*input)[0] == '*') && ((*input)[1] == '/'))
         {
-            json++;
+            *input += static_strlen("*/");
+            return;
         }
-        else if ((*json == '/') && (json[1] == '/'))
-        {
-            /* double-slash comments, to end of line. */
-            while (*json && (*json != '\n'))
-            {
-                json++;
-            }
+    }
+}
+
+static void minify_string(char **input, char **output) {
+    (*output)[0] = (*input)[0];
+    *input += static_strlen("\"");
+    *output += static_strlen("\"");
+
+
+    for (; (*input)[0] != '\0'; (void)++(*input), ++(*output)) {
+        (*output)[0] = (*input)[0];
+
+        if ((*input)[0] == '\"') {
+            (*output)[0] = '\"';
+            *input += static_strlen("\"");
+            *output += static_strlen("\"");
+            return;
+        } else if (((*input)[0] == '\\') && ((*input)[1] == '\"')) {
+            (*output)[1] = (*input)[1];
+            *input += static_strlen("\"");
+            *output += static_strlen("\"");
         }
-        else if ((*json == '/') && (json[1] == '*'))
+    }
+}
+
+CJSON_PUBLIC(void) cJSON_Minify(char *json)
+{
+    char *into = json;
+
+    if (json == NULL)
+    {
+        return;
+    }
+
+    while (json[0] != '\0')
+    {
+        switch (json[0])
         {
-            /* multiline comments. */
-            while (*json && !((*json == '*') && (json[1] == '/')))
-            {
+            case ' ':
+            case '\t':
+            case '\r':
+            case '\n':
                 json++;
-            }
-            json += 2;
-        }
-        else if (*json == '\"')
-        {
-            /* string literals, which are \" sensitive. */
-            *into++ = (unsigned char)*json++;
-            while (*json && (*json != '\"'))
-            {
-                if (*json == '\\')
+                break;
+
+            case '/':
+                if (json[1] == '/')
                 {
-                    *into++ = (unsigned char)*json++;
+                    skip_oneline_comment(&json);
                 }
-                *into++ = (unsigned char)*json++;
-            }
-            *into++ = (unsigned char)*json++;
-        }
-        else
-        {
-            /* All other characters. */
-            *into++ = (unsigned char)*json++;
+                else if (json[1] == '*')
+                {
+                    skip_multiline_comment(&json);
+                } else {
+                    json++;
+                }
+                break;
+
+            case '\"':
+                minify_string(&json, (char**)&into);
+                break;
+
+            default:
+                into[0] = json[0];
+                json++;
+                into++;
         }
     }
 
@@ -2557,7 +2988,7 @@ CJSON_PUBLIC(cJSON_bool) cJSON_Compare(const cJSON * const a, const cJSON * cons
             return true;
 
         case cJSON_Number:
-            if (a->valuedouble == b->valuedouble)
+            if (compare_double(a->valuedouble, b->valuedouble))
             {
                 return true;
             }
@@ -2592,16 +3023,22 @@ CJSON_PUBLIC(cJSON_bool) cJSON_Compare(const cJSON * const a, const cJSON * cons
                 b_element = b_element->next;
             }
 
+            /* one of the arrays is longer than the other */
+            if (a_element != b_element) {
+                return false;
+            }
+
             return true;
         }
 
         case cJSON_Object:
         {
             cJSON *a_element = NULL;
+            cJSON *b_element = NULL;
             cJSON_ArrayForEach(a_element, a)
             {
                 /* TODO This has O(n^2) runtime, which is horrible! */
-                cJSON *b_element = get_object_item(b, a_element->string, case_sensitive);
+                b_element = get_object_item(b, a_element->string, case_sensitive);
                 if (b_element == NULL)
                 {
                     return false;
@@ -2613,6 +3050,22 @@ CJSON_PUBLIC(cJSON_bool) cJSON_Compare(const cJSON * const a, const cJSON * cons
                 }
             }
 
+            /* doing this twice, once on a and b to prevent true comparison if a subset of b
+             * TODO: Do this the proper way, this is just a fix for now */
+            cJSON_ArrayForEach(b_element, b)
+            {
+                a_element = get_object_item(a, b_element->string, case_sensitive);
+                if (a_element == NULL)
+                {
+                    return false;
+                }
+
+                if (!cJSON_Compare(b_element, a_element, case_sensitive))
+                {
+                    return false;
+                }
+            }
+
             return true;
         }
 
diff --git a/src/cjson.h b/src/cjson.h
index fa7cb73..03bc353 100644
--- a/src/cjson.h
+++ b/src/cjson.h
@@ -33,10 +33,60 @@ extern "C"
 {
 #endif
 
+#if !defined(__WINDOWS__) && (defined(WIN32) || defined(WIN64) || defined(_MSC_VER) || defined(_WIN32))
+#define __WINDOWS__
+#endif
+
+#ifdef __WINDOWS__
+
+/* When compiling for windows, we specify a specific calling convention to avoid issues where we are being called from a project with a different default calling convention.  For windows you have 3 define options:
+
+CJSON_HIDE_SYMBOLS - Define this in the case where you don't want to ever dllexport symbols
+CJSON_EXPORT_SYMBOLS - Define this on library build when you want to dllexport symbols (default)
+CJSON_IMPORT_SYMBOLS - Define this if you want to dllimport symbol
+
+For *nix builds that support visibility attribute, you can define similar behavior by
+
+setting default visibility to hidden by adding
+-fvisibility=hidden (for gcc)
+or
+-xldscope=hidden (for sun cc)
+to CFLAGS
+
+then using the CJSON_API_VISIBILITY flag to "export" the same symbols the way CJSON_EXPORT_SYMBOLS does
+
+*/
+
+#define CJSON_CDECL __cdecl
+#define CJSON_STDCALL __stdcall
+
+/* export symbols by default, this is necessary for copy pasting the C and header file */
+#if !defined(CJSON_HIDE_SYMBOLS) && !defined(CJSON_IMPORT_SYMBOLS) && !defined(CJSON_EXPORT_SYMBOLS)
+#define CJSON_EXPORT_SYMBOLS
+#endif
+
+#if defined(CJSON_HIDE_SYMBOLS)
+#define CJSON_PUBLIC(type)   type CJSON_STDCALL
+#elif defined(CJSON_EXPORT_SYMBOLS)
+#define CJSON_PUBLIC(type)   __declspec(dllexport) type CJSON_STDCALL
+#elif defined(CJSON_IMPORT_SYMBOLS)
+#define CJSON_PUBLIC(type)   __declspec(dllimport) type CJSON_STDCALL
+#endif
+#else /* !__WINDOWS__ */
+#define CJSON_CDECL
+#define CJSON_STDCALL
+
+#if (defined(__GNUC__) || defined(__SUNPRO_CC) || defined (__SUNPRO_C)) && defined(CJSON_API_VISIBILITY)
+#define CJSON_PUBLIC(type)   __attribute__((visibility("default"))) type
+#else
+#define CJSON_PUBLIC(type) type
+#endif
+#endif
+
 /* project version */
 #define CJSON_VERSION_MAJOR 1
-#define CJSON_VERSION_MINOR 5
-#define CJSON_VERSION_PATCH 2
+#define CJSON_VERSION_MINOR 7
+#define CJSON_VERSION_PATCH 13
 
 #include <stddef.h>
 
@@ -79,55 +129,13 @@ typedef struct cJSON
 
 typedef struct cJSON_Hooks
 {
-      void *(*malloc_fn)(size_t sz);
-      void (*free_fn)(void *ptr);
+      /* malloc/free are CDECL on Windows regardless of the default calling convention of the compiler, so ensure the hooks allow passing those functions directly. */
+      void *(CJSON_CDECL *malloc_fn)(size_t sz);
+      void (CJSON_CDECL *free_fn)(void *ptr);
 } cJSON_Hooks;
 
 typedef int cJSON_bool;
 
-#if !defined(__WINDOWS__) && (defined(WIN32) || defined(WIN64) || defined(_MSC_VER) || defined(_WIN32))
-#define __WINDOWS__
-#endif
-#ifdef __WINDOWS__
-
-/* When compiling for windows, we specify a specific calling convention to avoid issues where we are being called from a project with a different default calling convention.  For windows you have 2 define options:
-
-CJSON_HIDE_SYMBOLS - Define this in the case where you don't want to ever dllexport symbols
-CJSON_EXPORT_SYMBOLS - Define this on library build when you want to dllexport symbols (default)
-CJSON_IMPORT_SYMBOLS - Define this if you want to dllimport symbol
-
-For *nix builds that support visibility attribute, you can define similar behavior by
-
-setting default visibility to hidden by adding
--fvisibility=hidden (for gcc)
-or
--xldscope=hidden (for sun cc)
-to CFLAGS
-
-then using the CJSON_API_VISIBILITY flag to "export" the same symbols the way CJSON_EXPORT_SYMBOLS does
-
-*/
-
-/* export symbols by default, this is necessary for copy pasting the C and header file */
-#if !defined(CJSON_HIDE_SYMBOLS) && !defined(CJSON_IMPORT_SYMBOLS) && !defined(CJSON_EXPORT_SYMBOLS)
-#define CJSON_EXPORT_SYMBOLS
-#endif
-
-#if defined(CJSON_HIDE_SYMBOLS)
-#define CJSON_PUBLIC(type)   type __stdcall
-#elif defined(CJSON_EXPORT_SYMBOLS)
-#define CJSON_PUBLIC(type)   __declspec(dllexport) type __stdcall
-#elif defined(CJSON_IMPORT_SYMBOLS)
-#define CJSON_PUBLIC(type)   __declspec(dllimport) type __stdcall
-#endif
-#else /* !WIN32 */
-#if (defined(__GNUC__) || defined(__SUNPRO_CC) || defined (__SUNPRO_C)) && defined(CJSON_API_VISIBILITY)
-#define CJSON_PUBLIC(type)   __attribute__((visibility("default"))) type
-#else
-#define CJSON_PUBLIC(type) type
-#endif
-#endif
-
 /* Limits how deeply nested arrays/objects can be before cJSON rejects to parse them.
  * This is to prevent stack overflows. */
 #ifndef CJSON_NESTING_LIMIT
@@ -143,6 +151,12 @@ CJSON_PUBLIC(void) cJSON_InitHooks(cJSON_Hooks* hooks);
 /* Memory Management: the caller is always responsible to free the results from all variants of cJSON_Parse (with cJSON_Delete) and cJSON_Print (with stdlib free, cJSON_Hooks.free_fn, or cJSON_free as appropriate). The exception is cJSON_PrintPreallocated, where the caller has full responsibility of the buffer. */
 /* Supply a block of JSON, and this returns a cJSON object you can interrogate. */
 CJSON_PUBLIC(cJSON *) cJSON_Parse(const char *value);
+CJSON_PUBLIC(cJSON *) cJSON_ParseWithLength(const char *value, size_t buffer_length);
+/* ParseWithOpts allows you to require (and check) that the JSON is null terminated, and to retrieve the pointer to the final byte parsed. */
+/* If you supply a ptr in return_parse_end and parsing fails, then return_parse_end will contain a pointer to the error so will match cJSON_GetErrorPtr(). */
+CJSON_PUBLIC(cJSON *) cJSON_ParseWithOpts(const char *value, const char **return_parse_end, cJSON_bool require_null_terminated);
+CJSON_PUBLIC(cJSON *) cJSON_ParseWithLengthOpts(const char *value, size_t buffer_length, const char **return_parse_end, cJSON_bool require_null_terminated);
+
 /* Render a cJSON entity to text for transfer/storage. */
 CJSON_PUBLIC(char *) cJSON_Print(const cJSON *item);
 /* Render a cJSON entity to text for transfer/storage without any formatting. */
@@ -153,11 +167,11 @@ CJSON_PUBLIC(char *) cJSON_PrintBuffered(const cJSON *item, int prebuffer, cJSON
 /* NOTE: cJSON is not always 100% accurate in estimating how much memory it will use, so to be safe allocate 5 bytes more than you actually need */
 CJSON_PUBLIC(cJSON_bool) cJSON_PrintPreallocated(cJSON *item, char *buffer, const int length, const cJSON_bool format);
 /* Delete a cJSON entity and all subentities. */
-CJSON_PUBLIC(void) cJSON_Delete(cJSON *c);
+CJSON_PUBLIC(void) cJSON_Delete(cJSON *item);
 
 /* Returns the number of items in an array (or object). */
 CJSON_PUBLIC(int) cJSON_GetArraySize(const cJSON *array);
-/* Retrieve item number "item" from array "array". Returns NULL if unsuccessful. */
+/* Retrieve item number "index" from array "array". Returns NULL if unsuccessful. */
 CJSON_PUBLIC(cJSON *) cJSON_GetArrayItem(const cJSON *array, int index);
 /* Get item "string" from object. Case insensitive. */
 CJSON_PUBLIC(cJSON *) cJSON_GetObjectItem(const cJSON * const object, const char * const string);
@@ -166,6 +180,10 @@ CJSON_PUBLIC(cJSON_bool) cJSON_HasObjectItem(const cJSON *object, const char *st
 /* For analysing failed parses. This returns a pointer to the parse error. You'll probably need to look a few chars back to make sense of it. Defined when cJSON_Parse() returns 0. 0 when cJSON_Parse() succeeds. */
 CJSON_PUBLIC(const char *) cJSON_GetErrorPtr(void);
 
+/* Check item type and return its value */
+CJSON_PUBLIC(char *) cJSON_GetStringValue(cJSON *item);
+CJSON_PUBLIC(double) cJSON_GetNumberValue(cJSON *item);
+
 /* These functions check the type of an item */
 CJSON_PUBLIC(cJSON_bool) cJSON_IsInvalid(const cJSON * const item);
 CJSON_PUBLIC(cJSON_bool) cJSON_IsFalse(const cJSON * const item);
@@ -190,24 +208,33 @@ CJSON_PUBLIC(cJSON *) cJSON_CreateRaw(const char *raw);
 CJSON_PUBLIC(cJSON *) cJSON_CreateArray(void);
 CJSON_PUBLIC(cJSON *) cJSON_CreateObject(void);
 
-/* These utilities create an Array of count items. */
+/* Create a string where valuestring references a string so
+ * it will not be freed by cJSON_Delete */
+CJSON_PUBLIC(cJSON *) cJSON_CreateStringReference(const char *string);
+/* Create an object/array that only references it's elements so
+ * they will not be freed by cJSON_Delete */
+CJSON_PUBLIC(cJSON *) cJSON_CreateObjectReference(const cJSON *child);
+CJSON_PUBLIC(cJSON *) cJSON_CreateArrayReference(const cJSON *child);
+
+/* These utilities create an Array of count items.
+ * The parameter count cannot be greater than the number of elements in the number array, otherwise array access will be out of bounds.*/
 CJSON_PUBLIC(cJSON *) cJSON_CreateIntArray(const int *numbers, int count);
 CJSON_PUBLIC(cJSON *) cJSON_CreateFloatArray(const float *numbers, int count);
 CJSON_PUBLIC(cJSON *) cJSON_CreateDoubleArray(const double *numbers, int count);
-CJSON_PUBLIC(cJSON *) cJSON_CreateStringArray(const char **strings, int count);
+CJSON_PUBLIC(cJSON *) cJSON_CreateStringArray(const char *const *strings, int count);
 
 /* Append item to the specified array/object. */
-CJSON_PUBLIC(void) cJSON_AddItemToArray(cJSON *array, cJSON *item);
-CJSON_PUBLIC(void) cJSON_AddItemToObject(cJSON *object, const char *string, cJSON *item);
+CJSON_PUBLIC(cJSON_bool) cJSON_AddItemToArray(cJSON *array, cJSON *item);
+CJSON_PUBLIC(cJSON_bool) cJSON_AddItemToObject(cJSON *object, const char *string, cJSON *item);
 /* Use this when string is definitely const (i.e. a literal, or as good as), and will definitely survive the cJSON object.
  * WARNING: When this function was used, make sure to always check that (item->type & cJSON_StringIsConst) is zero before
  * writing to `item->string` */
-CJSON_PUBLIC(void) cJSON_AddItemToObjectCS(cJSON *object, const char *string, cJSON *item);
+CJSON_PUBLIC(cJSON_bool) cJSON_AddItemToObjectCS(cJSON *object, const char *string, cJSON *item);
 /* Append reference to item to the specified array/object. Use this when you want to add an existing cJSON to a new cJSON, but don't want to corrupt your existing cJSON. */
-CJSON_PUBLIC(void) cJSON_AddItemReferenceToArray(cJSON *array, cJSON *item);
-CJSON_PUBLIC(void) cJSON_AddItemReferenceToObject(cJSON *object, const char *string, cJSON *item);
+CJSON_PUBLIC(cJSON_bool) cJSON_AddItemReferenceToArray(cJSON *array, cJSON *item);
+CJSON_PUBLIC(cJSON_bool) cJSON_AddItemReferenceToObject(cJSON *object, const char *string, cJSON *item);
 
-/* Remove/Detatch items from Arrays/Objects. */
+/* Remove/Detach items from Arrays/Objects. */
 CJSON_PUBLIC(cJSON *) cJSON_DetachItemViaPointer(cJSON *parent, cJSON * const item);
 CJSON_PUBLIC(cJSON *) cJSON_DetachItemFromArray(cJSON *array, int which);
 CJSON_PUBLIC(void) cJSON_DeleteItemFromArray(cJSON *array, int which);
@@ -217,44 +244,47 @@ CJSON_PUBLIC(void) cJSON_DeleteItemFromObject(cJSON *object, const char *string)
 CJSON_PUBLIC(void) cJSON_DeleteItemFromObjectCaseSensitive(cJSON *object, const char *string);
 
 /* Update array items. */
-CJSON_PUBLIC(void) cJSON_InsertItemInArray(cJSON *array, int which, cJSON *newitem); /* Shifts pre-existing items to the right. */
+CJSON_PUBLIC(cJSON_bool) cJSON_InsertItemInArray(cJSON *array, int which, cJSON *newitem); /* Shifts pre-existing items to the right. */
 CJSON_PUBLIC(cJSON_bool) cJSON_ReplaceItemViaPointer(cJSON * const parent, cJSON * const item, cJSON * replacement);
-CJSON_PUBLIC(void) cJSON_ReplaceItemInArray(cJSON *array, int which, cJSON *newitem);
-CJSON_PUBLIC(void) cJSON_ReplaceItemInObject(cJSON *object,const char *string,cJSON *newitem);
-CJSON_PUBLIC(void) cJSON_ReplaceItemInObjectCaseSensitive(cJSON *object,const char *string,cJSON *newitem);
+CJSON_PUBLIC(cJSON_bool) cJSON_ReplaceItemInArray(cJSON *array, int which, cJSON *newitem);
+CJSON_PUBLIC(cJSON_bool) cJSON_ReplaceItemInObject(cJSON *object,const char *string,cJSON *newitem);
+CJSON_PUBLIC(cJSON_bool) cJSON_ReplaceItemInObjectCaseSensitive(cJSON *object,const char *string,cJSON *newitem);
 
 /* Duplicate a cJSON item */
 CJSON_PUBLIC(cJSON *) cJSON_Duplicate(const cJSON *item, cJSON_bool recurse);
 /* Duplicate will create a new, identical cJSON item to the one you pass, in new memory that will
-need to be released. With recurse!=0, it will duplicate any children connected to the item.
-The item->next and ->prev pointers are always zero on return from Duplicate. */
+ * need to be released. With recurse!=0, it will duplicate any children connected to the item.
+ * The item->next and ->prev pointers are always zero on return from Duplicate. */
 /* Recursively compare two cJSON items for equality. If either a or b is NULL or invalid, they will be considered unequal.
  * case_sensitive determines if object keys are treated case sensitive (1) or case insensitive (0) */
 CJSON_PUBLIC(cJSON_bool) cJSON_Compare(const cJSON * const a, const cJSON * const b, const cJSON_bool case_sensitive);
 
-
-/* ParseWithOpts allows you to require (and check) that the JSON is null terminated, and to retrieve the pointer to the final byte parsed. */
-/* If you supply a ptr in return_parse_end and parsing fails, then return_parse_end will contain a pointer to the error. If not, then cJSON_GetErrorPtr() does the job. */
-CJSON_PUBLIC(cJSON *) cJSON_ParseWithOpts(const char *value, const char **return_parse_end, cJSON_bool require_null_terminated);
-
+/* Minify a strings, remove blank characters(such as ' ', '\t', '\r', '\n') from strings.
+ * The input pointer json cannot point to a read-only address area, such as a string constant, 
+ * but should point to a readable and writable adress area. */
 CJSON_PUBLIC(void) cJSON_Minify(char *json);
 
-/* Macros for creating things quickly. */
-#define cJSON_AddNullToObject(object,name) cJSON_AddItemToObject(object, name, cJSON_CreateNull())
-#define cJSON_AddTrueToObject(object,name) cJSON_AddItemToObject(object, name, cJSON_CreateTrue())
-#define cJSON_AddFalseToObject(object,name) cJSON_AddItemToObject(object, name, cJSON_CreateFalse())
-#define cJSON_AddBoolToObject(object,name,b) cJSON_AddItemToObject(object, name, cJSON_CreateBool(b))
-#define cJSON_AddNumberToObject(object,name,n) cJSON_AddItemToObject(object, name, cJSON_CreateNumber(n))
-#define cJSON_AddStringToObject(object,name,s) cJSON_AddItemToObject(object, name, cJSON_CreateString(s))
-#define cJSON_AddRawToObject(object,name,s) cJSON_AddItemToObject(object, name, cJSON_CreateRaw(s))
+/* Helper functions for creating and adding items to an object at the same time.
+ * They return the added item or NULL on failure. */
+CJSON_PUBLIC(cJSON*) cJSON_AddNullToObject(cJSON * const object, const char * const name);
+CJSON_PUBLIC(cJSON*) cJSON_AddTrueToObject(cJSON * const object, const char * const name);
+CJSON_PUBLIC(cJSON*) cJSON_AddFalseToObject(cJSON * const object, const char * const name);
+CJSON_PUBLIC(cJSON*) cJSON_AddBoolToObject(cJSON * const object, const char * const name, const cJSON_bool boolean);
+CJSON_PUBLIC(cJSON*) cJSON_AddNumberToObject(cJSON * const object, const char * const name, const double number);
+CJSON_PUBLIC(cJSON*) cJSON_AddStringToObject(cJSON * const object, const char * const name, const char * const string);
+CJSON_PUBLIC(cJSON*) cJSON_AddRawToObject(cJSON * const object, const char * const name, const char * const raw);
+CJSON_PUBLIC(cJSON*) cJSON_AddObjectToObject(cJSON * const object, const char * const name);
+CJSON_PUBLIC(cJSON*) cJSON_AddArrayToObject(cJSON * const object, const char * const name);
 
 /* When assigning an integer value, it needs to be propagated to valuedouble too. */
 #define cJSON_SetIntValue(object, number) ((object) ? (object)->valueint = (object)->valuedouble = (number) : (number))
 /* helper for the cJSON_SetNumberValue macro */
 CJSON_PUBLIC(double) cJSON_SetNumberHelper(cJSON *object, double number);
 #define cJSON_SetNumberValue(object, number) ((object != NULL) ? cJSON_SetNumberHelper(object, (double)number) : (number))
+/* Change the valuestring of a cJSON_String object, only takes effect when type of object is cJSON_String */
+CJSON_PUBLIC(char*) cJSON_SetValuestring(cJSON *object, const char *valuestring);
 
-/* Macro for iterating over an array */
+/* Macro for iterating over an array or object */
 #define cJSON_ArrayForEach(element, array) for(element = (array != NULL) ? (array)->child : NULL; element != NULL; element = element->next)
 
 /* malloc/free objects using the malloc/free functions that have been set with cJSON_InitHooks */