chore: update version and changelog (#610)

There is a small typo in tests/readme_examples.c.

Should read `transferring` rather than `transfering`.

.gitattributes

@@ -6,3 +6,6 @@
 .github                 export-ignore
 .editorconfig           export-ignore
 .travis.yml             export-ignore
+
+# Linguist incorrectly identified the headers as C++, manually override this.
+*.h linguist-language=C

CHANGELOG.md

@@ -1,3 +1,13 @@
+1.7.15 (Aug 25, 2021)
+======
+Fixes:
+------
+* Fix potential core dumped for strrchr, see [#546](https://github.com/DaveGamble/cJSON/pull/546)
+* Fix null pointer crash in cJSON_CreateXxArray, see [#538](https://github.com/DaveGamble/cJSON/pull/538)
+* Fix several null pointer problems on allocation failure, see [#526](https://github.com/DaveGamble/cJSON/pull/526)
+* Fix a possible dereference of null pointer, see [#519](https://github.com/DaveGamble/cJSON/pull/519)
+* Fix windows build failure about defining nan, see [#518](https://github.com/DaveGamble/cJSON/pull/518)
+
 1.7.14 (Sep 3, 2020)
 ======
 Fixes:

CMakeLists.txt

@@ -7,7 +7,7 @@ include(GNUInstallDirs)
 
 set(PROJECT_VERSION_MAJOR 1)
 set(PROJECT_VERSION_MINOR 7)
-set(PROJECT_VERSION_PATCH 14)
+set(PROJECT_VERSION_PATCH 15)
 set(CJSON_VERSION_SO 1)
 set(CJSON_UTILS_VERSION_SO 1)
 set(PROJECT_VERSION "${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}.${PROJECT_VERSION_PATCH}")

Makefile

@@ -8,7 +8,7 @@ CJSON_TEST_SRC = cJSON.c test.c
 
 LDLIBS = -lm
 
-LIBVERSION = 1.7.14
+LIBVERSION = 1.7.15
 CJSON_SOVERSION = 1
 UTILS_SOVERSION = 1
 

cJSON.c

@@ -78,8 +78,12 @@
 #endif
 
 #ifndef NAN
+#ifdef _WIN32
+#define NAN sqrt(-1.0)
+#else
 #define NAN 0.0/0.0
 #endif
+#endif
 
 typedef struct {
     const unsigned char *json;
@@ -113,7 +117,7 @@ CJSON_PUBLIC(double) cJSON_GetNumberValue(const cJSON * const item)
 }
 
 /* This is a safeguard to prevent copy-pasters from using incompatible C and header files */
-#if (CJSON_VERSION_MAJOR != 1) || (CJSON_VERSION_MINOR != 7) || (CJSON_VERSION_PATCH != 14)
+#if (CJSON_VERSION_MAJOR != 1) || (CJSON_VERSION_MINOR != 7) || (CJSON_VERSION_PATCH != 15)
     #error cJSON.h and cJSON.c have different versions. Make sure that both have the same.
 #endif
 
@@ -507,10 +511,8 @@ static unsigned char* ensure(printbuffer * const p, size_t needed)
 
             return NULL;
         }
-        if (newbuffer)
-        {
-            memcpy(newbuffer, p->buffer, p->offset + 1);
-        }
+        
+        memcpy(newbuffer, p->buffer, p->offset + 1);
         p->hooks.deallocate(p->buffer);
     }
     p->length = newsize;
@@ -2544,6 +2546,7 @@ CJSON_PUBLIC(cJSON *) cJSON_CreateIntArray(const int *numbers, int count)
     }
 
     a = cJSON_CreateArray();
+
     for(i = 0; a && (i < (size_t)count); i++)
     {
         n = cJSON_CreateNumber(numbers[i]);
@@ -2562,7 +2565,10 @@ CJSON_PUBLIC(cJSON *) cJSON_CreateIntArray(const int *numbers, int count)
         }
         p = n;
     }
-    a->child->prev = n;
+
+    if (a && a->child) {
+        a->child->prev = n;
+    }
 
     return a;
 }
@@ -2599,7 +2605,10 @@ CJSON_PUBLIC(cJSON *) cJSON_CreateFloatArray(const float *numbers, int count)
         }
         p = n;
     }
-    a->child->prev = n;
+
+    if (a && a->child) {
+        a->child->prev = n;
+    }
 
     return a;
 }
@@ -2618,7 +2627,7 @@ CJSON_PUBLIC(cJSON *) cJSON_CreateDoubleArray(const double *numbers, int count)
 
     a = cJSON_CreateArray();
 
-    for(i = 0;a && (i < (size_t)count); i++)
+    for(i = 0; a && (i < (size_t)count); i++)
     {
         n = cJSON_CreateNumber(numbers[i]);
         if(!n)
@@ -2636,7 +2645,10 @@ CJSON_PUBLIC(cJSON *) cJSON_CreateDoubleArray(const double *numbers, int count)
         }
         p = n;
     }
-    a->child->prev = n;
+
+    if (a && a->child) {
+        a->child->prev = n;
+    }
 
     return a;
 }
@@ -2673,8 +2685,11 @@ CJSON_PUBLIC(cJSON *) cJSON_CreateStringArray(const char *const *strings, int co
         }
         p = n;
     }
-    a->child->prev = n;
 
+    if (a && a->child) {
+        a->child->prev = n;
+    }
+    
     return a;
 }
 
@@ -2961,7 +2976,7 @@ CJSON_PUBLIC(cJSON_bool) cJSON_IsRaw(const cJSON * const item)
 
 CJSON_PUBLIC(cJSON_bool) cJSON_Compare(const cJSON * const a, const cJSON * const b, const cJSON_bool case_sensitive)
 {
-    if ((a == NULL) || (b == NULL) || ((a->type & 0xFF) != (b->type & 0xFF)) || cJSON_IsInvalid(a))
+    if ((a == NULL) || (b == NULL) || ((a->type & 0xFF) != (b->type & 0xFF)))
     {
         return false;
     }

cJSON.h

@@ -81,7 +81,7 @@ then using the CJSON_API_VISIBILITY flag to "export" the same symbols the way CJ
 /* project version */
 #define CJSON_VERSION_MAJOR 1
 #define CJSON_VERSION_MINOR 7
-#define CJSON_VERSION_PATCH 14
+#define CJSON_VERSION_PATCH 15
 
 #include <stddef.h>
 
@@ -256,7 +256,7 @@ CJSON_PUBLIC(cJSON_bool) cJSON_Compare(const cJSON * const a, const cJSON * cons
 
 /* 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. */
+ * but should point to a readable and writable address area. */
 CJSON_PUBLIC(void) cJSON_Minify(char *json);
 
 /* Helper functions for creating and adding items to an object at the same time.

cJSON_Utils.c

@@ -960,7 +960,9 @@ static int apply_patch(cJSON *object, const cJSON *patch, const cJSON_bool case_
 
     /* split pointer in parent and child */
     parent_pointer = cJSONUtils_strdup((unsigned char*)path->valuestring);
-    child_pointer = (unsigned char*)strrchr((char*)parent_pointer, '/');
+    if (parent_pointer) {
+        child_pointer = (unsigned char*)strrchr((char*)parent_pointer, '/');
+    }
     if (child_pointer != NULL)
     {
         child_pointer[0] = '\0';
@@ -1406,6 +1408,10 @@ static cJSON *generate_merge_patch(cJSON * const from, cJSON * const to, const c
     from_child = from->child;
     to_child = to->child;
     patch = cJSON_CreateObject();
+    if (patch == NULL)
+    {
+        return NULL;
+    }
     while (from_child || to_child)
     {
         int diff;

tests/cjson_add.c

@@ -117,6 +117,50 @@ static void cjson_add_true_should_fail_on_allocation_failure(void)
     cJSON_Delete(root);
 }
 
+static void cjson_create_int_array_should_fail_on_allocation_failure(void)
+{
+    int numbers[] = {1, 2, 3};
+
+    cJSON_InitHooks(&failing_hooks);
+
+    TEST_ASSERT_NULL(cJSON_CreateIntArray(numbers, 3));
+
+    cJSON_InitHooks(NULL);
+}
+
+static void cjson_create_float_array_should_fail_on_allocation_failure(void)
+{
+    float numbers[] = {1.0f, 2.0f, 3.0f};
+
+    cJSON_InitHooks(&failing_hooks);
+
+    TEST_ASSERT_NULL(cJSON_CreateFloatArray(numbers, 3));
+
+    cJSON_InitHooks(NULL);
+}
+
+static void cjson_create_double_array_should_fail_on_allocation_failure(void)
+{
+    double numbers[] = {1.0, 2.0, 3.0};
+
+    cJSON_InitHooks(&failing_hooks);
+
+    TEST_ASSERT_NULL(cJSON_CreateDoubleArray(numbers, 3));
+
+    cJSON_InitHooks(NULL);
+}
+
+static void cjson_create_string_array_should_fail_on_allocation_failure(void)
+{
+    const char* strings[] = {"1", "2", "3"};
+
+    cJSON_InitHooks(&failing_hooks);
+
+    TEST_ASSERT_NULL(cJSON_CreateStringArray(strings, 3));
+
+    cJSON_InitHooks(NULL);
+}
+
 static void cjson_add_false_should_add_false(void)
 {
     cJSON *root = cJSON_CreateObject();
@@ -390,6 +434,11 @@ int CJSON_CDECL main(void)
     RUN_TEST(cjson_add_true_should_fail_with_null_pointers);
     RUN_TEST(cjson_add_true_should_fail_on_allocation_failure);
 
+    RUN_TEST(cjson_create_int_array_should_fail_on_allocation_failure);
+    RUN_TEST(cjson_create_float_array_should_fail_on_allocation_failure);
+    RUN_TEST(cjson_create_double_array_should_fail_on_allocation_failure);
+    RUN_TEST(cjson_create_string_array_should_fail_on_allocation_failure);
+
     RUN_TEST(cjson_add_false_should_add_false);
     RUN_TEST(cjson_add_false_should_fail_with_null_pointers);
     RUN_TEST(cjson_add_false_should_fail_on_allocation_failure);

tests/json_patch_tests.c

@@ -66,7 +66,7 @@ static cJSON_bool test_apply_patch(const cJSON * const test)
     }
     else
     {
-        printf("Testing unkown\n");
+        printf("Testing unknown\n");
     }
 
     disabled = cJSON_GetObjectItemCaseSensitive(test, "disabled");

tests/readme_examples.c

@@ -69,7 +69,7 @@ static char* create_monitor(void)
         goto end;
     }
     /* after creation was successful, immediately add it to the monitor,
-     * thereby transfering ownership of the pointer to it */
+     * thereby transferring ownership of the pointer to it */
     cJSON_AddItemToObject(monitor, "name", name);
 
     resolutions = cJSON_CreateArray();