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- #include <string.h>
- #include <jansson.h>
- #include "util.h"
- static int malloc_called = 0;
- static int free_called = 0;
- static size_t malloc_used = 0;
- /* helpers */
- static void create_and_free_complex_object()
- {
- json_t *obj;
- obj = json_pack("{s:i,s:n,s:b,s:b,s:{s:s},s:[i,i,i]}",
- "foo", 42,
- "bar",
- "baz", 1,
- "qux", 0,
- "alice", "bar", "baz",
- "bob", 9, 8, 7);
- json_decref(obj);
- }
- static void create_and_free_object_with_oom()
- {
- int i;
- char key[4];
- json_t *obj = json_object();
- for (i = 0; i < 10; i++)
- {
- snprintf(key, sizeof key, "%d", i);
- json_object_set_new(obj, key, json_integer(i));
- }
- json_decref(obj);
- }
- static void *my_malloc(size_t size)
- {
- malloc_called = 1;
- return malloc(size);
- }
- static void my_free(void *ptr)
- {
- free_called = 1;
- free(ptr);
- }
- static void test_simple()
- {
- json_malloc_t mfunc = NULL;
- json_free_t ffunc = NULL;
- json_set_alloc_funcs(my_malloc, my_free);
- json_get_alloc_funcs(&mfunc, &ffunc);
- create_and_free_complex_object();
- if (malloc_called != 1 || free_called != 1
- || mfunc != my_malloc || ffunc != my_free)
- fail("Custom allocation failed");
- }
- static void *oom_malloc(size_t size)
- {
- if (malloc_used + size > 800)
- return NULL;
- malloc_used += size;
- return malloc(size);
- }
- static void oom_free(void *ptr)
- {
- free_called++;
- free(ptr);
- }
- static void test_oom()
- {
- free_called = 0;
- json_set_alloc_funcs(oom_malloc, oom_free);
- create_and_free_object_with_oom();
- if (free_called == 0)
- fail("Allocation with OOM failed");
- }
- /*
- Test the secure memory functions code given in the API reference
- documentation, but by using plain memset instead of
- guaranteed_memset().
- */
- static void *secure_malloc(size_t size)
- {
- /* Store the memory area size in the beginning of the block */
- void *ptr = malloc(size + 8);
- *((size_t *)ptr) = size;
- return (char *)ptr + 8;
- }
- static void secure_free(void *ptr)
- {
- size_t size;
- ptr = (char *)ptr - 8;
- size = *((size_t *)ptr);
- /*guaranteed_*/memset(ptr, 0, size + 8);
- free(ptr);
- }
- static void test_secure_funcs(void)
- {
- json_set_alloc_funcs(secure_malloc, secure_free);
- create_and_free_complex_object();
- }
- static void run_tests()
- {
- test_simple();
- test_secure_funcs();
- test_oom();
- }
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