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author | allen <leloucharcher@163.com> | 2019-10-12 15:36:05 +0800 |
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committer | allen <leloucharcher@163.com> | 2019-10-12 15:36:05 +0800 |
commit | 00d2d274bc4260d9197d5003cfb4531f7eca494b (patch) | |
tree | da59c8ff9048da225330ba5a316af619d89a00fe | |
parent | cb4727c4a931a471f7d2f1594b162a71349b4dfe (diff) | |
download | jansson-00d2d274bc4260d9197d5003cfb4531f7eca494b.zip jansson-00d2d274bc4260d9197d5003cfb4531f7eca494b.tar.gz jansson-00d2d274bc4260d9197d5003cfb4531f7eca494b.tar.bz2 |
add loop check for json_object_update_recursive function
-rw-r--r-- | src/value.c | 50 | ||||
-rw-r--r-- | test/suites/api/test_object.c | 33 |
2 files changed, 75 insertions, 8 deletions
diff --git a/src/value.c b/src/value.c index 1996232..e09a485 100644 --- a/src/value.c +++ b/src/value.c @@ -37,7 +37,7 @@ static JSON_INLINE int isnan(double x) { return x != x; } static JSON_INLINE int isinf(double x) { return !isnan(x) && isnan(x - x); } #endif -json_t *do_deep_copy(const json_t *, hashtable_t *); +json_t *do_deep_copy(const json_t *json, hashtable_t *parents); static JSON_INLINE void json_init(json_t *json, json_type type) { @@ -214,24 +214,56 @@ int json_object_update_missing(json_t *object, json_t *other) return 0; } -int json_object_update_recursive(json_t *object, json_t *other) +int do_object_update_recursive(json_t *object, json_t *other, hashtable_t *parents) { const char *key; json_t *value; + char loop_key[LOOP_KEY_LEN]; + int res = 0; if(!json_is_object(object) || !json_is_object(other)) return -1; + if(jsonp_loop_check(parents, other, loop_key, sizeof(loop_key))) + return -1; + json_object_foreach(other, key, value) { json_t *v = json_object_get(object, key); if(json_is_object(v) && json_is_object(value)) - json_object_update_recursive(v, value); + { + if(do_object_update_recursive(v, value, parents)) + { + res = -1; + break; + } + } else - json_object_set_nocheck(object, key, value); + { + if(json_object_set_nocheck(object, key, value)) + { + res = -1; + break; + } + } } - return 0; + hashtable_del(parents, loop_key); + + return res; +} + +int json_object_update_recursive(json_t *object, json_t *other) +{ + int res; + hashtable_t parents_set; + + if (hashtable_init(&parents_set)) + return -1; + res = do_object_update_recursive(object, other, &parents_set); + hashtable_close(&parents_set); + + return res; } void *json_object_iter(json_t *json) @@ -349,7 +381,7 @@ static json_t *json_object_deep_copy(const json_t *object, hashtable_t *parents) result = json_object(); if(!result) - return NULL; + goto out; /* Cannot use json_object_foreach because object has to be cast non-const */ @@ -368,6 +400,8 @@ static json_t *json_object_deep_copy(const json_t *object, hashtable_t *parents) } iter = json_object_iter_next((json_t *)object, iter); } + +out: hashtable_del(parents, loop_key); return result; @@ -668,7 +702,7 @@ static json_t *json_array_deep_copy(const json_t *array, hashtable_t *parents) result = json_array(); if(!result) - return NULL; + goto out; for(i = 0; i < json_array_size(array); i++) { @@ -679,6 +713,8 @@ static json_t *json_array_deep_copy(const json_t *array, hashtable_t *parents) break; } } + +out: hashtable_del(parents, loop_key); return result; diff --git a/test/suites/api/test_object.c b/test/suites/api/test_object.c index ac10936..0493e98 100644 --- a/test/suites/api/test_object.c +++ b/test/suites/api/test_object.c @@ -209,7 +209,7 @@ static void test_conditional_updates() static void test_recursive_updates() { - json_t *invalid, *object, *other; + json_t *invalid, *object, *other, *barBefore, *barAfter; invalid = json_integer(42); @@ -241,6 +241,10 @@ static void test_recursive_updates() object = json_pack("{sis{si}}", "foo", 1, "bar", "baz", 2); other = json_pack("{s{si}}", "bar", "baz", 3); + barBefore = json_object_get(object, "bar"); + + if(!barBefore) + fail("can't get bar object before json_object_update_recursive"); if(json_object_update_recursive(object, other)) fail("json_object_update_recursive failed"); @@ -254,6 +258,33 @@ static void test_recursive_updates() if(json_integer_value(json_object_get(json_object_get(object, "bar"), "baz")) != 3) fail("json_object_update_recursive failed to update nested value"); + barAfter = json_object_get(object, "bar"); + if(!barAfter) + fail("can't get bar object after json_object_update_recursive"); + + if(barBefore != barAfter) + fail("bar object reference changed after json_object_update_recursive"); + + json_decref(object); + json_decref(other); + + /* check circular reference */ + object = json_pack("{s{s{si}}}", "foo", "bar", "baz", 2); + other = json_pack("{s{s{si}}}", "foo", "bar", "baz", 2); + json_object_set(json_object_get(json_object_get(object, "foo"), "bar"), "baz", + json_object_get(other, "foo")); + json_object_set(json_object_get(json_object_get(other, "foo"), "bar"), "baz", + json_object_get(other, "foo")); + + if(!json_object_update_recursive(object, other)) + fail("json_object_update_recursive update a circular reference!"); + + json_object_set_new(json_object_get(json_object_get(other, "foo"), "bar"), "baz", + json_integer(1)); + + if(json_object_update_recursive(object, other)) + fail("json_object_update_recursive failed!"); + json_decref(object); json_decref(other); } |