1 files changed, 82 insertions, 0 deletions
diff --git a/fluent-bit/tests/internal/fuzzers/flb_json_fuzzer.c b/fluent-bit/tests/internal/fuzzers/flb_json_fuzzer.c
new file mode 100644
index 00000000..916b1a51
--- /dev/null
+++ b/fluent-bit/tests/internal/fuzzers/flb_json_fuzzer.c
@@ -0,0 +1,82 @@
+/*  Fluent Bit
+ *  ==========
+ *  Copyright (C) 2019-2021 The Fluent Bit Authors
+ *  Copyright (C) 2015-2018 Treasure Data Inc.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+#include <stdlib.h>
+#include <stdint.h>
+#include <fluent-bit/flb_pack.h>
+#include <fluent-bit/flb_str.h>
+#include "flb_fuzz_header.h"
+
+int LLVMFuzzerTestOneInput(unsigned char *data, size_t size)
+{
+    TIMEOUT_GUARD
+    /* Set fuzzer-malloc chance of failure */
+    flb_malloc_p = 0;
+    flb_malloc_mod = 25000;
+
+    if (size < 1) {
+        return 0;
+    }
+    unsigned char decider = *data;
+    data++;
+    size--;
+
+    /* json packer */
+    char *out_buf = NULL;
+    size_t out_size;
+    int root_type;
+    int ret = flb_pack_json((char*)data, size, &out_buf, &out_size, &root_type, NULL);
+
+    if (ret == 0) {
+        size_t off = 0;
+        msgpack_unpacked result;
+        msgpack_unpacked_init(&result);
+        int ret2 = msgpack_unpack_next(&result, out_buf, out_size, &off);
+        if (ret2 == MSGPACK_UNPACK_SUCCESS) {
+            msgpack_object root = result.data;
+            char *tmp = NULL;
+            tmp = flb_msgpack_to_json_str(0, &root);
+            if (tmp != NULL) {
+                flb_free(tmp);
+            }
+        }
+        msgpack_unpacked_destroy(&result);
+        flb_sds_t d;
+        d = flb_sds_create("date");
+        if (decider < 0x30) {
+            flb_sds_t ret_s = flb_pack_msgpack_to_json_format(out_buf, out_size,
+                    FLB_PACK_JSON_FORMAT_LINES,
+                    (int)decider, d);
+            free(out_buf);
+            if (ret_s != NULL) {
+                flb_sds_destroy(ret_s);
+            }
+        }
+        else {
+            flb_sds_t ret_s = flb_pack_msgpack_to_json_format(out_buf, out_size,
+                    FLB_PACK_JSON_FORMAT_LINES,
+                    FLB_PACK_JSON_DATE_EPOCH, NULL);
+            free(out_buf);
+            if (ret_s != NULL) {
+                flb_sds_destroy(ret_s);
+            }
+        }
+        flb_sds_destroy(d);
+    }
+
+    return 0;
+}