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/* 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 <stdint.h>
#include <stdlib.h>
#include <fluent-bit/flb_info.h>
#include <fluent-bit/flb_mem.h>
#include <fluent-bit/flb_pack.h>
#include <fluent-bit/flb_parser.h>
#include <fluent-bit/multiline/flb_ml.h>
#include <fluent-bit/multiline/flb_ml_parser.h>
#include <fluent-bit/multiline/flb_ml_rule.h>
#include "flb_fuzz_header.h"
static int flush_callback(struct flb_ml_parser *parser,
struct flb_ml_stream *mst, void *data, char *buf_data,
size_t buf_size) {
return 0;
}
struct record_check {
char *buf;
};
struct expected_result {
int current_record;
char *key;
struct record_check *out_records;
};
char *random_strings[4];
void test_multiline_parser(msgpack_object *root2, int rand_val) {
struct expected_result res = {0};
struct flb_config *config = NULL;
config = flb_config_init();
struct flb_ml *ml = NULL;
ml = flb_ml_create(config, "fuzz-test");
if (ml != NULL) {
uint64_t stream_ids[5];
flb_ml_parser_instance_create(ml, "docker");
flb_ml_parser_instance_create(ml, "python");
flb_ml_parser_instance_create(ml, "go");
flb_ml_parser_instance_create(ml, "cri");
struct flb_ml_parser_ins *mlp_i =
flb_ml_parser_instance_create(ml, "java");
flb_ml_parser_instance_set(mlp_i, "key_content", "log");
if (rand_val & 0x01) {
flb_ml_stream_create(ml, "java", -1, flush_callback, (void *)&res,
&(stream_ids[0]));
}
if (rand_val >> 1 & 0x01) {
flb_ml_stream_create(ml, "python", -1, flush_callback, (void *)&res,
&(stream_ids[1]));
}
if (rand_val >> 2 & 0x01) {
flb_ml_stream_create(ml, "go", -1, flush_callback, (void *)&res,
&(stream_ids[2]));
}
if (rand_val >> 3 & 0x01) {
flb_ml_stream_create(ml, "docker", -1, flush_callback, (void *)&res,
&(stream_ids[3]));
}
if (rand_val >> 4 & 0x01) {
flb_ml_stream_create(ml, "cri", -1, flush_callback, (void *)&res,
&(stream_ids[4]));
}
/* Target with msgpack object */
if (root2 != NULL) {
struct flb_time tm;
flb_time_get(&tm);
for (int i = 0; i < 4; i++) {
flb_ml_append_object(ml, stream_ids[i], &tm, NULL, root2);
}
}
/* Target with raw text */
struct flb_time tm2;
flb_time_get(&tm2);
for (int i = 0; i < 4; i++) {
for (int j = 0; j < 5; j++) {
if (random_strings[i] != NULL && stream_ids[j] != NULL) {
/* stream_ids index by j, random_strings index by i */
flb_ml_append_text(ml, stream_ids[j], &tm2,
random_strings[i], strlen(random_strings[i]));
flb_ml_append_text(ml, stream_ids[j], &tm2,
random_strings[i], strlen(random_strings[i]));
flb_ml_append_text(ml, stream_ids[j], &tm2,
random_strings[i], strlen(random_strings[i]));
flb_ml_append_text(ml, stream_ids[j], &tm2,
random_strings[i],strlen(random_strings[i]));
flb_ml_append_text(ml, stream_ids[j], &tm2,
random_strings[i], strlen(random_strings[i]));
}
}
}
}
flb_ml_flush_pending_now(ml);
if (ml) {
flb_ml_destroy(ml);
}
flb_config_exit(config);
}
int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
TIMEOUT_GUARD
/* Set fuzzer-malloc chance of failure */
flb_malloc_mod = 25000;
flb_malloc_p = 0;
/* Ensure there's enough data */
if (size < 250) {
return 0;
}
int rand_val = *(int *)data;
data += 4;
size -= 4;
for (int i = 0; i < 4; i++) {
random_strings[i] = NULL;
}
random_strings[0] = get_null_terminated(40, &data, &size);
random_strings[1] = get_null_terminated(40, &data, &size);
random_strings[2] = get_null_terminated(40, &data, &size);
random_strings[3] = get_null_terminated(40, &data, &size);
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;
/* Pass fuzz data into the multiline parser code */
test_multiline_parser(&root, rand_val);
}
msgpack_unpacked_destroy(&result);
free(out_buf);
} else {
test_multiline_parser(NULL, rand_val);
}
for (int i = 0; i < 4; i++) {
if (random_strings[i] != NULL) {
free(random_strings[i]);
}
}
return 0;
}
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