text: /*  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 <string.h>
  #include <stdlib.h>
  #include <msgpack.h>
  #include <fluent-bit/flb_mem.h>
  #include <fluent-bit/flb_utils.h>
  #include <fluent-bit/flb_slist.h>
  #include <fluent-bit/flb_gzip.h>
  #include <fluent-bit/flb_hash.h>
  #include <fluent-bit/flb_uri.h>
  #include <fluent-bit/flb_sha512.h>
  #include <fluent-bit/flb_regex.h>
  #include "flb_fuzz_header.h"
  
  int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
  {
      TIMEOUT_GUARD
  
      if (size < 600) {
          return 0;
      }
  
      /* Prepare a general null-terminated string */
      char *null_terminated = (char*)malloc(size+1);
      null_terminated[size] = '\0';
      memcpy(null_terminated, data, size);
  
      /* Fuzzing of flb_utils.c */
      int sec;
      long nsec;
      size_t new_size;
      char *prot    = NULL;
      char *host    = NULL;
      char *port    = NULL;
      char *uri     = NULL;
      char *new_dst = NULL;
  
      if (flb_utils_write_str_buf(null_terminated, size, &new_dst, &new_size) == 0) {
          flb_free(new_dst);
      }
  
      struct mk_list *list = flb_utils_split(null_terminated, 'A', 3);
      if (list != NULL) {
          flb_utils_split_free(list);
      }
  
      if (flb_utils_url_split(null_terminated, &prot, &host, &port, &uri) == 0) {
          flb_free(prot);
          flb_free(port);
          flb_free(host);
          flb_free(uri);
      }
  
      char *split_protocol = NULL;
      char *split_username = NULL;
      char *split_password = NULL;
      char *split_host     = NULL;
      char *split_port     = NULL;
      if (flb_utils_proxy_url_split(null_terminated, &split_protocol,
              &split_username, &split_password, &split_host, &split_port) == 0) {
          if (split_protocol) {
              flb_free(split_protocol);
          }
          if (split_username) {
              flb_free(split_username);
          }
          if (split_password) {
              flb_free(split_password);
          }
          if (split_host) {
              flb_free(split_host);
          }
          if (split_port) {
              flb_free(split_port);
          }
      }
  
  
      flb_utils_size_to_bytes(null_terminated);
      flb_utils_time_split(null_terminated, &sec, &nsec);
      flb_utils_time_to_seconds(null_terminated);
      flb_utils_bool(null_terminated);
      flb_utils_hex2int(null_terminated, size);
  
      /* Fuzzong of flb_uri.c */
      struct flb_uri *uri2 = NULL;
      uri2 = flb_uri_create(null_terminated);
      if (uri2 != NULL) {
          flb_uri_get(uri2, (int)data[0]);
          flb_uri_dump(uri2);
          flb_uri_destroy(uri2);
      }
      flb_sds_t encoded = flb_uri_encode((char*)data, size);
      if (encoded != NULL) {
          flb_sds_destroy(encoded);
      }
  
      /* Fuzzing of flb_hash.c */
      struct flb_hash *ht = NULL;
      ht = flb_hash_create((int)(data[2] % 0x04),
                           (size_t)data[0],
                           (int)data[1]);
      if (ht != NULL) {
          flb_hash_add(ht, null_terminated, size, null_terminated, size);
  
          char *out_buf = NULL;
          size_t out_size;
          flb_hash_get(ht, null_terminated, size, (void **)&out_buf, &out_size);
  
          /* now let's create some more instances */
          char *instances1[128] = { NULL };
          char *instances2[128] = { NULL };
          for (int i = 0; i < 128; i++) {
              char *in1 = malloc(3);
              char *in2 = malloc(3);
              memcpy(in1, data+(i*4), 2);
              memcpy(in2, data+(i*4)+2, 2);
              in1[2] = '\0';
              in2[2] = '\0';
              flb_hash_add(ht, in1, 2, in2, 2);
              instances1[i] = in1;
              instances2[i] = in2;
          }
  
          for(int i = 0; i < 20; i++) {
              char *hash_out_buf;
              size_t hash_out_size;
              flb_hash_get_by_id(ht, (int)data[i], null_terminated,
                                 (const char **)&hash_out_buf, &hash_out_size);
          }
  
          flb_hash_destroy(ht);
          for (int i =0; i<128; i++) {
              flb_free(instances1[i]);
              flb_free(instances2[i]);
          }
      }
  
      /* sds */
      flb_sds_t fs = flb_sds_create_len((const char*)data, size);
      if (fs != NULL) {
          fs = flb_sds_cat_esc(fs, "AAABBBCCC", 9, "ABC", 3);
          if (fs != NULL) {
              flb_sds_destroy(fs);
          }
      }
  
      /* Fuzzing of flb_gzip.c */
      void *str = NULL;
      size_t len;
      void *out_data = NULL;
      size_t out_len;
      if (flb_gzip_compress((char*)data, size, &str, &len) != -1) {
          flb_gzip_uncompress(str, len, &out_data, &out_len);
      }
      if (str != NULL) {
          free(str);
      }
      if (out_data != NULL) {
          free(out_data);
      }
      void *out_data2 = NULL;
      size_t out2_len;
      int uncompress_ret = flb_gzip_uncompress((char*)data, size, &out_data2, &out2_len);
      if (uncompress_ret != -1 && out_data2 != NULL) {
          flb_free(out_data2);
      }
  
      /* Fuzzing the sha routines */
      struct flb_sha512 sha512;
      uint8_t buf[64];
      flb_sha512_init(&sha512);
      flb_sha512_update(&sha512, null_terminated, 32);
      flb_sha512_update(&sha512, null_terminated+32, 32);
      flb_sha512_update(&sha512, null_terminated+64, 32);
      flb_sha512_sum(&sha512, buf);
  
  
      /* regex */
      char *pregex = "^(?<INT>[^ ]+) (?<FLOAT>[^ ]+) (?<BOOL>[^ ]+) (?<STRING>.+)$";
      flb_regex_init();
      struct flb_regex *freg = flb_regex_create(pregex);
      if (freg != NULL) {
          flb_regex_match(freg, (unsigned char*)null_terminated, size);
          flb_regex_destroy(freg);
      }
      flb_regex_exit();
  
      /* slist */
      struct mk_list list3;
      flb_slist_create(&list3);
      flb_sds_t slist_str = flb_sds_create_len((const char*)data, size);
      flb_slist_add_sds(&list3, slist_str);
      flb_slist_entry_get(&list3, 100);
      flb_slist_dump(&list3);
      flb_slist_destroy(&list3);
  
  
      /* General cleanup */
      flb_free(null_terminated);
      return 0;
  }
  