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#include <stdint.h>
#include <string.h>
#include <stdlib.h>
#include <fluent-bit/flb_parser.h>
#include <fluent-bit/flb_slist.h>
#include <fluent-bit/flb_kv.h>
#include "flb_fuzz_header.h"
/* A sample of configurations */
char conf_file[] = "# Parser: no_year\n"
"# ===============\n"
"# the given format don't contain the Year, this is a common\n"
"# case on old Syslog implementations.\n"
"#\n"
"[PARSER]\n"
" Name no_year\n"
" Format json\n"
" Time_Key time\n"
" Time_Format %b %d %H:%M:%S\n"
" Time_Keep On\n"
"\n"
"# Parser: no_year_N\n"
"# =================\n"
"# Just for compatibility, check a string with no year but including Nanoseconds.\n"
"#\n"
"[PARSER]\n"
" Name no_year_N\n"
" Format json\n"
" Time_Key time\n"
" Time_Format %b %d %H:%M:%S.%L\n"
" Time_Keep On\n"
"\n"
"# Parser: no_year_NC\n"
"# =================\n"
"# Just for compatibility, check a string with no year but including Nanoseconds with comma as fractional separator.\n"
"#\n"
"[PARSER]\n"
" Name no_year_NC\n"
" Format json\n"
" Time_Key time\n"
" Time_Format %b %d %H:%M:%S,%L\n"
" Time_Keep On\n"
"\n"
"# Parser: no_year_TZ\n"
"# =================\n"
"# Time string with no year and including timezone\n"
"#\n"
"[PARSER]\n"
" Name no_year_TZ\n"
" Format json\n"
" Time_Key time\n"
" Time_Format %b %d %H:%M:%S %z\n"
" Time_Keep On\n"
"\n"
"# Parser: no_year_N_TZ\n"
"# ====================\n"
"# Time string with no year, nanoseconds and timezone\n"
"#\n"
"[PARSER]\n"
" Name no_year_N_TZ\n"
" Format json\n"
" Time_Key time\n"
" Time_Format %b %d %H:%M:%S.%L %z\n"
" Time_Keep On\n"
"\n"
"\n"
"# Parser: no_year_NC_TZ\n"
"# ====================\n"
"# Time string with no year, nanoseconds and timezone with comma as fractional separator.\n"
"#\n"
"[PARSER]\n"
" Name no_year_NC_TZ\n"
" Format json\n"
" Time_Key time\n"
" Time_Format %b %d %H:%M:%S,%L %z\n"
" Time_Keep On\n"
"\n"
"\n"
"# Parser: default_UTC\n"
"# ===================\n"
"# Time string with timezone in UTC\n"
"#\n"
"[PARSER]\n"
" Name default_UTC\n"
" Format json\n"
" Time_Key time\n"
" Time_Format %m/%d/%Y %H:%M:%S\n"
" Time_Keep On\n"
"\n"
"# Parser: default_UTC_Z\n"
"# =====================\n"
"# Time string with timezone in UTC and ending Z\n"
"#\n"
"[PARSER]\n"
" Name default_UTC_Z\n"
" Format json\n"
" Time_Key time\n"
" Time_Format %m/%d/%Y %H:%M:%SZ\n"
" Time_Keep On\n"
"\n"
"# Parser: default_UTC_N_Z\n"
"# =======================\n"
"# Time string with timezone in UTC, nanoseconds and ending Z\n"
"#\n"
"[PARSER]\n"
" Name default_UTC_N_Z\n"
" Format json\n"
" Time_Key time\n"
" Time_Format %m/%d/%Y %H:%M:%S.%LZ\n"
" Time_Keep On\n"
"\n"
"# Parser: default_UTC_NC_Z\n"
"# =======================\n"
"# Time string with timezone in UTC, nanoseconds with comma as fractional separator and ending Z\n"
"#\n"
"[PARSER]\n"
" Name default_UTC_NC_Z\n"
" Format json\n"
" Time_Key time\n"
" Time_Format %m/%d/%Y %H:%M:%S,%LZ\n"
" Time_Keep On\n"
"\n"
"# Parser: generic_TZ\n"
"# ==================\n"
"# Generic date with timezone\n"
"#\n"
"[PARSER]\n"
" Name generic_TZ\n"
" Format json\n"
" Time_Key time\n"
" Time_Format %m/%d/%Y %H:%M:%S %z\n"
" Time_Keep On\n"
"\n"
"# Parser: generic\n"
"# ===============\n"
"# Generic date\n"
"#\n"
"[PARSER]\n"
" Name generic\n"
" Format json\n"
" Time_Key time\n"
" Time_Format %m/%d/%Y %H:%M:%S\n"
" Time_Keep On\n"
"\n"
"# Parser: generic_N\n"
"# ===============\n"
"# Generic date with nanoseconds\n"
"#\n"
"[PARSER]\n"
" Name generic_N\n"
" Format json\n"
" Time_Key time\n"
" Time_Format %m/%d/%Y %H:%M:%S.%L\n"
" Time_Keep On\n"
"\n"
"# Parser: generic_NC\n"
"# ===============\n"
"# Generic date with nanoseconds with comma as fractional separator\n"
"#\n"
"[PARSER]\n"
" Name generic_NC\n"
" Format json\n"
" Time_Key time\n"
" Time_Format %m/%d/%Y %H:%M:%S,%L\n"
" Time_Keep On\n"
"\n"
"# Parser: generic_N_TZ\n"
"# ====================\n"
"# Generic date with nanoseconds and timezone\n"
"#\n"
"[PARSER]\n"
" Name generic_N_TZ\n"
" Format json\n"
" Time_Key time\n"
" Time_Format %m/%d/%Y %H:%M:%S.%L %z\n"
" Time_Keep On\n"
"\n"
"# Parser: generic_NC_TZ\n"
"# ====================\n"
"# Generic date with nanoseconds with comma as fractional separator and timezone\n"
"#\n"
"[PARSER]\n"
" Name generic_NC_TZ\n"
" Format json\n"
" Time_Key time\n"
" Time_Format %m/%d/%Y %H:%M:%S,%L %z\n"
" Time_Keep On\n"
"\n"
"# Parser: apache_error\n"
"# ====================\n"
"# Apache error log time format\n"
"#\n"
"[PARSER]\n"
" Name apache_error\n"
" Format json\n"
" Time_Key time\n"
" Time_Format %a %b %d %H:%M:%S.%L %Y\n"
" Time_Keep On\n"
"# Parser: mysql_quoted_stuff\n"
"# ====================\n"
"# Apache error log time format\n"
"#\n"
"[PARSER]\n"
" Name mysql_quoted_stuff\n"
" Format regex\n"
" Regex ^(?<time>.*?),(?<key001>.*)$\n"
" Time_Key time\n"
" Time_Format %Y-%M-%S %H:%M:%S\n"
" Time_Keep On\n"
" Decode_Field_As mysql_quoted key001\n"
"# Parser: REGEX_generic_NC_TZ\n"
"# ====================\n"
"# Generic date with nanoseconds with comma as fractional separator and timezone\n"
"#\n"
"[PARSER]\n"
" Name REGEX_generic_NC_TZ\n"
" Format regex\n"
" Regex ^(?<key001>[^ ]*) (?<key002>[^ ]*) (?<time>.+)$\n"
" Time_Key time\n"
" Time_Format %m/%d/%Y %H:%M:%S,%L %z\n"
" Time_Keep On\n"
"\n"
"# Parser: REGEX_apache_error\n"
"# ====================\n"
"# Apache error log time format\n"
"#\n"
"[PARSER]\n"
" Name REGEX_apache_error\n"
" Format regex\n"
" Regex ^(?<key001>[^ ]*) (?<key002>[^ ]*) (?<time>.+)$\n"
" Time_Key time\n"
" Time_Format %a %b %d %H:%M:%S.%L %Y\n"
" Time_Keep On\n"
"\n"
"\n"
"\n"
"# Parser: REGEX_mysql_quoted_stuff\n"
"# ====================\n"
"# Apache error log time format\n"
"#\n"
"[PARSER]\n"
" Name REGEX_mysql_quoted_stuff\n"
" Format regex\n"
" Regex ^(?<time>.*?),(?<key001>.*)$\n"
" Time_Key time\n"
" Time_Format %Y-%M-%S %H:%M:%S\n"
" Time_Keep On\n"
" Decode_Field_As mysql_quoted key001\n"
"\n"
"\n"
"\n"
"# Parser: REGEX2_mysql_quoted_stuff\n"
"# ====================\n"
"# Apache error log time format\n"
"#\n"
"[PARSER]\n"
" Name REGEX2_mysql_quoted_stuff\n"
" Format logfmt\n"
" Regex ^(?<time>.*?),(?<key001>.*)$\n"
" Time_Key time\n"
" Time_Format %Y-%M-%S %H:%M:%S\n"
" Time_Keep On\n"
" Decode_Field_As mysql_quoted key001\n"
" Types A1:integer A2:string A3:bool A4:float A5:hex\n"
"\n"
"\n"
"\n"
"# Parser: REGEX3_mysql_quoted_stuff\n"
"# ====================\n"
"# Apache error log time format\n"
"#\n"
"[PARSER]\n"
" Name REGEX3_mysql_quoted_stuff\n"
" Format json\n"
" Regex ^(?<time>.*?),(?<key001>.*)$\n"
" Time_Key time\n"
" Time_Format %Y-%M-%S %H:%M:%S\n"
" Time_Keep On\n"
" Decode_Field_As escaped_utf8 key001\n"
" Types A1:integer A2:string A3:bool A4:float A5:hex\n"
"\n"
"\n"
"\n"
"# Parser: REGEX33_mysql_quoted_stuff\n"
"# ====================\n"
"# Apache error log time format\n"
"#\n"
"[PARSER]\n"
" Name REGEX33_mysql_quoted_stuff\n"
" Format json\n"
" Regex ^(?<time>.*?),(?<key001>.*)$\n"
" Time_Key time\n"
" Time_Format %Y-%M-%S %H:%M:%S\n"
" Time_Keep On\n"
" Decode_Field_As escaped key001\n"
" Types A1:integer A2:string A3:bool A4:float A5:hex\n"
"\n"
"\n"
"\n"
"# Parser: REGEX4_mysql_quoted_stuff\n"
"# ====================\n"
"# Apache error log time format\n"
"#\n"
"[PARSER]\n"
" Name REGEX4_mysql_quoted_stuff\n"
" Format json\n"
" Regex ^(?<time>.*?),(?<key001>.*)$\n"
" Time_Key time\n"
" Time_Format %Y-%M-%S %H:%M:%S\n"
" Time_Keep On\n"
" Decode_Field_As json key001\n"
" Types A1:integer A2:string A3:bool A4:float A5:hex\n"
"[MULTILINE_PARSER]\n"
" name exception_test\n"
" type regex\n"
" flush_timeout 1000\n"
" rule \"start_state\" \"/(Dec \\d+ \\d+\\:\\d+\\:\\d+)(.*)/\" \"cont\"\n"
" rule \"cont\" \"/^\\s+at.*/\" \"cont\"\n";
int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
{
/* Set fuzzer-malloc chance of failure */
flb_malloc_p = 0;
flb_malloc_mod = 25000;
/* Limit the size of the config files to 32KB. */
if (size > 32768) {
return 0;
}
/* Write the config file to a location we know OSS-Fuzz has */
char filename[256];
sprintf(filename, "/tmp/libfuzzer.%d", getpid());
FILE *fp = fopen(filename, "wb");
if (!fp) {
return 0;
}
fwrite(conf_file, strlen(conf_file), 1, fp);
fclose(fp);
/* Now parse random data based on the config files */
struct flb_config *config = NULL;
config = flb_config_init();
int ret = flb_parser_conf_file(filename, config);
if (ret == 0) {
struct mk_list *head = NULL;
mk_list_foreach(head, &config->parsers) {
size_t out_size;
char *out_buf = NULL;
struct flb_parser *parser = NULL;
struct flb_time out_time;
parser = mk_list_entry(head, struct flb_parser, _head);
flb_parser_do(parser, (const char*)data, size, (void **)&out_buf,
&out_size, &out_time);
if (out_buf != NULL) {
free(out_buf);
}
}
}
flb_parser_exit(config);
flb_config_exit(config);
if (size > 100) {
/* Now let's do a second run where we also call flb_config_set_property */
config = flb_config_init();
ret = flb_parser_conf_file(filename, config);
char *key_1 = get_null_terminated(15, &data, &size);
char *val_1 = get_null_terminated(15, &data, &size);
char *key_2 = get_null_terminated(15, &data, &size);
char *val_2 = get_null_terminated(15, &data, &size);
char *progname = get_null_terminated(15, &data, &size);
flb_config_set_property(config, key_1, val_1);
flb_config_set_property(config, key_2, val_2);
flb_config_set_program_name(config, progname);
set_log_level_from_env(config);
struct mk_list prop;
flb_kv_init(&prop);
flb_kv_item_create(&prop, key_1, val_1);
flb_config_prop_get(progname, &prop);
flb_slist_entry_get(&prop, (int)data[0]);
flb_slist_dump(&prop);
if (ret == 0) {
struct mk_list *head = NULL;
mk_list_foreach(head, &config->parsers) {
size_t out_size;
char *out_buf = NULL;
struct flb_parser *parser = NULL;
struct flb_time out_time;
parser = mk_list_entry(head, struct flb_parser, _head);
flb_parser_do(parser, (const char*)data, size, (void **)&out_buf,
&out_size, &out_time);
if (out_buf != NULL) {
free(out_buf);
}
}
}
flb_parser_exit(config);
flb_config_exit(config);
flb_free(key_1);
flb_free(val_1);
flb_free(key_2);
flb_free(val_2);
flb_free(progname);
flb_kv_release(&prop);
}
/* clean up the file */
unlink(filename);
return 0;
}
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