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#include <stdio.h>
#include <arpa/inet.h>
#include <MESA/stream.h>
#include <MESA/dns.h>
#include <MESA/cJSON.h>
#include <MESA_prof_load.h>
#include <MESA/Maat_rule.h>
#include <MESA/MESA_handle_logger.h>
#include "tsg_rule.h"
#include "tsg_label.h"
#include "tsg_send_log.h"
#include "tsg_statistic.h"
#ifdef __cplusplus
extern "C"
{
#endif
#define GIT_VERSION_CATTER(v) __attribute__((__used__)) const char * GIT_VERSION_##v = NULL
#define GIT_VERSION_EXPEND(v) GIT_VERSION_CATTER(v)
/* VERSION TAG */
#ifdef GIT_VERSION
GIT_VERSION_EXPEND(GIT_VERSION);
#else
static __attribute__((__used__)) const char * GIT_VERSION_UNKNOWN = NULL;
#endif
#undef GIT_VERSION_CATTER
#undef GIT_VERSION_EXPEND
#ifdef __cplusplus
}
#endif
#define MAX_TABLE_NAME_LEN 256
struct fw_dns_plug
{
int level;
int table_qname_id;
char table_qname[MAX_TABLE_NAME_LEN];
char log_path[MAX_TABLE_NAME_LEN*2];
void *logger;
};
char FW_DNS_PLUG_VERSION_20210607=0;
struct fw_dns_plug g_fw_dns_plug_info;
char *g_fw_dns_conffile=(char *)"tsgconf/main.conf";
static int fw_dns_send_log(struct streaminfo *a_stream, dns_info_t *dns_info, struct Maat_rule_t *result, int result_num, int thread_seq)
{
int i=0;
dns_rr_t *rr=NULL;
tsg_log_t log_msg;
int dns_sec=1;
struct TLD_handle_t *handle=NULL;
char *cname=NULL,*rr_buf=NULL;
handle=TLD_create(thread_seq);
TLD_append(handle, (char *)"dns_qr", (void *)(long)dns_info->hdr_info.qr, TLD_TYPE_LONG);
TLD_append(handle, (char *)"dns_aa", (void *)(long)dns_info->hdr_info.aa, TLD_TYPE_LONG);
TLD_append(handle, (char *)"dns_message_id", (void *)(long)dns_info->hdr_info.id, TLD_TYPE_LONG);
TLD_append(handle, (char *)"dns_opcode", (void *)(long)dns_info->hdr_info.opcode, TLD_TYPE_LONG);
TLD_append(handle, (char *)"dns_ra", (void *)(long)dns_info->hdr_info.ra, TLD_TYPE_LONG);
TLD_append(handle, (char *)"dns_rcode", (void *)(long)dns_info->hdr_info.rcode, TLD_TYPE_LONG);
TLD_append(handle, (char *)"dns_rd", (void *)(long)dns_info->hdr_info.rd, TLD_TYPE_LONG);
TLD_append(handle, (char *)"dns_tc", (void *)(long)dns_info->hdr_info.tc, TLD_TYPE_LONG);
TLD_append(handle, (char *)"dns_qdcount", (void *)(long)dns_info->hdr_info.qdcount, TLD_TYPE_LONG);
TLD_append(handle, (char *)"dns_ancount", (void *)(long)dns_info->hdr_info.ancount, TLD_TYPE_LONG);
TLD_append(handle, (char *)"dns_nscount", (void *)(long)dns_info->hdr_info.aucount, TLD_TYPE_LONG);
TLD_append(handle, (char *)"dns_arcount", (void *)(long)dns_info->hdr_info.adcount, TLD_TYPE_LONG);
if((strlen((char *)dns_info->query_question.qname)) >0)
{
TLD_append(handle, (char *)"dns_qname", (void *)dns_info->query_question.qname, TLD_TYPE_STRING);
TLD_append(handle, (char *)"dns_qtype", (void *)(long)dns_info->query_question.qtype, TLD_TYPE_LONG);
TLD_append(handle, (char *)"dns_qclass", (void *)(long)dns_info->query_question.qclass, TLD_TYPE_LONG);
}
cJSON *item=NULL;
cJSON *cname_array=cJSON_CreateArray();
for(i=0; i<dns_info->rr_count && dns_info->rr != NULL; i++)
{
rr = &dns_info->rr[i];
if(rr!=NULL && rr->type==DNS_TYPE_CNAME)
{
if(rr->rdata.cname != NULL)
{
item=cJSON_CreateString((const char *)rr->rdata.cname);
cJSON_AddItemToArray(cname_array, item);
}
}
}
cname=cJSON_PrintUnformatted(cname_array);
if(cname!=NULL && strlen(cname)>0)
{
TLD_append(handle, (char *)"dns_cname", (void *)cname, TLD_TYPE_STRING);
cJSON_free(cname);
cname=NULL;
}
cJSON_Delete(cname_array);
cname_array=NULL;
cJSON * object=cJSON_CreateObject();
get_rr_str2json(object, dns_info, &dns_sec);
rr_buf=cJSON_PrintUnformatted(object);
TLD_append(handle, (char *)"dns_rr", (void *)rr_buf, TLD_TYPE_STRING);
cJSON_Delete(object);
object=NULL;
cJSON_free(rr_buf);
rr_buf=NULL;
TLD_append(handle, (char *)"dns_sub", (void *)(long)dns_sec, TLD_TYPE_LONG);
TLD_append(handle, (char *)"common_schema_type", (void *)"DNS", TLD_TYPE_STRING);
log_msg.a_stream=a_stream;
log_msg.result=result;
log_msg.result_num=result_num;
tsg_send_log(g_tsg_log_instance, handle, &log_msg, thread_seq);
tsg_set_policy_flow(a_stream, result, a_stream->threadnum);
return 0;
}
extern "C" char FW_DNS_PLUG_ENTRY(stSessionInfo* session_info, void **pme, int thread_seq,struct streaminfo *a_stream,const void *a_packet)
{
int ret=0,hit_num=0;
scan_status_t mid=NULL;
int category_id_num=0;
char state=PROT_STATE_GIVEME;
unsigned int category_id[MAX_CATEGORY_ID_NUM]={0};
struct Maat_rule_t result[MAX_RESULT_NUM], *p_result=NULL;
dns_info_t *dns_info=(dns_info_t *)session_info->app_info;
if(dns_info==NULL || a_stream==NULL)
{
return state;
}
if(strlen((char *)dns_info->query_question.qname)==0)
{
MESA_handle_runtime_log(g_fw_dns_plug_info.logger,
RLOG_LV_DEBUG,
"DNS_PLUG",
"Qname is %s, addr: %s",
(dns_info==NULL) ? "NULL" : ((strlen((char *)dns_info->query_question.qname)==0) ? "NULL" : (char *)dns_info->query_question.qname),
PRINTADDR(a_stream, g_fw_dns_plug_info.level)
);
return state;
}
ret=tsg_scan_nesting_addr(g_tsg_maat_feather, a_stream, PROTO_DNS, &mid, result, MAX_RESULT_NUM-hit_num);
if(ret>0)
{
MESA_handle_runtime_log(g_fw_dns_plug_info.logger,
RLOG_LV_DEBUG,
"SCAN_NEST_ADDR",
"Hit policy_id: %d service: %d action: %d domain: %s qtype: %d addr: %s",
result[hit_num].config_id,
result[hit_num].service_id,
result[hit_num].action,
(char *)dns_info->query_question.qname,
dns_info->query_question.qtype,
PRINTADDR(a_stream, g_fw_dns_plug_info.level)
);
hit_num+=ret;
}
else
{
MESA_handle_runtime_log(g_fw_dns_plug_info.logger,
RLOG_LV_DEBUG,
"SCAN_NEST_ADDR",
"Scan domain: %s qtype: %d ret: %d addr: %s",
(char *)dns_info->query_question.qname,
dns_info->query_question.qtype,
ret,
PRINTADDR(a_stream, g_fw_dns_plug_info.level)
);
}
ret=Maat_full_scan_string(g_tsg_maat_feather,
g_fw_dns_plug_info.table_qname_id,
CHARSET_UTF8,
(char *)dns_info->query_question.qname,
strlen((char *)dns_info->query_question.qname),
result+hit_num,
NULL,
MAX_RESULT_NUM-hit_num,
&mid,
thread_seq
);
if(ret>0)
{
MESA_handle_runtime_log(g_fw_dns_plug_info.logger,
RLOG_LV_DEBUG,
"SCAN_DOMAIN",
"Hit domain: %s qtype: %d policy_id: %d service: %d action: %d addr: %s",
(char *)dns_info->query_question.qname,
dns_info->query_question.qtype,
result[hit_num].config_id,
result[hit_num].service_id,
result[hit_num].action,
PRINTADDR(a_stream, g_fw_dns_plug_info.level)
);
hit_num+=ret;
}
else
{
MESA_handle_runtime_log(g_fw_dns_plug_info.logger,
RLOG_LV_DEBUG,
"SCAN_DOMAIN",
"Scan domain: %s qtype: %d ret: %d addr: %s",
(char *)dns_info->query_question.qname,
dns_info->query_question.qtype,
ret,
PRINTADDR(a_stream, g_fw_dns_plug_info.level)
);
}
category_id_num=tsg_get_fqdn_category_id(g_tsg_maat_feather, (char *)dns_info->query_question.qname, category_id, MAX_CATEGORY_ID_NUM, g_fw_dns_plug_info.logger, thread_seq);
tsg_set_fqdn_category_id(a_stream, category_id, category_id_num, thread_seq);
hit_num+=tsg_scan_fqdn_category_id(g_tsg_maat_feather, a_stream, result+hit_num,MAX_RESULT_NUM-hit_num, &mid, g_fw_dns_plug_info.table_qname_id, category_id, category_id_num, thread_seq);
if(hit_num>0)
{
p_result=tsg_fetch_deny_rule(result, hit_num);
if(p_result!=NULL)
{
state=tsg_deal_deny_action(a_stream, p_result, PROTO_DNS, ACTION_RETURN_TYPE_PROT, (const void *)dns_info);
if(state!=PROT_STATE_GIVEME)
{
fw_dns_send_log(a_stream, dns_info, p_result, 1, thread_seq);
}
}
else
{
fw_dns_send_log(a_stream, dns_info, result, hit_num, thread_seq);
tsg_notify_hited_monitor_result(a_stream, result, hit_num, thread_seq);
}
}
if(mid!=NULL)
{
Maat_clean_status(&mid);
mid=NULL;
}
return state;
}
extern "C" int FW_DNS_PLUG_INIT(void)
{
memset(&g_fw_dns_plug_info, 0, sizeof(g_fw_dns_plug_info));
MESA_load_profile_int_def(g_fw_dns_conffile, "DNS_PLUG", "LOG_LEVEL", &g_fw_dns_plug_info.level, RLOG_LV_FATAL);
MESA_load_profile_string_def(g_fw_dns_conffile, "DNS_PLUG", "LOG_PATH", g_fw_dns_plug_info.log_path, sizeof(g_fw_dns_plug_info.log_path), "tsglog/fw_dns_plug/fw_dns_plug");
MESA_load_profile_string_def(g_fw_dns_conffile, "DNS_PLUG", "TABLE_QNAME", g_fw_dns_plug_info.table_qname, MAX_TABLE_NAME_LEN, "TSG_FIELD_DNS_QNAME");
g_fw_dns_plug_info.logger=MESA_create_runtime_log_handle(g_fw_dns_plug_info.log_path, g_fw_dns_plug_info.level);
if(g_fw_dns_plug_info.logger==NULL)
{
printf("MESA_create_runtime_log_handle failed, log_path: %s level: %d", (g_fw_dns_plug_info.log_path==NULL) ? NULL : g_fw_dns_plug_info.log_path, g_fw_dns_plug_info.level);
return -1;
}
g_fw_dns_plug_info.table_qname_id=Maat_table_register(g_tsg_maat_feather, g_fw_dns_plug_info.table_qname);
if(g_fw_dns_plug_info.table_qname_id<0)
{
MESA_handle_runtime_log(g_fw_dns_plug_info.logger, RLOG_LV_FATAL, "REGISTER_TABLE", "Maat_table_register failed, table_name: %s", g_fw_dns_plug_info.table_qname);
return -1;
}
return 0;
}
extern "C" void FW_DNS_PLUG_DESTROY(void)
{
return ;
}
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