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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include <assert.h>
#include <arpa/inet.h>
#ifdef __cplusplus
extern "C"
{
#include "cJSON.h"
#include "dns_decoder.h"
#include "stellar/stellar.h"
#include "stellar/session.h"
#include "stellar/session_exdata.h"
#include "stellar/session_mq.h"
}
#endif
struct dns_decoder_test_plugin_env
{
int plugin_id;
int topic_id;
int result_index;
};
extern "C" int commit_test_result_json(cJSON *node, const char *name);
void dns_real_result_write_file(char *result_str)
{
FILE *fp=fopen("dns_real_result.json", "a+");
if(fp!=NULL)
{
fwrite(result_str, 1, strlen(result_str), fp);
fclose(fp);
}
}
void dns_resource_record_str2hex_append(cJSON *one_rr_object, uint8_t *str, size_t str_sz, const char *key)
{
if(one_rr_object==NULL || str==NULL || str_sz==0 || key==NULL)
{
return;
}
size_t offset=0;
char hex_buff[4096]={0};
size_t hex_buff_sz=sizeof(hex_buff);
for(size_t i=0; i<str_sz && i<hex_buff_sz/2; i++)
{
offset+=snprintf((char *)(hex_buff+offset), hex_buff_sz-offset, "%02x", str[i]);
if(offset+2 >= hex_buff_sz)
{
break;
}
}
if(offset>0)
{
cJSON_AddStringToObject(one_rr_object, key, hex_buff);
}
}
void dns_resource_record_dstring_append(cJSON *one_rr_object, struct dstring *dstr, const char *key)
{
if(dstr->value_sz > 0)
{
cJSON_AddStringToObject(one_rr_object, key, (char *)(dstr->value));
}
}
int dns_resource_record_json_exporter(cJSON *object, struct dns_resource_record *rr_array, uint16_t n_rr, const char *rr_type, int *dns_sec)
{
if(object==NULL || rr_array==NULL || n_rr==0 || dns_sec==NULL)
{
return 0;
}
char ip_str[128];
cJSON *dns_rr_array=cJSON_CreateArray();
for(uint16_t i=0; i<n_rr; i++)
{
cJSON *one_rr_object=cJSON_CreateObject();
struct dns_resource_record *dns_rr=&(rr_array[i]);
if(dns_rr->type == DNS_RR_TYPE_OPT)
{
cJSON_AddStringToObject(one_rr_object, "name", (const char *)(dns_rr->qname.value));
cJSON_AddNumberToObject(one_rr_object, "type", dns_rr->type);
cJSON_AddNumberToObject(one_rr_object, "udp_payload", dns_rr->rr_class);
cJSON_AddNumberToObject(one_rr_object, "rcode", (int)(dns_rr->ttl>>24));
cJSON_AddNumberToObject(one_rr_object, "version", (int)((dns_rr->ttl>>16)&0xFF));
cJSON_AddNumberToObject(one_rr_object, "Z", (int)(dns_rr->ttl&&0xFFFF));
cJSON_AddNumberToObject(one_rr_object, "rdlength", dns_rr->rdlength);
}
else
{
cJSON_AddStringToObject(one_rr_object, "name", (const char *)(dns_rr->qname.value));
cJSON_AddNumberToObject(one_rr_object, "type", dns_rr->type);
cJSON_AddNumberToObject(one_rr_object, "class", dns_rr->rr_class);
cJSON_AddNumberToObject(one_rr_object, "ttl", dns_rr->ttl);
cJSON_AddNumberToObject(one_rr_object, "rdlength", dns_rr->rdlength);
}
if(dns_rr->rdlength==0)
{
cJSON_AddItemToArray(dns_rr_array, one_rr_object);
continue;
}
switch(dns_rr->type)
{
case DNS_RR_TYPE_A:
inet_ntop(AF_INET, (void *)(dns_rr->rdata.a.value), ip_str, sizeof(ip_str));
cJSON_AddStringToObject(one_rr_object, "a", ip_str);
break;
case DNS_RR_TYPE_AAAA:
inet_ntop(AF_INET6, dns_rr->rdata.aaaa.value, ip_str, sizeof(ip_str));
cJSON_AddStringToObject(one_rr_object, "aaaa", ip_str);
break;
case DNS_RR_TYPE_NS:
dns_resource_record_dstring_append(one_rr_object, &(dns_rr->rdata.ns), "ns");
break;
case DNS_RR_TYPE_MD:
dns_resource_record_dstring_append(one_rr_object, &(dns_rr->rdata.md), "md");
break;
case DNS_RR_TYPE_MF:
dns_resource_record_dstring_append(one_rr_object, &(dns_rr->rdata.mf), "mf");
break;
case DNS_RR_TYPE_CNAME:
dns_resource_record_dstring_append(one_rr_object, &(dns_rr->rdata.cname), "cname");
break;
case DNS_RR_TYPE_MB:
dns_resource_record_dstring_append(one_rr_object, &(dns_rr->rdata.mb), "mb");
break;
case DNS_RR_TYPE_MG:
dns_resource_record_dstring_append(one_rr_object, &(dns_rr->rdata.mg), "mg");
break;
case DNS_RR_TYPE_MR:
dns_resource_record_dstring_append(one_rr_object, &(dns_rr->rdata.mr), "mr");
break;
case DNS_RR_TYPE_TXT:
dns_resource_record_dstring_append(one_rr_object, &(dns_rr->rdata.txt), "txt");
cJSON_AddNumberToObject(one_rr_object, "size", dns_rr->rdata.txt.value_sz);
break;
case DNS_RR_TYPE_NULL:
dns_resource_record_dstring_append(one_rr_object, &(dns_rr->rdata.null), "null");
cJSON_AddNumberToObject(one_rr_object, "size", dns_rr->rdata.null.value_sz);
break;
case DNS_RR_TYPE_PTR:
dns_resource_record_dstring_append(one_rr_object, &(dns_rr->rdata.ptr), "ptr");
break;
case DNS_RR_TYPE_HINFO:
dns_resource_record_dstring_append(one_rr_object, &(dns_rr->rdata.hinfo.cpu), "cpu");
dns_resource_record_dstring_append(one_rr_object, &(dns_rr->rdata.hinfo.os), "os");
break;
case DNS_RR_TYPE_MINFO:
dns_resource_record_dstring_append(one_rr_object, &(dns_rr->rdata.minfo.rmailbx), "rmailbx");
dns_resource_record_dstring_append(one_rr_object, &(dns_rr->rdata.minfo.emailbx), "emailbx");
break;
case DNS_RR_TYPE_MX:
dns_resource_record_dstring_append(one_rr_object, &(dns_rr->rdata.mx.exchange), "exchange");
cJSON_AddNumberToObject(one_rr_object, "preference", dns_rr->rdata.mx.preference);
break;
case DNS_RR_TYPE_RP:
dns_resource_record_dstring_append(one_rr_object, &(dns_rr->rdata.rp.mailbox), "mailbox");
dns_resource_record_dstring_append(one_rr_object, &(dns_rr->rdata.rp.txt_rr), "txt_rr");
break;
case DNS_RR_TYPE_SOA:
dns_resource_record_dstring_append(one_rr_object, &(dns_rr->rdata.soa.mname), "mname");
dns_resource_record_dstring_append(one_rr_object, &(dns_rr->rdata.soa.rname), "rname");
cJSON_AddNumberToObject(one_rr_object, "serial", dns_rr->rdata.soa.serial);
cJSON_AddNumberToObject(one_rr_object, "refresh", dns_rr->rdata.soa.refresh);
cJSON_AddNumberToObject(one_rr_object, "retry", dns_rr->rdata.soa.retry);
cJSON_AddNumberToObject(one_rr_object, "cname", dns_rr->rdata.soa.expire);
cJSON_AddNumberToObject(one_rr_object, "minimum", dns_rr->rdata.soa.minimum);
break;
case DNS_RR_TYPE_WKS:
cJSON_AddStringToObject(one_rr_object, "addr", ip_str);
cJSON_AddNumberToObject(one_rr_object, "protocol", dns_rr->rdata.wks.protocol);
cJSON_AddNumberToObject(one_rr_object, "size", dns_rr->rdata.wks.size);
dns_resource_record_str2hex_append(one_rr_object, dns_rr->rdata.wks.bitmap, dns_rr->rdata.wks.size, "bitmap");
break;
case DNS_RR_TYPE_OPT:
break;
case DNS_RR_TYPE_DS:
*dns_sec = 2;
cJSON_AddNumberToObject(one_rr_object, "key_tag", dns_rr->rdata.ds.key_tag);
cJSON_AddNumberToObject(one_rr_object, "algo", dns_rr->rdata.ds.algo);
cJSON_AddNumberToObject(one_rr_object, "digest_type", dns_rr->rdata.ds.digest_type);
cJSON_AddNumberToObject(one_rr_object, "digest_len", dns_rr->rdata.ds.digest_len);
dns_resource_record_str2hex_append(one_rr_object, dns_rr->rdata.ds.digest, dns_rr->rdata.ds.digest_len, "digest");
break;
case DNS_RR_TYPE_RRSIG:
*dns_sec = 2;
cJSON_AddNumberToObject(one_rr_object, "type_covered", dns_rr->rdata.rrsig.type_covered);
cJSON_AddNumberToObject(one_rr_object, "algo", dns_rr->rdata.rrsig.algo);
cJSON_AddNumberToObject(one_rr_object, "labels", dns_rr->rdata.rrsig.labels);
cJSON_AddNumberToObject(one_rr_object, "original_ttl", dns_rr->rdata.rrsig.original_ttl);
cJSON_AddNumberToObject(one_rr_object, "sig_expiration", dns_rr->rdata.rrsig.sig_expiration);
cJSON_AddNumberToObject(one_rr_object, "sig_inception", dns_rr->rdata.rrsig.sig_inception);
cJSON_AddNumberToObject(one_rr_object, "key_tag", dns_rr->rdata.rrsig.key_tag);
dns_resource_record_dstring_append(one_rr_object, &(dns_rr->rdata.rrsig.signer_name), "signer_name");
cJSON_AddNumberToObject(one_rr_object, "signature_len", dns_rr->rdata.rrsig.signature_len);
dns_resource_record_str2hex_append(one_rr_object, dns_rr->rdata.rrsig.signature, dns_rr->rdata.rrsig.signature_len, "signature");
break;
case DNS_RR_TYPE_NSEC:
*dns_sec = 2;
dns_resource_record_dstring_append(one_rr_object, &(dns_rr->rdata.nsec.next_domain), "next_domain");
cJSON_AddNumberToObject(one_rr_object, "maps_len", dns_rr->rdata.nsec.type_bit_maps.value_sz);
dns_resource_record_str2hex_append(one_rr_object, dns_rr->rdata.nsec.type_bit_maps.value, dns_rr->rdata.nsec.type_bit_maps.value_sz, "type_bit_maps");
break;
case DNS_RR_TYPE_DNSKEY:
*dns_sec = 2;
cJSON_AddNumberToObject(one_rr_object, "flags", dns_rr->rdata.dnskey.flags);
cJSON_AddNumberToObject(one_rr_object, "protocol", dns_rr->rdata.dnskey.protocol);
cJSON_AddNumberToObject(one_rr_object, "algo", dns_rr->rdata.dnskey.algo);
cJSON_AddNumberToObject(one_rr_object, "public_key_len", dns_rr->rdata.dnskey.public_key_len);
dns_resource_record_str2hex_append(one_rr_object, dns_rr->rdata.dnskey.public_key, dns_rr->rdata.dnskey.public_key_len, "public_key");
break;
case DNS_RR_TYPE_NSEC3:
*dns_sec = 2;
cJSON_AddNumberToObject(one_rr_object, "hash_algo", dns_rr->rdata.nsec3.hash_algo);
cJSON_AddNumberToObject(one_rr_object, "flags", dns_rr->rdata.nsec3.flags);
cJSON_AddNumberToObject(one_rr_object, "iteration", dns_rr->rdata.nsec3.iteration);
cJSON_AddNumberToObject(one_rr_object, "salt_len", dns_rr->rdata.nsec3.salt_len);
dns_resource_record_str2hex_append(one_rr_object, dns_rr->rdata.nsec3.salt_value, dns_rr->rdata.nsec3.salt_len, "salt_value");
cJSON_AddNumberToObject(one_rr_object, "hash_len", dns_rr->rdata.nsec3.hash_len);
dns_resource_record_str2hex_append(one_rr_object, dns_rr->rdata.nsec3.next_hash_owner, dns_rr->rdata.nsec3.hash_len, "next_hash_owner");
cJSON_AddNumberToObject(one_rr_object, "maps_len", dns_rr->rdata.nsec3.type_bit_maps.value_sz);
dns_resource_record_str2hex_append(one_rr_object, dns_rr->rdata.nsec3.type_bit_maps.value,dns_rr->rdata.nsec3.type_bit_maps.value_sz, "type_bit_maps");
break;
case DNS_RR_TYPE_NSEC3PARAM:
cJSON_AddNumberToObject(one_rr_object, "hash_algo", dns_rr->rdata.nsec3param.hash_algo);
cJSON_AddNumberToObject(one_rr_object, "flags", dns_rr->rdata.nsec3param.flags);
cJSON_AddNumberToObject(one_rr_object, "iteration", dns_rr->rdata.nsec3param.iteration);
cJSON_AddNumberToObject(one_rr_object, "salt_len", dns_rr->rdata.nsec3param.salt_len);
dns_resource_record_str2hex_append(one_rr_object, dns_rr->rdata.nsec3param.salt_value, dns_rr->rdata.nsec3param.salt_len, "salt_value");
break;
default:
break;
}
cJSON_AddItemToArray(dns_rr_array, one_rr_object);
}
cJSON_AddItemToObject(object, rr_type, dns_rr_array);
return 1;
}
void dns_decoder_test_message_cb(struct session *ss, int topic_id, const void *msg, void *per_session_ctx, void *plugin_env_str)
{
struct dns_message *dns_msg=(struct dns_message *)msg;
enum dns_message_type type=dns_message_type_get(dns_msg);
if(type==DNS_MESSAGE_TRANSACTION_BEGIN || type==DNS_MESSAGE_TRANSACTION_END)
{
return;
}
//uint16_t id=dns_message_header_id_get(dns_msg);
struct dns_decoder_test_plugin_env *plugin_env=(struct dns_decoder_test_plugin_env *)plugin_env_str;
cJSON *real_result=cJSON_CreateObject();
cJSON_AddStringToObject(real_result, "Tuple4", session_get0_readable_addr(ss));
uint16_t n_question=0;
struct dns_query_question *question=NULL;
dns_message_question_get0(dns_msg, &question, &n_question);
if(n_question>0 && question!=NULL)
{
cJSON_AddStringToObject(real_result, "dns_qname", (char *)question->qname);
cJSON_AddNumberToObject(real_result, "dns_qtype", question->qtype);
cJSON_AddNumberToObject(real_result, "dns_qclass", question->qclass);
}
struct dns_flag *flag=dns_message_header_flag_get0(dns_msg);
if(flag!=NULL)
{
cJSON_AddNumberToObject(real_result, "dns_qr", (double)(flag->qr));
cJSON_AddNumberToObject(real_result, "dns_opcode", (double)(flag->opcode));
cJSON_AddNumberToObject(real_result, "dns_rd", (double)(flag->rd));
}
cJSON *rr_object=cJSON_CreateObject();
uint16_t n_answer_rr=0;
struct dns_resource_record *answer_rr=NULL;
dns_message_answer_resource_record_get0(dns_msg, &answer_rr, &n_answer_rr);
uint16_t n_authority_rr=0;
struct dns_resource_record *authority_rr=NULL;
dns_message_authority_resource_record_get0(dns_msg, &authority_rr, &n_authority_rr);
uint16_t n_additional_rr=0;
struct dns_resource_record *additional_rr=NULL;
dns_message_additional_resource_record_get0(dns_msg, &additional_rr, &n_additional_rr);
int dns_sec=1;
dns_resource_record_json_exporter(rr_object, answer_rr, n_answer_rr, "answer", &dns_sec);
dns_resource_record_json_exporter(rr_object, authority_rr, n_authority_rr, "authority", &dns_sec);
dns_resource_record_json_exporter(rr_object, additional_rr, n_additional_rr, "additional", &dns_sec);
cJSON_AddItemToObject(real_result, "rr", rr_object);
char result_name[16]="";
sprintf(result_name, "DNS_RESULT_%d", plugin_env->result_index++);
char *real_result_str=cJSON_Print(real_result);
dns_real_result_write_file(real_result_str);
free(real_result_str);
commit_test_result_json(real_result, result_name);
}
void *dns_decoder_test_per_session_context_new(struct session *sess, void *plugin_env)
{
return NULL;
}
void dns_decoder_test_per_session_context_free(struct session *sess, void *session_ctx, void *plugin_env)
{
}
extern "C" void *dns_decoder_test_init(struct stellar *st)
{
struct dns_decoder_test_plugin_env *plugin_env=(struct dns_decoder_test_plugin_env *)calloc(1, sizeof(struct dns_decoder_test_plugin_env));
plugin_env->result_index=1;
plugin_env->plugin_id=stellar_session_plugin_register(st, dns_decoder_test_per_session_context_new, dns_decoder_test_per_session_context_free, plugin_env);
if(plugin_env->plugin_id<0)
{
printf("dns_decoder_test_init: stellar_plugin_register failed !!!\n");
exit(-1);
}
plugin_env->topic_id=stellar_session_mq_get_topic_id(st, DNS_MESSAGE_TOPIC);
if(plugin_env->topic_id<0)
{
printf("stellar_session_mq_get_topic_id failed, topic: %s \n", DNS_MESSAGE_TOPIC);
exit(-1);
}
stellar_session_mq_subscribe(st, plugin_env->topic_id, dns_decoder_test_message_cb, plugin_env->plugin_id);
return (void *)plugin_env;
}
extern "C" void dns_decoder_test_exit(void *plugin_env_str)
{
if(plugin_env_str!=NULL)
{
free(plugin_env_str);
}
}
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