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#include <string>
#include <stdio.h>
#include <signal.h>
#include <arpa/inet.h>
#include "workflow/WFDnsServer.h"
#include "workflow/WFFacilities.h"
void process(WFDnsTask *task)
{
protocol::DnsRequest *req = task->get_req();
protocol::DnsResponse *resp = task->get_resp();
std::string name = req->get_question_name();
int qtype = req->get_question_type();
int qclass = req->get_question_class();
int opcode = req->get_opcode();
printf("name:%s type:%s class:%s\n",
name.c_str(), dns_type2str(qtype), dns_class2str(qclass));
if (opcode != 0)
{
resp->set_rcode(DNS_RCODE_NOT_IMPLEMENTED);
return;
}
resp->set_rcode(DNS_RCODE_NO_ERROR);
resp->set_aa(1);
if (qtype == DNS_TYPE_A)
{
std::string cname = "cname.test";
resp->add_cname_record(DNS_ANSWER_SECTION,
name.c_str(), DNS_CLASS_IN, 999, cname.c_str());
struct in_addr addr;
inet_pton(AF_INET, "192.168.0.1", (void *)&addr);
resp->add_a_record(DNS_ANSWER_SECTION,
cname.c_str(), DNS_CLASS_IN, 600, &addr);
inet_pton(AF_INET, "192.168.0.2", (void *)&addr);
resp->add_a_record(DNS_ANSWER_SECTION,
cname.c_str(), DNS_CLASS_IN, 600, &addr);
}
else if (qtype == DNS_TYPE_AAAA)
{
struct in6_addr addr;
inet_pton(AF_INET6, "1234:5678:9abc:def0::", (void *)&addr);
resp->add_aaaa_record(DNS_ANSWER_SECTION,
name.c_str(), DNS_CLASS_IN, 600, &addr);
}
else if (qtype == DNS_TYPE_SOA)
{
const char *mname = "mname.test";
const char *rname = "rname.test";
resp->add_soa_record(DNS_ANSWER_SECTION, name.c_str(), DNS_CLASS_IN,
60, mname, rname, 123, 86400, 3600, 2592000, 7200);
}
else if (qtype == DNS_TYPE_TXT)
{
const char *raw_txt_data = "\x0dmy dns server\x0fyour dns server";
uint16_t data_len = 30;
resp->add_raw_record(DNS_ANSWER_SECTION, name.c_str(), DNS_TYPE_TXT,
DNS_CLASS_IN, 1200, raw_txt_data, data_len);
}
else
{
resp->set_rcode(DNS_RCODE_NOT_IMPLEMENTED);
}
}
static WFFacilities::WaitGroup wait_group(1);
void sig_handler(int signo)
{
wait_group.done();
}
int main(int argc, char *argv[])
{
unsigned short port;
if (argc != 2)
{
fprintf(stderr, "USAGE: %s <port>\n", argv[0]);
exit(1);
}
signal(SIGINT, sig_handler);
WFDnsServer server(process);
port = atoi(argv[1]);
if (server.start(port) == 0)
{
wait_group.wait();
server.stop();
}
else
{
perror("Cannot start server");
}
return 0;
}
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