lokinet/llarp/dnsd.hpp

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#ifndef LIBLLARP_DNSD_HPP
#define LIBLLARP_DNSD_HPP
#include <llarp/ev.h> // for sockaadr
#include <string>
#include "dns.hpp" // question and dnsc
#include "dnsc.hpp"
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struct dnsd_context;
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typedef ssize_t (*sendto_dns_hook_func)(void *sock, const struct sockaddr *from,
const void *buffer, size_t length);
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struct dnsd_question_request
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{
/// sock type
void *user;
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// raw or llarp subsystem
bool llarp;
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/// request id
int id;
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/// question being asked
dns_msg_question question;
// request source socket
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struct sockaddr *from;
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sendto_dns_hook_func hook; // sendto hook tbh
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// maybe a reference to dnsd_context incase of multiple
dnsd_context *context; // or you can access it via user (udp)
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};
// we could have passed in the source sockaddr in case you wanted to
// handle the response yourself
typedef sockaddr *(*intercept_query_hook)(std::string name);
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struct dnsd_context
{
/// DNS daemon socket to listen on
struct llarp_udp_io udp;
dnsc_context client;
/// custom data for intercept query hook
void *user;
/// hook function for intercepting dns requests
intercept_query_hook intercept;
};
void
llarp_handle_dnsd_recvfrom(struct llarp_udp_io *udp,
const struct sockaddr *paddr, const void *buf,
ssize_t sz);
/// initialize dns subsystem and bind socket
/// returns true on bind success otherwise returns false
bool
llarp_dnsd_init(struct dnsd_context *dnsd, struct llarp_ev_loop *netloop,
const char *dnsd_ifname, uint16_t dnsd_port,
const char *dnsc_hostname, uint16_t dnsc_port);
bool
llarp_dnsd_stop(struct dnsd_context *dnsd);
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#endif