time_t timeout; /**< When this request times out. */
struct irc_in_addr addr; /**< Address for this request. */
char *name; /**< Hostname for this request. */
- struct DNSQuery query; /**< Query callback for this request. */
+ dns_callback_f callback; /**< Callback function on completion. */
+ void *callback_ctx; /**< Context pointer for callback. */
};
/** Base of request list. */
static struct dlink request_list;
static void rem_request(struct reslist *request);
-static struct reslist *make_request(const struct DNSQuery *query);
-static void do_query_name(const struct DNSQuery *query,
+static struct reslist *make_request(dns_callback_f callback, void *ctx);
+static void do_query_name(dns_callback_f callback, void *ctx,
const char* name, struct reslist *request, int);
-static void do_query_number(const struct DNSQuery *query,
+static void do_query_number(dns_callback_f callback, void *ctx,
const struct irc_in_addr *,
struct reslist *request);
static void query_name(const char *name, int query_class, int query_type,
static void resend_query(struct reslist *request);
static int proc_answer(struct reslist *request, HEADER *header, char *, char *);
static struct reslist *find_id(int id);
-static struct DNSReply *make_dnsreply(struct reslist *request);
static void res_readreply(struct Event *ev);
static void timeout_resolver(struct Event *notused);
* @return Newly allocated and linked-in reslist.
*/
static struct reslist *
-make_request(const struct DNSQuery* query)
+make_request(dns_callback_f callback, void *ctx)
{
struct reslist *request;
request->resend = 1;
request->timeout = feature_int(FEAT_IRCD_RES_TIMEOUT);
memset(&request->addr, 0, sizeof(request->addr));
- memcpy(&request->query, query, sizeof(request->query));
+ request->callback = callback;
+ request->callback_ctx = ctx;
add_dlink(&request->node, &request_list);
return(request);
if (--request->retries <= 0)
{
Debug((DEBUG_DNS, "Request %p out of retries; destroying", request));
- (*request->query.callback)(request->query.vptr, 0);
+ (*request->callback)(request->callback_ctx, NULL, NULL);
rem_request(request);
continue;
}
{
next_ptr = ptr->next;
request = (struct reslist*)ptr;
- if (vptr == request->query.vptr) {
+ if (vptr == request->callback_ctx) {
Debug((DEBUG_DNS, "Removing request %p with vptr %p", request, vptr));
rem_request(request);
}
* @param[in] query Callback information.
*/
void
-gethost_byname(const char *name, const struct DNSQuery *query)
+gethost_byname(const char *name, dns_callback_f callback, void *ctx)
{
- do_query_name(query, name, NULL, T_AAAA);
+ do_query_name(callback, ctx, name, NULL, T_AAAA);
}
/** Try to look up hostname for an address.
* @param[in] query Callback information.
*/
void
-gethost_byaddr(const struct irc_in_addr *addr, const struct DNSQuery *query)
+gethost_byaddr(const struct irc_in_addr *addr, dns_callback_f callback, void *ctx)
{
- do_query_number(query, addr, NULL);
+ do_query_number(callback, ctx, addr, NULL);
}
/** Send a query to look up the address for a name.
* @param[in] type Preferred request type.
*/
static void
-do_query_name(const struct DNSQuery *query, const char *name,
+do_query_name(dns_callback_f callback, void *ctx, const char *name,
struct reslist *request, int type)
{
char host_name[HOSTLEN + 1];
if (request == NULL)
{
- request = make_request(query);
+ request = make_request(callback, ctx);
DupString(request->name, host_name);
#ifdef IPV6
if (type != T_A)
* @param[in] request DNS lookup structure (may be NULL).
*/
static void
-do_query_number(const struct DNSQuery *query, const struct irc_in_addr *addr,
+do_query_number(dns_callback_f callback, void *ctx, const struct irc_in_addr *addr,
struct reslist *request)
{
char ipbuf[128];
}
if (request == NULL)
{
- request = make_request(query);
+ request = make_request(callback, ctx);
request->state= REQ_PTR;
request->type = T_PTR;
memcpy(&request->addr, addr, sizeof(request->addr));
switch(request->type)
{
case T_PTR:
- do_query_number(NULL, &request->addr, request);
+ do_query_number(NULL, NULL, &request->addr, request);
break;
case T_A:
- do_query_name(NULL, request->name, request, request->type);
+ do_query_name(NULL, NULL, request->name, request, request->type);
break;
case T_AAAA:
/* didn't work, try A */
if (request->state == REQ_AAAA)
- do_query_name(NULL, request->name, request, T_A);
+ do_query_name(NULL, NULL, request->name, request, T_A);
default:
break;
}
char buf[sizeof(HEADER) + MAXPACKET];
HEADER *header;
struct reslist *request = NULL;
- struct DNSReply *reply = NULL;
unsigned int rc;
int answer_count;
* send any more (no retries granted).
*/
Debug((DEBUG_DNS, "Request %p has bad response (state %d type %d rcode %d)", request, request->state, request->type, header->rcode));
- (*request->query.callback)(request->query.vptr, 0);
+ (*request->callback)(request->callback_ctx, NULL, NULL);
rem_request(request);
}
}
* don't bother trying again, the client address doesn't resolve
*/
Debug((DEBUG_DNS, "Request %p PTR had empty name", request));
- (*request->query.callback)(request->query.vptr, reply);
+ (*request->callback)(request->callback_ctx, NULL, NULL);
rem_request(request);
return;
}
*/
#ifdef IPV6
if (!irc_in_addr_is_ipv4(&request->addr))
- do_query_name(&request->query, request->name, NULL, T_AAAA);
+ do_query_name(request->callback, request->callback_ctx, request->name, NULL, T_AAAA);
else
#endif
- do_query_name(&request->query, request->name, NULL, T_A);
+ do_query_name(request->callback, request->callback_ctx, request->name, NULL, T_A);
Debug((DEBUG_DNS, "Request %p switching to forward resolution", request));
rem_request(request);
}
/*
* got a name and address response, client resolved
*/
- reply = make_dnsreply(request);
- (*request->query.callback)(request->query.vptr, (reply) ? reply : 0);
+ (*request->callback)(request->callback_ctx, &request->addr, request->name);
Debug((DEBUG_DNS, "Request %p got forward resolution", request));
rem_request(request);
}
}
}
-/** Build a DNSReply for a completed request.
- * @param[in] request Completed DNS request.
- * @return Newly allocated DNSReply containing host name and address.
- */
-static struct DNSReply *
-make_dnsreply(struct reslist *request)
-{
- struct DNSReply *cp;
- assert(request != 0);
-
- cp = (struct DNSReply *)MyMalloc(sizeof(struct DNSReply));
-
- DupString(cp->h_name, request->name);
- memcpy(&cp->addr, &request->addr, sizeof(cp->addr));
- return(cp);
-}
-
/** Statistics callback to list DNS servers.
* @param[in] source_p Client requesting statistics.
* @param[in] sd Stats descriptor for request (ignored).
projects / ircu2.10.12-pk.git / blobdiff