#include <winsock2.h>
#elif defined HAVE_SYS_SELECT_H
#include <sys/select.h>
+#include <netdb.h>
+#include <arpa/inet.h>
#endif
+#include "compat/inet.h"
+
struct dnsengine_cares_socket {
struct _IOSocket *iosock;
int want_read : 1;
int want_write : 1;
};
+struct dnsengine_cares_query {
+ int query_count;
+ int query_successful;
+ struct _IODNSQuery *iodns;
+};
+
static IOTIMER_CALLBACK(dnsengine_cares_timer_callback);
static ares_channel dnsengine_cares_channel;
// initialize cares
if((res = ares_init(&dnsengine_cares_channel)) != ARES_SUCCESS) {
iolog_trigger(IOLOG_ERROR, "Failed to initialize c-ares in %s:%d", __FILE__, __LINE__);
- return 0;
- }
- return 0; /* backend not completed */
+ return 0;
+ }
+ return 1;
}
static void dnsengine_cares_update_sockets() {
//set up iosock
iosock->socket_flags |= IOSOCKETFLAG_PARENT_DNSENGINE | IOSOCKETFLAG_OVERRIDE_WANT_RW;
iosock->fd = ares_socks[i];
+ dnsengine_cares_sockets[sockid].iosock = iosock;
dnsengine_cares_sockets[sockid].want_read = 0;
dnsengine_cares_sockets[sockid].want_write = 0;
}
+static void dnsengine_cares_callback(void *arg, int status, int timeouts, struct hostent *host) {
+ struct dnsengine_cares_query *query = arg;
+ struct _IODNSQuery *iodns = query->iodns;
+ query->query_count--;
+ if(iodns) {
+ if(!(iodns->flags & IODNSFLAG_RUNNING)) {
+ // query stopped
+ query->iodns = NULL;
+ iodns = NULL;
+ iodns_free_result(iodns->result);
+ _free_dnsquery(iodns);
+ }
+ if(iodns && status == ARES_SUCCESS) {
+ if((iodns->type & IODNS_FORWARD)) {
+ char **h_addr;
+ for(h_addr = host->h_addr_list; *h_addr; h_addr++) {
+ struct IODNSResult *dnsresult = malloc(sizeof(*dnsresult));
+ if(!dnsresult) {
+ iolog_trigger(IOLOG_ERROR, "Failed to allocate memory for IODNSResult in %s:%d", __FILE__, __LINE__);
+ goto dnsengine_cares_callback_finally;
+ }
+
+ int sockaddrlen;
+ if(host->h_addrtype == AF_INET) {
+ dnsresult->type = IODNS_RECORD_A;
+ sockaddrlen = sizeof(struct sockaddr_in);
+ } else {
+ dnsresult->type = IODNS_RECORD_AAAA;
+ sockaddrlen = sizeof(struct sockaddr_in6);
+ }
+ dnsresult->result.addr.addresslen = sockaddrlen;
+ dnsresult->result.addr.address = malloc(sockaddrlen);
+ if(!dnsresult->result.addr.address) {
+ iolog_trigger(IOLOG_ERROR, "Failed to allocate memory for sockaddr in %s:%d", __FILE__, __LINE__);
+ goto dnsengine_cares_callback_finally;
+ }
+ void *target = (host->h_addrtype == AF_INET ? ((void *) &((struct sockaddr_in *)dnsresult->result.addr.address)->sin_addr) : ((void *) &((struct sockaddr_in6 *)dnsresult->result.addr.address)->sin6_addr));
+ memcpy(target, *h_addr, host->h_length);
+
+ dnsresult->result.addr.address->sa_family = host->h_addrtype;
+ if(host->h_addrtype == AF_INET) {
+ char str[INET_ADDRSTRLEN];
+ inet_ntop( AF_INET, &((struct sockaddr_in *)dnsresult->result.addr.address)->sin_addr, str, INET_ADDRSTRLEN );
+ iolog_trigger(IOLOG_DEBUG, "Resolved %s to (A): %s", iodns->request.host, str);
+ } else {
+ char str[INET6_ADDRSTRLEN];
+ inet_ntop( AF_INET6, &((struct sockaddr_in6 *)dnsresult->result.addr.address)->sin6_addr, str, INET6_ADDRSTRLEN );
+ iolog_trigger(IOLOG_DEBUG, "Resolved %s to (AAAA): %s", iodns->request.host, str);
+ }
+
+ dnsresult->next = iodns->result;
+ iodns->result = dnsresult;
+ }
+
+ } else if((iodns->type & IODNS_REVERSE)) {
+ struct IODNSResult *dnsresult = malloc(sizeof(*dnsresult));
+ if(!dnsresult) {
+ iolog_trigger(IOLOG_ERROR, "Failed to allocate memory for IODNSResult in %s:%d", __FILE__, __LINE__);
+ goto dnsengine_cares_callback_finally;
+ }
+
+ dnsresult->type = IODNS_RECORD_PTR;
+ dnsresult->result.host = strdup(host->h_name);
+ if(!dnsresult->result.host) {
+ iolog_trigger(IOLOG_ERROR, "Failed to duplicate h_name string for IODNSResult in %s:%d", __FILE__, __LINE__);
+ goto dnsengine_cares_callback_finally;
+ }
+
+ dnsresult->next = iodns->result;
+ iodns->result = dnsresult;
+ }
+
+ query->query_successful++;
+ }
+ }
+ dnsengine_cares_callback_finally:
+ if(query->query_count <= 0) {
+ if(iodns) {
+ iodns->flags &= ~(IODNSFLAG_PROCESSING | IODNSFLAG_RUNNING);
+ iodns_event_callback(iodns, (query->query_successful ? IODNSEVENT_SUCCESS : IODNSEVENT_FAILED));
+ }
+ free(query);
+ }
+}
static void dnsengine_cares_add(struct _IODNSQuery *iodns) {
- /* TODO */
+ struct dnsengine_cares_query *query = malloc(sizeof(*query));
+ if(!query) {
+ iolog_trigger(IOLOG_ERROR, "Failed to allocate memory for dnsengine_cares_query in %s:%d", __FILE__, __LINE__);
+ iodns_event_callback(iodns, IODNSEVENT_FAILED);
+ return;
+ }
+ iodns->query = query;
+ query->query_count = 0;
+ query->query_successful = 0;
+ query->iodns = iodns;
+ iodns->flags |= IODNSFLAG_PROCESSING;
+ if((iodns->type & IODNS_FORWARD)) {
+ if((iodns->type & IODNS_RECORD_A)) {
+ query->query_count++;
+ ares_gethostbyname(dnsengine_cares_channel, iodns->request.host, AF_INET, dnsengine_cares_callback, query);
+ }
+ if((iodns->type & IODNS_RECORD_AAAA)) {
+ query->query_count++;
+ ares_gethostbyname(dnsengine_cares_channel, iodns->request.host, AF_INET6, dnsengine_cares_callback, query);
+ }
+ } else if((iodns->type & IODNS_REVERSE)) {
+ query->query_count++;
+ struct sockaddr *addr = iodns->request.addr.address;
+ if(addr->sa_family == AF_INET) {
+ struct sockaddr_in *addr4 = (struct sockaddr_in *) iodns->request.addr.address;
+ ares_gethostbyaddr(dnsengine_cares_channel, &addr4->sin_addr, sizeof(addr4->sin_addr), addr->sa_family, dnsengine_cares_callback, query);
+ } else {
+ struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *)iodns->request.addr.address;
+ ares_gethostbyaddr(dnsengine_cares_channel, &addr6->sin6_addr, sizeof(addr6->sin6_addr), addr->sa_family, dnsengine_cares_callback, query);
+ }
+ }
+ dnsengine_cares_update_timeout();
+ dnsengine_cares_update_sockets();
}
static void dnsengine_cares_remove(struct _IODNSQuery *iodns) {
- /* TODO */
+ /* empty */
}
static void dnsengine_cares_loop() {
- /* empty */
+ /* empty */
}
struct IODNSEngine dnsengine_cares = {
- .name = "c-ares",
- .init = dnsengine_cares_init,
+ .name = "c-ares",
+ .init = dnsengine_cares_init,
.stop = dnsengine_cares_stop,
- .add = dnsengine_cares_add,
- .remove = dnsengine_cares_remove,
- .loop = dnsengine_cares_loop,
+ .add = dnsengine_cares_add,
+ .remove = dnsengine_cares_remove,
+ .loop = dnsengine_cares_loop,
.socket_callback = dnsengine_cares_socket_callback,
};
#else
struct IODNSEngine dnsengine_cares = {
- .name = "c-ares",
- .init = NULL,
+ .name = "c-ares",
+ .init = NULL,
.stop = NULL,
- .add = NULL,
- .remove = NULL,
- .loop = NULL,
+ .add = NULL,
+ .remove = NULL,
+ .loop = NULL,
.socket_callback = NULL,
};
projects / NextIRCd.git / blobdiff