struct hostent *hostent)
{
AsyncIO *IO = data;
- IO->DNSStatus = status;
+#ifdef DEBUG_CARES
+ EV_syslog(LOG_DEBUG, "C-ARES: %s\n", __FUNCTION__);
+#endif
+ ev_timer_stop (event_base, &IO->dns_timeout);
+
+ IO->DNSQuery->DNSStatus = status;
if (status != ARES_SUCCESS) {
-// ResolveError(*cb, status);
+ StrBufPlain(IO->ErrMsg, ares_strerror(status), -1);
return;
}
- IO->Data = hostent;
+ IO->DNSQuery->Data = hostent;
/// TODO: howto free this??
}
static void ParseAnswerA(AsyncIO *IO, unsigned char* abuf, int alen)
{
struct hostent* host;
+#ifdef DEBUG_CARES
+ EV_syslog(LOG_DEBUG, "C-ARES: %s\n", __FUNCTION__);
+#endif
- if (IO->VParsedDNSReply != NULL)
- IO->DNSReplyFree(IO->VParsedDNSReply);
- IO->VParsedDNSReply = NULL;
+ if (IO->DNSQuery->VParsedDNSReply != NULL)
+ IO->DNSQuery->DNSReplyFree(IO->DNSQuery->VParsedDNSReply);
+ IO->DNSQuery->VParsedDNSReply = NULL;
- IO->DNSStatus = ares_parse_a_reply(abuf, alen, &host, NULL, NULL);
- if (IO->DNSStatus != ARES_SUCCESS) {
-// ResolveError(arg->js_cb, status);
+ IO->DNSQuery->DNSStatus = ares_parse_a_reply(abuf, alen, &host, NULL, NULL);
+ if (IO->DNSQuery->DNSStatus != ARES_SUCCESS) {
+ StrBufPlain(IO->ErrMsg, ares_strerror(IO->DNSQuery->DNSStatus), -1);
return;
}
- IO->VParsedDNSReply = host;
- IO->DNSReplyFree = (FreeDNSReply) ares_free_hostent;
+ IO->DNSQuery->VParsedDNSReply = host;
+ IO->DNSQuery->DNSReplyFree = (FreeDNSReply) ares_free_hostent;
}
static void ParseAnswerAAAA(AsyncIO *IO, unsigned char* abuf, int alen)
{
struct hostent* host;
+#ifdef DEBUG_CARES
+ EV_syslog(LOG_DEBUG, "C-ARES: %s\n", __FUNCTION__);
+#endif
- if (IO->VParsedDNSReply != NULL)
- IO->DNSReplyFree(IO->VParsedDNSReply);
- IO->VParsedDNSReply = NULL;
+ if (IO->DNSQuery->VParsedDNSReply != NULL)
+ IO->DNSQuery->DNSReplyFree(IO->DNSQuery->VParsedDNSReply);
+ IO->DNSQuery->VParsedDNSReply = NULL;
- IO->DNSStatus = ares_parse_aaaa_reply(abuf, alen, &host, NULL, NULL);
- if (IO->DNSStatus != ARES_SUCCESS) {
-// ResolveError(arg->js_cb, status);
+ IO->DNSQuery->DNSStatus = ares_parse_aaaa_reply(abuf, alen, &host, NULL, NULL);
+ if (IO->DNSQuery->DNSStatus != ARES_SUCCESS) {
+ StrBufPlain(IO->ErrMsg, ares_strerror(IO->DNSQuery->DNSStatus), -1);
return;
}
- IO->VParsedDNSReply = host;
- IO->DNSReplyFree = (FreeDNSReply) ares_free_hostent;
+ IO->DNSQuery->VParsedDNSReply = host;
+ IO->DNSQuery->DNSReplyFree = (FreeDNSReply) ares_free_hostent;
}
{
struct hostent* host;
- if (IO->VParsedDNSReply != NULL)
- IO->DNSReplyFree(IO->VParsedDNSReply);
- IO->VParsedDNSReply = NULL;
+#ifdef DEBUG_CARES
+ EV_syslog(LOG_DEBUG, "C-ARES: %s\n", __FUNCTION__);
+#endif
+
+ if (IO->DNSQuery->VParsedDNSReply != NULL)
+ IO->DNSQuery->DNSReplyFree(IO->DNSQuery->VParsedDNSReply);
+ IO->DNSQuery->VParsedDNSReply = NULL;
- IO->DNSStatus = ares_parse_a_reply(abuf, alen, &host, NULL, NULL);
- if (IO->DNSStatus != ARES_SUCCESS) {
-// ResolveError(arg->js_cb, status);
+ IO->DNSQuery->DNSStatus = ares_parse_a_reply(abuf, alen, &host, NULL, NULL);
+ if (IO->DNSQuery->DNSStatus != ARES_SUCCESS) {
+ StrBufPlain(IO->ErrMsg, ares_strerror(IO->DNSQuery->DNSStatus), -1);
return;
}
// a CNAME lookup always returns a single record but
- IO->VParsedDNSReply = host;
- IO->DNSReplyFree = (FreeDNSReply) ares_free_hostent;
+ IO->DNSQuery->VParsedDNSReply = host;
+ IO->DNSQuery->DNSReplyFree = (FreeDNSReply) ares_free_hostent;
}
static void ParseAnswerMX(AsyncIO *IO, unsigned char* abuf, int alen)
{
struct ares_mx_reply *mx_out;
+#ifdef DEBUG_CARES
+ EV_syslog(LOG_DEBUG, "C-ARES: %s\n", __FUNCTION__);
+#endif
- if (IO->VParsedDNSReply != NULL)
- IO->DNSReplyFree(IO->VParsedDNSReply);
- IO->VParsedDNSReply = NULL;
+ if (IO->DNSQuery->VParsedDNSReply != NULL)
+ IO->DNSQuery->DNSReplyFree(IO->DNSQuery->VParsedDNSReply);
+ IO->DNSQuery->VParsedDNSReply = NULL;
- IO->DNSStatus = ares_parse_mx_reply(abuf, alen, &mx_out);
- if (IO->DNSStatus != ARES_SUCCESS) {
-// ResolveError(arg->js_cb, status);
+ IO->DNSQuery->DNSStatus = ares_parse_mx_reply(abuf, alen, &mx_out);
+ if (IO->DNSQuery->DNSStatus != ARES_SUCCESS) {
+ StrBufPlain(IO->ErrMsg, ares_strerror(IO->DNSQuery->DNSStatus), -1);
return;
}
- IO->VParsedDNSReply = mx_out;
- IO->DNSReplyFree = (FreeDNSReply) ares_free_data;
+ IO->DNSQuery->VParsedDNSReply = mx_out;
+ IO->DNSQuery->DNSReplyFree = (FreeDNSReply) ares_free_data;
}
static void ParseAnswerNS(AsyncIO *IO, unsigned char* abuf, int alen)
{
struct hostent* host;
+#ifdef DEBUG_CARES
+ EV_syslog(LOG_DEBUG, "C-ARES: %s\n", __FUNCTION__);
+#endif
- if (IO->VParsedDNSReply != NULL)
- IO->DNSReplyFree(IO->VParsedDNSReply);
- IO->VParsedDNSReply = NULL;
+ if (IO->DNSQuery->VParsedDNSReply != NULL)
+ IO->DNSQuery->DNSReplyFree(IO->DNSQuery->VParsedDNSReply);
+ IO->DNSQuery->VParsedDNSReply = NULL;
- IO->DNSStatus = ares_parse_ns_reply(abuf, alen, &host);
- if (IO->DNSStatus != ARES_SUCCESS) {
-// ResolveError(arg->js_cb, status);
+ IO->DNSQuery->DNSStatus = ares_parse_ns_reply(abuf, alen, &host);
+ if (IO->DNSQuery->DNSStatus != ARES_SUCCESS) {
+ StrBufPlain(IO->ErrMsg, ares_strerror(IO->DNSQuery->DNSStatus), -1);
return;
}
- IO->VParsedDNSReply = host;
- IO->DNSReplyFree = (FreeDNSReply) ares_free_hostent;
+ IO->DNSQuery->VParsedDNSReply = host;
+ IO->DNSQuery->DNSReplyFree = (FreeDNSReply) ares_free_hostent;
}
static void ParseAnswerSRV(AsyncIO *IO, unsigned char* abuf, int alen)
{
struct ares_srv_reply *srv_out;
+#ifdef DEBUG_CARES
+ EV_syslog(LOG_DEBUG, "C-ARES: %s\n", __FUNCTION__);
+#endif
- if (IO->VParsedDNSReply != NULL)
- IO->DNSReplyFree(IO->VParsedDNSReply);
- IO->VParsedDNSReply = NULL;
+ if (IO->DNSQuery->VParsedDNSReply != NULL)
+ IO->DNSQuery->DNSReplyFree(IO->DNSQuery->VParsedDNSReply);
+ IO->DNSQuery->VParsedDNSReply = NULL;
- IO->DNSStatus = ares_parse_srv_reply(abuf, alen, &srv_out);
- if (IO->DNSStatus != ARES_SUCCESS) {
-// ResolveError(arg->js_cb, status);
+ IO->DNSQuery->DNSStatus = ares_parse_srv_reply(abuf, alen, &srv_out);
+ if (IO->DNSQuery->DNSStatus != ARES_SUCCESS) {
+ StrBufPlain(IO->ErrMsg, ares_strerror(IO->DNSQuery->DNSStatus), -1);
return;
}
- IO->VParsedDNSReply = srv_out;
- IO->DNSReplyFree = (FreeDNSReply) ares_free_data;
+ IO->DNSQuery->VParsedDNSReply = srv_out;
+ IO->DNSQuery->DNSReplyFree = (FreeDNSReply) ares_free_data;
}
static void ParseAnswerTXT(AsyncIO *IO, unsigned char* abuf, int alen)
{
struct ares_txt_reply *txt_out;
+#ifdef DEBUG_CARES
+ EV_syslog(LOG_DEBUG, "C-ARES: %s\n", __FUNCTION__);
+#endif
- if (IO->VParsedDNSReply != NULL)
- IO->DNSReplyFree(IO->VParsedDNSReply);
- IO->VParsedDNSReply = NULL;
+ if (IO->DNSQuery->VParsedDNSReply != NULL)
+ IO->DNSQuery->DNSReplyFree(IO->DNSQuery->VParsedDNSReply);
+ IO->DNSQuery->VParsedDNSReply = NULL;
- IO->DNSStatus = ares_parse_txt_reply(abuf, alen, &txt_out);
- if (IO->DNSStatus != ARES_SUCCESS) {
-// ResolveError(arg->js_cb, status);
+ IO->DNSQuery->DNSStatus = ares_parse_txt_reply(abuf, alen, &txt_out);
+ if (IO->DNSQuery->DNSStatus != ARES_SUCCESS) {
+ StrBufPlain(IO->ErrMsg, ares_strerror(IO->DNSQuery->DNSStatus), -1);
return;
}
- IO->VParsedDNSReply = txt_out;
- IO->DNSReplyFree = (FreeDNSReply) ares_free_data;
+ IO->DNSQuery->VParsedDNSReply = txt_out;
+ IO->DNSQuery->DNSReplyFree = (FreeDNSReply) ares_free_data;
}
void QueryCb(void *arg,
int alen)
{
AsyncIO *IO = arg;
+#ifdef DEBUG_CARES
+ EV_syslog(LOG_DEBUG, "C-ARES: %s\n", __FUNCTION__);
+#endif
+ ev_timer_stop (event_base, &IO->dns_timeout);
- IO->DNSStatus = status;
+ IO->DNSQuery->DNSStatus = status;
if (status == ARES_SUCCESS)
- IO->DNS_CB(arg, abuf, alen);
-/// ev_io_stop(event_base, &IO->dns_io_event);
-
- IO->PostDNS(IO);
+ IO->DNSQuery->DNS_CB(arg, abuf, alen);
+ else {
+ EV_syslog(LOG_DEBUG, "C-ARES: Failed by: %s error %s\n",
+ __FUNCTION__,
+ ares_strerror(status));
+ StrBufPlain(IO->ErrMsg, ares_strerror(status), -1);
+ IO->DNSQuery->DNSStatus = status;
+ }
+
+ ev_idle_init(&IO->unwind_stack,
+ IO_postdns_callback);
+ IO->unwind_stack.data = IO;
+ ev_idle_start(event_base, &IO->unwind_stack);
}
-int QueueQuery(ns_type Type, char *name, AsyncIO *IO, IO_CallBack PostDNS)
+void QueryCbDone(AsyncIO *IO)
+{
+#ifdef DEBUG_CARES
+ EV_syslog(LOG_DEBUG, "C-ARES: %s\n", __FUNCTION__);
+#endif
+
+ ev_idle_stop(event_base, &IO->unwind_stack);
+}
+
+
+void InitC_ares_dns(AsyncIO *IO)
{
- int length, family;
- char address_b[sizeof(struct in6_addr)];
int optmask = 0;
+#ifdef DEBUG_CARES
+ EV_syslog(LOG_DEBUG, "C-ARES: %s %p\n", __FUNCTION__, IO->DNSChannel);
+#endif
if (IO->DNSChannel == NULL) {
optmask |= ARES_OPT_SOCK_STATE_CB;
IO->DNSOptions.sock_state_cb_data = IO;
ares_init_options(&IO->DNSChannel, &IO->DNSOptions, optmask);
}
+ IO->DNSQuery->DNSStatus = 0;
+}
+
+static void
+DNS_timeouttrigger_callback(struct ev_loop *loop, ev_timer *watcher, int revents)
+{
+ AsyncIO *IO = watcher->data;
+ struct timeval tv, MaxTV;
+ struct timeval *NextTV;
+
+ memset(&MaxTV, 0, sizeof(MaxTV));
+ memset(&tv, 0, sizeof(tv));
+ MaxTV.tv_sec = 30;
+ NextTV = ares_timeout(IO->DNSChannel, &MaxTV, &tv);
+
+ if ((NextTV->tv_sec != MaxTV.tv_sec) ||
+ (NextTV->tv_usec != MaxTV.tv_usec))
+ {
+ fd_set readers, writers;
+#ifdef DEBUG_CARES
+ EV_syslog(LOG_DEBUG, "C-ARES: %s Timeout!\n", __FUNCTION__);
+#endif
+ FD_ZERO(&readers);
+ FD_ZERO(&writers);
+ ares_fds(IO->DNSChannel, &readers, &writers);
+ ares_process(IO->DNSChannel, &readers, &writers);
+ }
+}
+
+void QueueGetHostByNameDone(void *Ctx,
+ int status,
+ int timeouts,
+ struct hostent *hostent)
+{
+ AsyncIO *IO = (AsyncIO *) Ctx;
+#ifdef DEBUG_CARES
+ EV_syslog(LOG_DEBUG, "C-ARES: %s\n", __FUNCTION__);
+#endif
+
+ IO->DNSQuery->DNSStatus = status;
+ IO->DNSQuery->VParsedDNSReply = hostent;
+ IO->DNSQuery->DNSReplyFree = (FreeDNSReply) ares_free_hostent;
+
+ ev_idle_init(&IO->unwind_stack,
+ IO_postdns_callback);
+ IO->unwind_stack.data = IO;
+ ev_idle_start(event_base, &IO->unwind_stack);
+}
+
+void QueueGetHostByName(AsyncIO *IO, const char *Hostname, DNSQueryParts *QueryParts, IO_CallBack PostDNS)
+{
+#ifdef DEBUG_CARES
+ EV_syslog(LOG_DEBUG, "C-ARES: %s\n", __FUNCTION__);
+ IO->DnsSourcePort = 0;
+#endif
+
+ IO->DNSQuery = QueryParts;
+ IO->DNSQuery->PostDNS = PostDNS;
+
+ InitC_ares_dns(IO);
+
+ ev_timer_init(&IO->dns_timeout, DNS_timeouttrigger_callback, 10, 1);
+ IO->dns_timeout.data = IO;
+ ares_gethostbyname(IO->DNSChannel,
+ Hostname,
+ AF_INET6, /* it falls back to ipv4 in doubt... */
+ QueueGetHostByNameDone,
+ IO);
+ ev_timer_start(event_base, &IO->dns_timeout);
+
+}
+int QueueQuery(ns_type Type, const char *name, AsyncIO *IO, DNSQueryParts *QueryParts, IO_CallBack PostDNS)
+{
+ int length, family;
+ char address_b[sizeof(struct in6_addr)];
+
+#ifdef DEBUG_CARES
+ IO->DnsSourcePort = 0;
+#endif
+
+ IO->DNSQuery = QueryParts;
+ IO->DNSQuery->PostDNS = PostDNS;
+
+ InitC_ares_dns(IO);
+
+ ev_timer_init(&IO->dns_timeout, DNS_timeouttrigger_callback, 10, 1);
+ IO->dns_timeout.data = IO;
- IO->PostDNS = PostDNS;
switch(Type) {
case ns_t_a:
- IO->DNS_CB = ParseAnswerA;
+ IO->DNSQuery->DNS_CB = ParseAnswerA;
break;
case ns_t_aaaa:
- IO->DNS_CB = ParseAnswerAAAA;
+ IO->DNSQuery->DNS_CB = ParseAnswerAAAA;
break;
case ns_t_mx:
- IO->DNS_CB = ParseAnswerMX;
+ IO->DNSQuery->DNS_CB = ParseAnswerMX;
break;
case ns_t_ns:
- IO->DNS_CB = ParseAnswerNS;
+ IO->DNSQuery->DNS_CB = ParseAnswerNS;
break;
case ns_t_txt:
- IO->DNS_CB = ParseAnswerTXT;
+ IO->DNSQuery->DNS_CB = ParseAnswerTXT;
break;
case ns_t_srv:
- IO->DNS_CB = ParseAnswerSRV;
+ IO->DNSQuery->DNS_CB = ParseAnswerSRV;
break;
case ns_t_cname:
- IO->DNS_CB = ParseAnswerCNAME;
+ IO->DNSQuery->DNS_CB = ParseAnswerCNAME;
break;
case ns_t_ptr:
}
ares_gethostbyaddr(IO->DNSChannel, address_b, length, family, HostByAddrCb, IO);
-
+ ev_timer_start(event_base, &IO->dns_timeout);
+#ifdef DEBUG_CARES
+ EV_syslog(LOG_DEBUG, "C-ARES: %s X1\n", __FUNCTION__);
+#endif
return 1;
default:
+#ifdef DEBUG_CARES
+ EV_syslog(LOG_DEBUG, "C-ARES: %sX2\n", __FUNCTION__);
+#endif
return 0;
}
+#ifdef DEBUG_CARES
+ EV_syslog(LOG_DEBUG, "C-ARES: %s\n", __FUNCTION__);
+#endif
ares_query(IO->DNSChannel, name, ns_c_in, Type, QueryCb, IO);
+ ev_timer_start(event_base, &IO->dns_timeout);
return 1;
}
-static void DNS_io_callback(struct ev_loop *loop, ev_io *watcher, int revents)
+
+
+
+
+/*****************************************************************************
+ * libev / c-ares integration *
+ *****************************************************************************/
+static void DNS_send_callback(struct ev_loop *loop, ev_io *watcher, int revents)
{
AsyncIO *IO = watcher->data;
- ares_process_fd(IO->DNSChannel, IO->dns_io_event.fd, 0);
+#ifdef DEBUG_CARES
+ EV_syslog(LOG_DEBUG, "C-ARES: %s\n", __FUNCTION__);
+#endif
+
+ ares_process_fd(IO->DNSChannel, ARES_SOCKET_BAD, IO->dns_send_event.fd);
+}
+static void DNS_recv_callback(struct ev_loop *loop, ev_io *watcher, int revents)
+{
+ AsyncIO *IO = watcher->data;
+
+#ifdef DEBUG_CARES
+ EV_syslog(LOG_DEBUG, "C-ARES: %s\n", __FUNCTION__);
+#endif
+
+ ares_process_fd(IO->DNSChannel, IO->dns_recv_event.fd, ARES_SOCKET_BAD);
}
void SockStateCb(void *data, int sock, int read, int write)
{
- struct timeval tvbuf, maxtv, *ret;
-
- int64_t time = 10;
AsyncIO *IO = data;
-/* already inside of the event queue. */
+/* already inside of the event queue. */
+#ifdef DEBUG_CARES
+{
+ struct sockaddr_in sin = {};
+ socklen_t slen;
+ slen = sizeof(sin);
+ if ((IO->DnsSourcePort == 0) &&
+ (getsockname(sock, &sin, &slen) == 0))
+ {
+ IO->DnsSourcePort = ntohs(sin.sin_port);
+ }
+ EV_syslog(LOG_DEBUG, "C-ARES: %s %d|%d Sock %d port %hu\n",
+ __FUNCTION__,
+ read,
+ write,
+ sock,
+ IO->DnsSourcePort);
+}
+#endif
- if ((read == 0) && (write == 0)) {
-// ev_io_stop(event_base, &IO->dns_io_event);
- } else if (IO->dns_io_event.fd != sock) {
- if (IO->dns_io_event.fd != 0) {
- ev_io_stop(event_base, &IO->dns_io_event);
+ if (read) {
+ if ((IO->dns_recv_event.fd != sock) &&
+ (IO->dns_recv_event.fd != 0)) {
+ ev_io_stop(event_base, &IO->dns_recv_event);
}
- IO->dns_io_event.fd = sock;
- ev_io_init(&IO->dns_io_event, DNS_io_callback, IO->dns_io_event.fd, EV_READ|EV_WRITE);
- IO->dns_io_event.data = IO;
-
- ev_io_start(event_base, &IO->dns_io_event);
-
- maxtv.tv_sec = time/1000;
- maxtv.tv_usec = (time % 1000) * 1000;
-
- ret = ares_timeout(IO->DNSChannel, &maxtv, &tvbuf);
+ IO->dns_recv_event.fd = sock;
+ ev_io_init(&IO->dns_recv_event, DNS_recv_callback, IO->dns_recv_event.fd, EV_READ);
+ IO->dns_recv_event.data = IO;
+ ev_io_start(event_base, &IO->dns_recv_event);
+ }
+ if (write) {
+ if ((IO->dns_send_event.fd != sock) &&
+ (IO->dns_send_event.fd != 0)) {
+ ev_io_stop(event_base, &IO->dns_send_event);
+ }
+ IO->dns_send_event.fd = sock;
+ ev_io_init(&IO->dns_send_event, DNS_send_callback, IO->dns_send_event.fd, EV_WRITE);
+ IO->dns_send_event.data = IO;
+ ev_io_start(event_base, &IO->dns_send_event);
+ }
+ if ((read == 0) && (write == 0)) {
+ ev_io_stop(event_base, &IO->dns_recv_event);
+ ev_io_stop(event_base, &IO->dns_send_event);
}
}
projects / citadel.git / blobdiff