extern struct ev_loop *event_base;
-struct ares_options options;
-ares_channel Channel;
void SockStateCb(void *data, int sock, int read, int write);
-/*
- c-ares beim connect zum nameserver: if (channel->sock_create_cb)
-
- SOCK_STATE_CALLBACK(channel, s, 1, 0); -> void Channel::SockStateCb(void *data, int sock, int read, int write) {
-
-
-
-lesen der antwort:
-#0 node::Channel::QueryCb (arg=0x8579268, status=0x0, timeouts=0x0, abuf=0xbffff0ef "\356|\201\200", alen=0x48) at ../src/node_cares.cc:453
-#1 0x08181884 in qcallback (arg=0x8579278, status=0x857b5a0, timeouts=0x0, abuf=0xbffff0ef "\356|\201\200", alen=0x48) at ../deps/c-ares/ares_query.c:180
-#2 0x0817fbf5 in end_query (channel=<value optimized out>, query=0x85790b0, status=0x1, abuf=0xbffff0ef "\356|\201\200", alen=0x48) at ../deps/c-ares/ares_process.c:1233
-#3 0x08180898 in process_answer (channel=<value optimized out>, abuf=<value optimized out>, alen=<value optimized out>, whichserver=0x0, tcp=0x0, now=0xbffff388) at ../deps/c-ares/ares_process.c:612
-#4 0x08180cf8 in read_udp_packets (channel=<value optimized out>, read_fds=<value optimized out>, read_fd=<value optimized out>, now=0xbffff388) at ../deps/c-ares/ares_process.c:498
-#5 0x08181021 in processfds (channel=0x85a9888, read_fds=<value optimized out>, read_fd=<value optimized out>, write_fds=0x0, write_fd=0xffffffff) at ../deps/c-ares/ares_process.c:153
-
-->
-static void ParseAnswerMX(QueryArg *arg, unsigned char* abuf, int alen) {
- HandleScope scope;
-
-
-
- */
-
-/*
-
-static Local<Array> HostEntToAddresses(struct hostent* hostent) {
- Local<Array> addresses = Array::New();
-
-
- char ip[INET6_ADDRSTRLEN];
- for (int i = 0; hostent->h_addr_list[i]; ++i) {
- inet_ntop(hostent->h_addrtype, hostent->h_addr_list[i], ip, sizeof(ip));
-
- Local<String> address = String::New(ip);
- addresses->Set(Integer::New(i), address);
- }
-
- return addresses;
-}
-
-
-static Local<Array> HostEntToNames(struct hostent* hostent) {
- Local<Array> names = Array::New();
-
- for (int i = 0; hostent->h_aliases[i]; ++i) {
- Local<String> address = String::New(hostent->h_aliases[i]);
- names->Set(Integer::New(i), address);
- }
-
- return names;
-}
-
-static inline const char *ares_errno_string(int errorno) {
-#define ERRNO_CASE(e) case ARES_##e: return #e;
- switch (errorno) {
- ERRNO_CASE(SUCCESS)
- ERRNO_CASE(ENODATA)
- ERRNO_CASE(EFORMERR)
- ERRNO_CASE(ESERVFAIL)
- ERRNO_CASE(ENOTFOUND)
- ERRNO_CASE(ENOTIMP)
- ERRNO_CASE(EREFUSED)
- ERRNO_CASE(EBADQUERY)
- ERRNO_CASE(EBADNAME)
- ERRNO_CASE(EBADFAMILY)
- ERRNO_CASE(EBADRESP)
- ERRNO_CASE(ECONNREFUSED)
- ERRNO_CASE(ETIMEOUT)
- ERRNO_CASE(EOF)
- ERRNO_CASE(EFILE)
- ERRNO_CASE(ENOMEM)
- ERRNO_CASE(EDESTRUCTION)
- ERRNO_CASE(EBADSTR)
- ERRNO_CASE(EBADFLAGS)
- ERRNO_CASE(ENONAME)
- ERRNO_CASE(EBADHINTS)
- ERRNO_CASE(ENOTINITIALIZED)
- ERRNO_CASE(ELOADIPHLPAPI)
- ERRNO_CASE(EADDRGETNETWORKPARAMS)
- ERRNO_CASE(ECANCELLED)
- default:
- assert(0 && "Unhandled c-ares errno");
- return "(UNKNOWN)";
- }
-}
-
-
-static void ResolveError(Persistent<Function> &cb, int status) {
- HandleScope scope;
-
- Local<String> code = String::NewSymbol(ares_errno_string(status));
- Local<String> message = String::NewSymbol(ares_strerror(status));
-
- Local<String> cons1 = String::Concat(code, String::NewSymbol(", "));
- Local<String> cons2 = String::Concat(cons1, message);
-
- Local<Value> e = Exception::Error(cons2);
-
- Local<Object> obj = e->ToObject();
- obj->Set(String::NewSymbol("errno"), Integer::New(status));
-
- TryCatch try_catch;
-
- cb->Call(v8::Context::GetCurrent()->Global(), 1, &e);
-
- if (try_catch.HasCaught()) {
- FatalException(try_catch);
- }
-}
-
-static void HostByNameCb(void *data,
- int status,
- int timeouts,
- struct hostent *hostent) {
- HandleScope scope;
-
- Persistent<Function> *cb = cb_unwrap(data);
-
- if (status != ARES_SUCCESS) {
- ResolveError(*cb, status);
- cb_destroy(cb);
- return;
- }
-
- TryCatch try_catch;
-
- Local<Array> addresses = HostEntToAddresses(hostent);
-
- Local<Value> argv[2] = { Local<Value>::New(Null()), addresses};
-
- (*cb)->Call(v8::Context::GetCurrent()->Global(), 2, argv);
-
- if (try_catch.HasCaught()) {
- FatalException(try_catch);
- }
-
- cb_destroy(cb);
-}
-
-
-
-
-static void cb_call(Persistent<Function> &cb, int argc, Local<Value> *argv) {
- TryCatch try_catch;
-
- cb->Call(v8::Context::GetCurrent()->Global(), argc, argv);
-
- if (try_catch.HasCaught()) {
- FatalException(try_catch);
- }
-}
-
-Handle<Value> Channel::GetHostByAddr(const Arguments& args) {
- HandleScope scope;
- Channel *c = ObjectWrap::Unwrap<Channel>(args.Holder());
- assert(c);
-
- if (!args[0]->IsString()) {
- return ThrowException(Exception::Error(
- String::New("First argument must be a address")));
- }
-
- if (!args[1]->IsInt32()) {
- return ThrowException(Exception::Error(
- String::New("Second argument must be an address family")));
- }
-
- if (!args[2]->IsFunction()) {
- return ThrowException(Exception::Error(
- String::New("Third argument must be a callback")));
- }
-
- int family = args[1]->Int32Value();
- if (family != AF_INET6 && family != AF_INET) {
- return ThrowException(Exception::Error(
- String::New("Unsupported address family")));
- }
-
- String::Utf8Value address_s(args[0]->ToString());
-
- char address_b[sizeof(struct in6_addr)];
- int r = inet_pton(family, *address_s, address_b);
- if (r != 1) {
- return ThrowException(Exception::Error(
- String::New("Invalid network address")));
- }
-
- int length;
- if (family == AF_INET6)
- length = sizeof(struct in6_addr);
- else
- length = sizeof(struct in_addr);
-
- ares_gethostbyaddr(c->channel, address_b, length, family, HostByAddrCb, cb_persist(args[2]));
-
- return Undefined();
-}
-
-
-
-Handle<Value> Channel::GetHostByName(const Arguments& args) {
- HandleScope scope;
- Channel *c = ObjectWrap::Unwrap<Channel>(args.Holder());
- assert(c);
-
- if (!args[0]->IsString()) {
- return ThrowException(Exception::Error(
- String::New("First argument must be a name")));
- }
-
- if (!args[1]->IsInt32()) {
- return ThrowException(Exception::Error(
- String::New("Second argument must be a family")));
- }
-
- if (!args[2]->IsFunction()) {
- return ThrowException(Exception::Error(
- String::New("Third argument must be a callback")));
- }
-
- int family = args[1]->Int32Value();
- if (family != AF_INET6 && family != AF_INET) {
- return ThrowException(Exception::Error(
- String::New("Unsupported address family")));
- }
-
- String::Utf8Value name(args[0]->ToString());
-
- ares_gethostbyname(c->channel, *name, family, HostByNameCb, cb_persist(args[2]));
-
- return Undefined();
-}
-
-*/
-
-
static void HostByAddrCb(void *data,
int status,
IO->DNSReplyFree = (FreeDNSReply) ares_free_data;
}
-
void QueryCb(void *arg,
int status,
int timeouts,
IO->DNSStatus = status;
if (status == ARES_SUCCESS)
IO->DNS_CB(arg, abuf, alen);
- IO->PostDNS(IO);
+ else
+ IO->DNSStatus = status;
+/// ev_io_stop(event_base, &IO->dns_io_event);
+
+ ev_timer_init(&IO->unwind_stack_timeout,
+ IO_postdns_callback, 0.0, 0);
+ IO->unwind_stack_timeout.data = IO;
+ ev_timer_start(event_base, &IO->unwind_stack_timeout);
+ CtdlLogPrintf(CTDL_DEBUG, "C-ARES: %s\n", __FUNCTION__);
+}
+
+void QueryCbDone(AsyncIO *IO)
+{
+ ev_timer_stop(event_base, &IO->unwind_stack_timeout);
}
+
+void InitC_ares_dns(AsyncIO *IO)
+{
+ int optmask = 0;
+ if (IO->DNSChannel == NULL) {
+ optmask |= ARES_OPT_SOCK_STATE_CB;
+ IO->DNSOptions.sock_state_cb = SockStateCb;
+ IO->DNSOptions.sock_state_cb_data = IO;
+ ares_init_options(&IO->DNSChannel, &IO->DNSOptions, optmask);
+ }
+}
int QueueQuery(ns_type Type, char *name, AsyncIO *IO, IO_CallBack PostDNS)
{
int length, family;
char address_b[sizeof(struct in6_addr)];
- int optmask = 0;
-
- optmask |= ARES_OPT_SOCK_STATE_CB;
- IO->DNSOptions.sock_state_cb = SockStateCb;
- IO->DNSOptions.sock_state_cb_data = IO;
- ares_init_options(&IO->DNSChannel, &IO->DNSOptions, optmask);
+ InitC_ares_dns(IO);
IO->PostDNS = PostDNS;
switch(Type) {
case ns_t_a:
return 1;
}
-static void DNS_recv_callback(struct ev_loop *loop, ev_io *watcher, int revents)
+static void DNS_send_callback(struct ev_loop *loop, ev_io *watcher, int revents)
{
+ AsyncIO *IO = watcher->data;
+
+ ares_process_fd(IO->DNSChannel, ARES_SOCKET_BAD, IO->dns_send_event.fd);
}
-
-static void DNS_send_callback(struct ev_loop *loop, ev_io *watcher, int revents)
+static void DNS_recv_callback(struct ev_loop *loop, ev_io *watcher, int revents)
{
+ AsyncIO *IO = watcher->data;
+
+ 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. */
- IO->sock = sock;
- ev_io_init(&IO->recv_event, DNS_recv_callback, IO->sock, EV_READ);
- IO->recv_event.data = IO;
- ev_io_init(&IO->send_event, DNS_send_callback, IO->sock, EV_WRITE);
- IO->send_event.data = IO;
- if (write)
- ev_io_start(event_base, &IO->send_event);
- else
- ev_io_start(event_base, &IO->recv_event);
-
-
- maxtv.tv_sec = time/1000;
- maxtv.tv_usec = (time % 1000) * 1000;
- ret = ares_timeout(IO->DNSChannel, &maxtv, &tvbuf);
+ if (read) {
+ if ((IO->dns_recv_event.fd != sock) &&
+ (IO->dns_recv_event.fd != 0) &&
+ ((IO->active_dns_event & EV_READ) != 0)) {
+ ev_io_stop(event_base, &IO->dns_recv_event);
+ }
+ 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);
+ IO->active_dns_event = IO->active_dns_event | EV_READ;
+ }
+ if (write) {
+ if ((IO->dns_send_event.fd != sock) &&
+ (IO->dns_send_event.fd != 0) &&
+ ((IO->active_dns_event & EV_WRITE) != 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);
+ IO->active_dns_event = IO->active_dns_event | EV_WRITE;
+ }
+/*
+ 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);
+ }
+*/
+ if ((read == 0) && (write == 0)) {
+ if ((IO->active_dns_event & EV_READ) != 0)
+ ev_io_stop(event_base, &IO->dns_recv_event);
+ if ((IO->active_dns_event & EV_WRITE) != 0)
+ ev_io_stop(event_base, &IO->dns_send_event);
+ IO->active_dns_event = 0;
+ }
}
CTDL_MODULE_INIT(c_ares_client)
{
if (!threading)
{
- int optmask = 0;
-
-
int r = ares_library_init(ARES_LIB_INIT_ALL);
if (0 != r) {
// TODO
// ThrowException(Exception::Error(String::New(ares_strerror(r))));
//// assert(r == 0);
}
-
- optmask |= ARES_OPT_SOCK_STATE_CB;
- memset(&options, 0, sizeof(struct ares_options));
- options.sock_state_cb = SockStateCb;
-
- ares_init_options(&Channel, &options, optmask);
-
}
return "c-ares";
}
projects / citadel.git / blobdiff