#include "includes.h"
#include "../libcli/cldap/cldap.h"
#include "../lib/tsocket/tsocket.h"
+#include "../lib/util/tevent_ntstatus.h"
#include "libads/cldap.h"
+struct cldap_multi_netlogon_state {
+ struct tevent_context *ev;
+ const struct tsocket_address * const *servers;
+ int num_servers;
+ const char *domain;
+ const char *hostname;
+ unsigned ntversion;
+ int min_servers;
+
+ struct cldap_socket **cldap;
+ struct tevent_req **subreqs;
+ int num_sent;
+ int num_received;
+ int num_good_received;
+ struct cldap_netlogon *ios;
+ struct netlogon_samlogon_response **responses;
+};
+
+static void cldap_multi_netlogon_done(struct tevent_req *subreq);
+static void cldap_multi_netlogon_next(struct tevent_req *subreq);
+
+/*
+ * Do a parallel cldap ping to the servers. The first "min_servers"
+ * are fired directly, the remaining ones in 100msec intervals. If
+ * "min_servers" responses came in successfully, we immediately reply,
+ * not waiting for the remaining ones.
+ */
+
+struct tevent_req *cldap_multi_netlogon_send(
+ TALLOC_CTX *mem_ctx, struct tevent_context *ev,
+ const struct tsocket_address * const *servers, int num_servers,
+ const char *domain, const char *hostname, unsigned ntversion,
+ int min_servers)
+{
+ struct tevent_req *req, *subreq;
+ struct cldap_multi_netlogon_state *state;
+ int i;
+
+ req = tevent_req_create(mem_ctx, &state,
+ struct cldap_multi_netlogon_state);
+ if (req == NULL) {
+ return NULL;
+ }
+ state->ev = ev;
+ state->servers = servers;
+ state->num_servers = num_servers;
+ state->domain = domain;
+ state->hostname = hostname;
+ state->ntversion = ntversion;
+ state->min_servers = min_servers;
+
+ if (min_servers > num_servers) {
+ tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
+ return tevent_req_post(req, ev);
+ }
+
+ state->subreqs = talloc_zero_array(state,
+ struct tevent_req *,
+ num_servers);
+ if (tevent_req_nomem(state->subreqs, req)) {
+ return tevent_req_post(req, ev);
+ }
+
+ state->cldap = talloc_zero_array(state,
+ struct cldap_socket *,
+ num_servers);
+ if (tevent_req_nomem(state->cldap, req)) {
+ return tevent_req_post(req, ev);
+ }
+
+ state->responses = talloc_zero_array(state,
+ struct netlogon_samlogon_response *,
+ num_servers);
+ if (tevent_req_nomem(state->responses, req)) {
+ return tevent_req_post(req, ev);
+ }
+
+ state->ios = talloc_zero_array(state->responses,
+ struct cldap_netlogon,
+ num_servers);
+ if (tevent_req_nomem(state->ios, req)) {
+ return tevent_req_post(req, ev);
+ }
+
+ for (i=0; i<num_servers; i++) {
+ NTSTATUS status;
+
+ status = cldap_socket_init(state->cldap,
+ NULL, /* local_addr */
+ state->servers[i],
+ &state->cldap[i]);
+ if (tevent_req_nterror(req, status)) {
+ return tevent_req_post(req, ev);
+ }
+
+ state->ios[i].in.dest_address = NULL;
+ state->ios[i].in.dest_port = 0;
+ state->ios[i].in.realm = domain;
+ state->ios[i].in.host = NULL;
+ state->ios[i].in.user = NULL;
+ state->ios[i].in.domain_guid = NULL;
+ state->ios[i].in.domain_sid = NULL;
+ state->ios[i].in.acct_control = 0;
+ state->ios[i].in.version = ntversion;
+ state->ios[i].in.map_response = false;
+ }
+
+ for (i=0; i<min_servers; i++) {
+ state->subreqs[i] = cldap_netlogon_send(state->subreqs,
+ state->ev,
+ state->cldap[i],
+ &state->ios[i]);
+ if (tevent_req_nomem(state->subreqs[i], req)) {
+ return tevent_req_post(req, ev);
+ }
+ tevent_req_set_callback(
+ state->subreqs[i], cldap_multi_netlogon_done, req);
+ }
+ state->num_sent = min_servers;
+
+ if (state->num_sent < state->num_servers) {
+ /*
+ * After 100 milliseconds fire the next one
+ */
+ subreq = tevent_wakeup_send(state, state->ev,
+ timeval_current_ofs(0, 100000));
+ if (tevent_req_nomem(subreq, req)) {
+ return tevent_req_post(req, ev);
+ }
+ tevent_req_set_callback(subreq, cldap_multi_netlogon_next,
+ req);
+ }
+
+ return req;
+}
+
+static void cldap_multi_netlogon_done(struct tevent_req *subreq)
+{
+ struct tevent_req *req = tevent_req_callback_data(
+ subreq, struct tevent_req);
+ struct cldap_multi_netlogon_state *state = tevent_req_data(
+ req, struct cldap_multi_netlogon_state);
+ NTSTATUS status;
+ struct netlogon_samlogon_response *response;
+ int i;
+
+ for (i=0; i<state->num_sent; i++) {
+ if (state->subreqs[i] == subreq) {
+ break;
+ }
+ }
+ if (i == state->num_sent) {
+ /*
+ * Got a response we did not fire...
+ */
+ tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
+ return;
+ }
+ state->subreqs[i] = NULL;
+
+ response = talloc_zero(state, struct netlogon_samlogon_response);
+ if (tevent_req_nomem(response, req)) {
+ return;
+ }
+
+ status = cldap_netlogon_recv(subreq, response,
+ &state->ios[i]);
+ TALLOC_FREE(subreq);
+ state->num_received += 1;
+
+ if (NT_STATUS_IS_OK(status)) {
+ *response = state->ios[i].out.netlogon;
+ state->responses[i] = talloc_move(state->responses,
+ &response);
+ state->num_good_received += 1;
+ }
+
+ if ((state->num_received == state->num_servers) ||
+ (state->num_good_received >= state->min_servers)) {
+ tevent_req_done(req);
+ return;
+ }
+}
+
+static void cldap_multi_netlogon_next(struct tevent_req *subreq)
+{
+ struct tevent_req *req = tevent_req_callback_data(
+ subreq, struct tevent_req);
+ struct cldap_multi_netlogon_state *state = tevent_req_data(
+ req, struct cldap_multi_netlogon_state);
+ bool ret;
+
+ ret = tevent_wakeup_recv(subreq);
+ TALLOC_FREE(subreq);
+ if (!ret) {
+ tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
+ return;
+ }
+
+ subreq = cldap_netlogon_send(state->subreqs,
+ state->ev,
+ state->cldap[state->num_sent],
+ &state->ios[state->num_sent]);
+ if (tevent_req_nomem(subreq, req)) {
+ return;
+ }
+ tevent_req_set_callback(subreq, cldap_multi_netlogon_done, req);
+ state->subreqs[state->num_sent] = subreq;
+ state->num_sent += 1;
+
+ if (state->num_sent < state->num_servers) {
+ /*
+ * After 100 milliseconds fire the next one
+ */
+ subreq = tevent_wakeup_send(state, state->ev,
+ timeval_current_ofs(0, 100000));
+ if (tevent_req_nomem(subreq, req)) {
+ return;
+ }
+ tevent_req_set_callback(subreq, cldap_multi_netlogon_next,
+ req);
+ }
+}
+
+NTSTATUS cldap_multi_netlogon_recv(
+ struct tevent_req *req, TALLOC_CTX *mem_ctx,
+ struct netlogon_samlogon_response ***responses)
+{
+ struct cldap_multi_netlogon_state *state = tevent_req_data(
+ req, struct cldap_multi_netlogon_state);
+ NTSTATUS status;
+
+ if (tevent_req_is_nterror(req, &status) &&
+ !NT_STATUS_EQUAL(status, NT_STATUS_IO_TIMEOUT)) {
+ return status;
+ }
+ /*
+ * If we timeout, give back what we have so far
+ */
+ *responses = talloc_move(mem_ctx, &state->responses);
+ return NT_STATUS_OK;
+}
+
+NTSTATUS cldap_multi_netlogon(
+ TALLOC_CTX *mem_ctx,
+ const struct tsocket_address * const *servers,
+ int num_servers,
+ const char *domain, const char *hostname, unsigned ntversion,
+ int min_servers, struct timeval timeout,
+ struct netlogon_samlogon_response ***responses)
+{
+ struct tevent_context *ev;
+ struct tevent_req *req;
+ NTSTATUS status = NT_STATUS_NO_MEMORY;
+
+ ev = tevent_context_init(talloc_tos());
+ if (ev == NULL) {
+ goto fail;
+ }
+ req = cldap_multi_netlogon_send(
+ ev, ev, servers, num_servers, domain, hostname, ntversion,
+ min_servers);
+ if (req == NULL) {
+ goto fail;
+ }
+ if (!tevent_req_set_endtime(req, ev, timeout)) {
+ goto fail;
+ }
+ if (!tevent_req_poll_ntstatus(req, ev, &status)) {
+ goto fail;
+ }
+ status = cldap_multi_netlogon_recv(req, mem_ctx, responses);
+fail:
+ TALLOC_FREE(ev);
+ return status;
+}
+
/*******************************************************************
do a cldap netlogon query. Always 389/udp
*******************************************************************/
uint32_t nt_version,
struct netlogon_samlogon_response **_reply)
{
- struct cldap_socket *cldap;
- struct cldap_netlogon io;
- struct netlogon_samlogon_response *reply;
NTSTATUS status;
struct sockaddr_storage ss;
char addrstr[INET6_ADDRSTRLEN];
const char *dest_str;
- int ret;
struct tsocket_address *dest_addr;
+ const struct tsocket_address * const *dest_addrs;
+ struct netlogon_samlogon_response **responses = NULL;
+ int ret;
if (!interpret_string_addr_prefer_ipv4(&ss, server, 0)) {
DEBUG(2,("Failed to resolve[%s] into an address for cldap\n",
return false;
}
- /*
- * as we use a connected udp socket
- */
- status = cldap_socket_init(mem_ctx, NULL, dest_addr, &cldap);
- TALLOC_FREE(dest_addr);
+ dest_addrs = (const struct tsocket_address * const *)&dest_addr;
+
+ status = cldap_multi_netlogon(talloc_tos(),
+ dest_addrs, 1,
+ realm, NULL,
+ nt_version, 1,
+ timeval_current_ofs(MAX(3,lp_ldap_timeout()/2), 0),
+ &responses);
if (!NT_STATUS_IS_OK(status)) {
- DEBUG(2,("Failed to create cldap socket to %s: %s\n",
- dest_str, nt_errstr(status)));
+ DEBUG(2, ("ads_cldap_netlogon: cldap_multi_netlogon "
+ "failed: %s\n", nt_errstr(status)));
return false;
}
-
- reply = talloc(cldap, struct netlogon_samlogon_response);
- if (!reply) {
- goto failed;
- }
-
- /*
- * as we use a connected socket, so we don't need to specify the
- * destination
- */
- io.in.dest_address = NULL;
- io.in.dest_port = 0;
- io.in.realm = realm;
- io.in.host = NULL;
- io.in.user = NULL;
- io.in.domain_guid = NULL;
- io.in.domain_sid = NULL;
- io.in.acct_control = 0;
- io.in.version = nt_version;
- io.in.map_response = false;
-
- status = cldap_netlogon(cldap, reply, &io);
- if (!NT_STATUS_IS_OK(status)) {
- DEBUG(2,("cldap_netlogon() failed: %s\n", nt_errstr(status)));
- goto failed;
+ if (responses[0] == NULL) {
+ DEBUG(2, ("ads_cldap_netlogon: did not get a reply\n"));
+ TALLOC_FREE(responses);
+ return false;
}
+ *_reply = talloc_move(mem_ctx, &responses[0]);
- *reply = io.out.netlogon;
- *_reply = talloc_move(mem_ctx, &reply);
- TALLOC_FREE(cldap);
return true;
-failed:
- TALLOC_FREE(cldap);
- return false;
}
/*******************************************************************
git.samba.org / metze / samba / wip.git / commitdiff