KDC Server startup
- Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005
+ Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005-2008
Copyright (C) Andrew Tridgell 2005
+ Copyright (C) Stefan Metzmacher 2005
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
#include "smbd/service_task.h"
+#include "smbd/service.h"
+#include "smbd/service_stream.h"
+#include "smbd/process_model.h"
#include "lib/events/events.h"
#include "lib/socket/socket.h"
+#include "system/network.h"
+#include "lib/util/dlinklist.h"
+#include "lib/messaging/irpc.h"
+#include "lib/stream/packet.h"
+#include "librpc/gen_ndr/samr.h"
+#include "librpc/gen_ndr/ndr_irpc.h"
+#include "librpc/gen_ndr/ndr_krb5pac.h"
+#include "lib/socket/netif.h"
+#include "param/param.h"
#include "kdc/kdc.h"
+#include "librpc/gen_ndr/ndr_misc.h"
+
+
+/* Disgusting hack to get a mem_ctx and lp_ctx into the hdb plugin, when
+ * used as a keytab */
+TALLOC_CTX *kdc_mem_ctx;
+struct loadparm_context *kdc_lp_ctx;
+
+/* hold all the info needed to send a reply */
+struct kdc_reply {
+ struct kdc_reply *next, *prev;
+ struct socket_address *dest;
+ DATA_BLOB packet;
+};
+
+typedef bool (*kdc_process_fn_t)(struct kdc_server *kdc,
+ TALLOC_CTX *mem_ctx,
+ DATA_BLOB *input,
+ DATA_BLOB *reply,
+ struct socket_address *peer_addr,
+ struct socket_address *my_addr,
+ int datagram);
+
+/* hold information about one kdc socket */
+struct kdc_socket {
+ struct socket_context *sock;
+ struct kdc_server *kdc;
+ struct fd_event *fde;
+
+ /* a queue of outgoing replies that have been deferred */
+ struct kdc_reply *send_queue;
+
+ kdc_process_fn_t process;
+};
+/*
+ state of an open tcp connection
+*/
+struct kdc_tcp_connection {
+ /* stream connection we belong to */
+ struct stream_connection *conn;
+
+ /* the kdc_server the connection belongs to */
+ struct kdc_server *kdc;
+
+ struct packet_context *packet;
+
+ kdc_process_fn_t process;
+};
+
+/*
+ handle fd send events on a KDC socket
+*/
+static void kdc_send_handler(struct kdc_socket *kdc_socket)
+{
+ while (kdc_socket->send_queue) {
+ struct kdc_reply *rep = kdc_socket->send_queue;
+ NTSTATUS status;
+ size_t sendlen;
+
+ status = socket_sendto(kdc_socket->sock, &rep->packet, &sendlen,
+ rep->dest);
+ if (NT_STATUS_EQUAL(status, STATUS_MORE_ENTRIES)) {
+ break;
+ }
+ if (NT_STATUS_EQUAL(status, NT_STATUS_INVALID_BUFFER_SIZE)) {
+ /* Replace with a krb err, response to big */
+ }
+
+ DLIST_REMOVE(kdc_socket->send_queue, rep);
+ talloc_free(rep);
+ }
+
+ if (kdc_socket->send_queue == NULL) {
+ EVENT_FD_NOT_WRITEABLE(kdc_socket->fde);
+ }
+}
/*
- handle fd events on a cldap_socket
+ handle fd recv events on a KDC socket
+*/
+static void kdc_recv_handler(struct kdc_socket *kdc_socket)
+{
+ NTSTATUS status;
+ TALLOC_CTX *tmp_ctx = talloc_new(kdc_socket);
+ DATA_BLOB blob;
+ struct kdc_reply *rep;
+ DATA_BLOB reply;
+ size_t nread, dsize;
+ struct socket_address *src;
+ struct socket_address *my_addr;
+ int ret;
+
+ status = socket_pending(kdc_socket->sock, &dsize);
+ if (!NT_STATUS_IS_OK(status)) {
+ talloc_free(tmp_ctx);
+ return;
+ }
+
+ blob = data_blob_talloc(tmp_ctx, NULL, dsize);
+ if (blob.data == NULL) {
+ /* hope this is a temporary low memory condition */
+ talloc_free(tmp_ctx);
+ return;
+ }
+
+ status = socket_recvfrom(kdc_socket->sock, blob.data, blob.length, &nread,
+ tmp_ctx, &src);
+ if (!NT_STATUS_IS_OK(status)) {
+ talloc_free(tmp_ctx);
+ return;
+ }
+ blob.length = nread;
+
+ DEBUG(10,("Received krb5 UDP packet of length %lu from %s:%u\n",
+ (long)blob.length, src->addr, (uint16_t)src->port));
+
+ my_addr = socket_get_my_addr(kdc_socket->sock, tmp_ctx);
+ if (!my_addr) {
+ talloc_free(tmp_ctx);
+ return;
+ }
+
+
+ /* Call krb5 */
+ ret = kdc_socket->process(kdc_socket->kdc,
+ tmp_ctx,
+ &blob,
+ &reply,
+ src, my_addr,
+ 1 /* Datagram */);
+ if (!ret) {
+ talloc_free(tmp_ctx);
+ return;
+ }
+
+ /* queue a pending reply */
+ rep = talloc(kdc_socket, struct kdc_reply);
+ if (rep == NULL) {
+ talloc_free(tmp_ctx);
+ return;
+ }
+ rep->dest = talloc_steal(rep, src);
+ rep->packet = reply;
+ talloc_steal(rep, reply.data);
+
+ if (rep->packet.data == NULL) {
+ talloc_free(rep);
+ talloc_free(tmp_ctx);
+ return;
+ }
+
+ DLIST_ADD_END(kdc_socket->send_queue, rep, struct kdc_reply *);
+ EVENT_FD_WRITEABLE(kdc_socket->fde);
+ talloc_free(tmp_ctx);
+}
+
+/*
+ handle fd events on a KDC socket
*/
static void kdc_socket_handler(struct event_context *ev, struct fd_event *fde,
uint16_t flags, void *private)
{
- NTSTATUS status;
struct kdc_socket *kdc_socket = talloc_get_type(private, struct kdc_socket);
if (flags & EVENT_FD_WRITE) {
- /* this should not happen */
- } else if (flags & EVENT_FD_READ) {
- TALLOC_CTX *tmp_ctx = talloc_new(kdc_socket);
- DATA_BLOB blob = data_blob_talloc(tmp_ctx, NULL, 64 * 1024);
- size_t nread;
- const char *src_addr;
- int src_port;
-
- DEBUG(0, ("incoming!\n"));
-
- status = socket_recvfrom(kdc_socket->sock, blob.data, blob.length, &nread, 0,
- &src_addr, &src_port);
- if (!NT_STATUS_IS_OK(status)) {
- talloc_free(tmp_ctx);
- return;
- }
- talloc_steal(tmp_ctx, src_addr);
- blob.length = nread;
-
- DEBUG(2,("Received krb5 packet of length %d from %s:%d\n",
- blob.length, src_addr, src_port));
-
+ kdc_send_handler(kdc_socket);
+ }
+ if (flags & EVENT_FD_READ) {
+ kdc_recv_handler(kdc_socket);
+ }
+}
+
+static void kdc_tcp_terminate_connection(struct kdc_tcp_connection *kdcconn, const char *reason)
+{
+ stream_terminate_connection(kdcconn->conn, reason);
+}
+
+/*
+ receive a full packet on a KDC connection
+*/
+static NTSTATUS kdc_tcp_recv(void *private, DATA_BLOB blob)
+{
+ struct kdc_tcp_connection *kdcconn = talloc_get_type(private,
+ struct kdc_tcp_connection);
+ NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
+ TALLOC_CTX *tmp_ctx = talloc_new(kdcconn);
+ int ret;
+ DATA_BLOB input, reply;
+ struct socket_address *src_addr;
+ struct socket_address *my_addr;
+
+ talloc_steal(tmp_ctx, blob.data);
+
+ src_addr = socket_get_peer_addr(kdcconn->conn->socket, tmp_ctx);
+ if (!src_addr) {
+ talloc_free(tmp_ctx);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ my_addr = socket_get_my_addr(kdcconn->conn->socket, tmp_ctx);
+ if (!my_addr) {
+ talloc_free(tmp_ctx);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ /* Call krb5 */
+ input = data_blob_const(blob.data + 4, blob.length - 4);
+
+ ret = kdcconn->process(kdcconn->kdc,
+ tmp_ctx,
+ &input,
+ &reply,
+ src_addr,
+ my_addr,
+ 0 /* Not datagram */);
+ if (!ret) {
+ talloc_free(tmp_ctx);
+ return NT_STATUS_INTERNAL_ERROR;
+ }
+
+ /* and now encode the reply */
+ blob = data_blob_talloc(kdcconn, NULL, reply.length + 4);
+ if (!blob.data) {
+ talloc_free(tmp_ctx);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ RSIVAL(blob.data, 0, reply.length);
+ memcpy(blob.data + 4, reply.data, reply.length);
+
+ status = packet_send(kdcconn->packet, blob);
+ if (!NT_STATUS_IS_OK(status)) {
+ talloc_free(tmp_ctx);
+ return status;
+ }
+
+ /* the call isn't needed any more */
+ talloc_free(tmp_ctx);
+ return NT_STATUS_OK;
+}
+
+/*
+ receive some data on a KDC connection
+*/
+static void kdc_tcp_recv_handler(struct stream_connection *conn, uint16_t flags)
+{
+ struct kdc_tcp_connection *kdcconn = talloc_get_type(conn->private,
+ struct kdc_tcp_connection);
+ packet_recv(kdcconn->packet);
+}
+
+/*
+ called on a tcp recv error
+*/
+static void kdc_tcp_recv_error(void *private, NTSTATUS status)
+{
+ struct kdc_tcp_connection *kdcconn = talloc_get_type(private, struct kdc_tcp_connection);
+ kdc_tcp_terminate_connection(kdcconn, nt_errstr(status));
+}
+/*
+ called when we can write to a connection
+*/
+static void kdc_tcp_send(struct stream_connection *conn, uint16_t flags)
+{
+ struct kdc_tcp_connection *kdcconn = talloc_get_type(conn->private,
+ struct kdc_tcp_connection);
+ packet_queue_run(kdcconn->packet);
+}
+
+/**
+ Wrapper for krb5_kdc_process_krb5_request, converting to/from Samba
+ calling conventions
+*/
+
+static bool kdc_process(struct kdc_server *kdc,
+ TALLOC_CTX *mem_ctx,
+ DATA_BLOB *input,
+ DATA_BLOB *reply,
+ struct socket_address *peer_addr,
+ struct socket_address *my_addr,
+ int datagram_reply)
+{
+ int ret;
+ krb5_data k5_reply;
+ krb5_data_zero(&k5_reply);
+
+ krb5_kdc_update_time(NULL);
+
+ DEBUG(10,("Received KDC packet of length %lu from %s:%d\n",
+ (long)input->length - 4, peer_addr->addr, peer_addr->port));
+
+ ret = krb5_kdc_process_krb5_request(kdc->smb_krb5_context->krb5_context,
+ kdc->config,
+ input->data, input->length,
+ &k5_reply,
+ peer_addr->addr,
+ peer_addr->sockaddr,
+ datagram_reply);
+ if (ret == -1) {
+ *reply = data_blob(NULL, 0);
+ return false;
+ }
+ if (k5_reply.length) {
+ *reply = data_blob_talloc(mem_ctx, k5_reply.data, k5_reply.length);
+ krb5_free_data_contents(kdc->smb_krb5_context->krb5_context, &k5_reply);
+ } else {
+ *reply = data_blob(NULL, 0);
}
+ return true;
}
+/*
+ called when we get a new connection
+*/
+static void kdc_tcp_generic_accept(struct stream_connection *conn, kdc_process_fn_t process_fn)
+{
+ struct kdc_server *kdc = talloc_get_type(conn->private, struct kdc_server);
+ struct kdc_tcp_connection *kdcconn;
+
+ kdcconn = talloc_zero(conn, struct kdc_tcp_connection);
+ if (!kdcconn) {
+ stream_terminate_connection(conn, "kdc_tcp_accept: out of memory");
+ return;
+ }
+ kdcconn->conn = conn;
+ kdcconn->kdc = kdc;
+ kdcconn->process = process_fn;
+ conn->private = kdcconn;
+
+ kdcconn->packet = packet_init(kdcconn);
+ if (kdcconn->packet == NULL) {
+ kdc_tcp_terminate_connection(kdcconn, "kdc_tcp_accept: out of memory");
+ return;
+ }
+ packet_set_private(kdcconn->packet, kdcconn);
+ packet_set_socket(kdcconn->packet, conn->socket);
+ packet_set_callback(kdcconn->packet, kdc_tcp_recv);
+ packet_set_full_request(kdcconn->packet, packet_full_request_u32);
+ packet_set_error_handler(kdcconn->packet, kdc_tcp_recv_error);
+ packet_set_event_context(kdcconn->packet, conn->event.ctx);
+ packet_set_fde(kdcconn->packet, conn->event.fde);
+ packet_set_serialise(kdcconn->packet);
+}
+
+static void kdc_tcp_accept(struct stream_connection *conn)
+{
+ kdc_tcp_generic_accept(conn, kdc_process);
+}
+
+static const struct stream_server_ops kdc_tcp_stream_ops = {
+ .name = "kdc_tcp",
+ .accept_connection = kdc_tcp_accept,
+ .recv_handler = kdc_tcp_recv_handler,
+ .send_handler = kdc_tcp_send
+};
+
+static void kpasswdd_tcp_accept(struct stream_connection *conn)
+{
+ kdc_tcp_generic_accept(conn, kpasswdd_process);
+}
+
+static const struct stream_server_ops kpasswdd_tcp_stream_ops = {
+ .name = "kpasswdd_tcp",
+ .accept_connection = kpasswdd_tcp_accept,
+ .recv_handler = kdc_tcp_recv_handler,
+ .send_handler = kdc_tcp_send
+};
+
/*
start listening on the given address
*/
-static NTSTATUS kdc_add_socket(struct kdc_server *kdc, const char *address)
+static NTSTATUS kdc_add_socket(struct kdc_server *kdc, const char *address,
+ uint16_t kdc_port, uint16_t kpasswd_port)
{
- struct kdc_socket *kdc_socket;
+ const struct model_ops *model_ops;
+ struct kdc_socket *kdc_socket;
+ struct kdc_socket *kpasswd_socket;
+ struct socket_address *kdc_address, *kpasswd_address;
NTSTATUS status;
kdc_socket = talloc(kdc, struct kdc_socket);
NT_STATUS_HAVE_NO_MEMORY(kdc_socket);
+ kpasswd_socket = talloc(kdc, struct kdc_socket);
+ NT_STATUS_HAVE_NO_MEMORY(kpasswd_socket);
+
status = socket_create("ip", SOCKET_TYPE_DGRAM, &kdc_socket->sock, 0);
if (!NT_STATUS_IS_OK(status)) {
talloc_free(kdc_socket);
return status;
}
+ status = socket_create("ip", SOCKET_TYPE_DGRAM, &kpasswd_socket->sock, 0);
+ if (!NT_STATUS_IS_OK(status)) {
+ talloc_free(kpasswd_socket);
+ return status;
+ }
+
kdc_socket->kdc = kdc;
+ kdc_socket->send_queue = NULL;
+ kdc_socket->process = kdc_process;
talloc_steal(kdc_socket, kdc_socket->sock);
kdc_socket->fde = event_add_fd(kdc->task->event_ctx, kdc,
- socket_get_fd(kdc_socket->sock), 0,
+ socket_get_fd(kdc_socket->sock), EVENT_FD_READ,
kdc_socket_handler, kdc_socket);
- status = socket_listen(kdc_socket->sock, address, lp_krb5_port(), 0, 0);
+ kdc_address = socket_address_from_strings(kdc_socket, kdc_socket->sock->backend_name,
+ address, kdc_port);
+ NT_STATUS_HAVE_NO_MEMORY(kdc_address);
+
+ status = socket_listen(kdc_socket->sock, kdc_address, 0, 0);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0,("Failed to bind to %s:%d UDP for kdc - %s\n",
+ address, kdc_port, nt_errstr(status)));
+ talloc_free(kdc_socket);
+ return status;
+ }
+
+ kpasswd_socket->kdc = kdc;
+ kpasswd_socket->send_queue = NULL;
+ kpasswd_socket->process = kpasswdd_process;
+
+ talloc_steal(kpasswd_socket, kpasswd_socket->sock);
+
+ kpasswd_socket->fde = event_add_fd(kdc->task->event_ctx, kdc,
+ socket_get_fd(kpasswd_socket->sock), EVENT_FD_READ,
+ kdc_socket_handler, kpasswd_socket);
+
+ kpasswd_address = socket_address_from_strings(kpasswd_socket, kpasswd_socket->sock->backend_name,
+ address, kpasswd_port);
+ NT_STATUS_HAVE_NO_MEMORY(kpasswd_address);
+
+ status = socket_listen(kpasswd_socket->sock, kpasswd_address, 0, 0);
if (!NT_STATUS_IS_OK(status)) {
- DEBUG(0,("Failed to bind to %s:%d - %s\n",
- address, lp_krb5_port(), nt_errstr(status)));
+ DEBUG(0,("Failed to bind to %s:%d UDP for kpasswd - %s\n",
+ address, kpasswd_port, nt_errstr(status)));
+ talloc_free(kpasswd_socket);
+ return status;
+ }
+
+ /* within the kdc task we want to be a single process, so
+ ask for the single process model ops and pass these to the
+ stream_setup_socket() call. */
+ model_ops = process_model_byname("single");
+ if (!model_ops) {
+ DEBUG(0,("Can't find 'single' process model_ops\n"));
+ talloc_free(kdc_socket);
+ return NT_STATUS_INTERNAL_ERROR;
+ }
+
+ status = stream_setup_socket(kdc->task->event_ctx,
+ kdc->task->lp_ctx,
+ model_ops,
+ &kdc_tcp_stream_ops,
+ "ip", address, &kdc_port,
+ lp_socket_options(kdc->task->lp_ctx),
+ kdc);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0,("Failed to bind to %s:%u TCP - %s\n",
+ address, kdc_port, nt_errstr(status)));
+ talloc_free(kdc_socket);
+ return status;
+ }
+
+ status = stream_setup_socket(kdc->task->event_ctx,
+ kdc->task->lp_ctx,
+ model_ops,
+ &kpasswdd_tcp_stream_ops,
+ "ip", address, &kpasswd_port,
+ lp_socket_options(kdc->task->lp_ctx),
+ kdc);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0,("Failed to bind to %s:%u TCP - %s\n",
+ address, kpasswd_port, nt_errstr(status)));
talloc_free(kdc_socket);
return status;
}
/*
setup our listening sockets on the configured network interfaces
*/
-NTSTATUS kdc_startup_interfaces(struct kdc_server *kdc)
+static NTSTATUS kdc_startup_interfaces(struct kdc_server *kdc, struct loadparm_context *lp_ctx,
+ struct interface *ifaces)
{
- int num_interfaces = iface_count();
+ int num_interfaces;
TALLOC_CTX *tmp_ctx = talloc_new(kdc);
NTSTATUS status;
-
- /* if we are allowing incoming packets from any address, then
- we need to bind to the wildcard address */
- if (!lp_bind_interfaces_only()) {
- status = kdc_add_socket(kdc, "0.0.0.0");
+ int i;
+
+ num_interfaces = iface_count(ifaces);
+
+ for (i=0; i<num_interfaces; i++) {
+ const char *address = talloc_strdup(tmp_ctx, iface_n_ip(ifaces, i));
+ status = kdc_add_socket(kdc, address, lp_krb5_port(lp_ctx),
+ lp_kpasswd_port(lp_ctx));
NT_STATUS_NOT_OK_RETURN(status);
- } else {
- int i;
+ }
+
+ talloc_free(tmp_ctx);
+
+ return NT_STATUS_OK;
+}
- for (i=0; i<num_interfaces; i++) {
- const char *address = talloc_strdup(tmp_ctx, iface_n_ip(i));
- status = kdc_add_socket(kdc, address);
- NT_STATUS_NOT_OK_RETURN(status);
+static struct krb5plugin_windc_ftable windc_plugin_table = {
+ .minor_version = KRB5_WINDC_PLUGING_MINOR,
+ .init = samba_kdc_plugin_init,
+ .fini = samba_kdc_plugin_fini,
+ .pac_generate = samba_kdc_get_pac,
+ .pac_verify = samba_kdc_reget_pac,
+ .client_access = samba_kdc_check_client_access,
+};
+
+
+static NTSTATUS kdc_check_generic_kerberos(struct irpc_message *msg,
+ struct kdc_check_generic_kerberos *r)
+{
+ struct PAC_Validate pac_validate;
+ DATA_BLOB srv_sig;
+ struct PAC_SIGNATURE_DATA kdc_sig;
+ struct kdc_server *kdc = talloc_get_type(msg->private, struct kdc_server);
+ enum ndr_err_code ndr_err;
+ krb5_enctype etype;
+ int ret;
+ hdb_entry_ex ent;
+ krb5_principal principal;
+ krb5_keyblock keyblock;
+ Key *key;
+
+ /* There is no reply to this request */
+ r->out.generic_reply = data_blob(NULL, 0);
+
+ ndr_err = ndr_pull_struct_blob(&r->in.generic_request, msg,
+ lp_iconv_convenience(kdc->task->lp_ctx),
+ &pac_validate,
+ (ndr_pull_flags_fn_t)ndr_pull_PAC_Validate);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+#if 0
+ /* Windows does not check this */
+ if (pac_validate.MessageType != 3) {
+ /* We don't implement any other message types - such as certificate validation - yet */
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+#endif
+ if (pac_validate.ChecksumAndSignature.length != (pac_validate.ChecksumLength + pac_validate.SignatureLength)
+ || pac_validate.ChecksumAndSignature.length < pac_validate.ChecksumLength
+ || pac_validate.ChecksumAndSignature.length < pac_validate.SignatureLength ) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ srv_sig = data_blob_const(pac_validate.ChecksumAndSignature.data,
+ pac_validate.ChecksumLength);
+
+ if (pac_validate.SignatureType == CKSUMTYPE_HMAC_MD5) {
+ etype = ETYPE_ARCFOUR_HMAC_MD5;
+ } else {
+ ret = krb5_cksumtype_to_enctype(kdc->smb_krb5_context->krb5_context, pac_validate.SignatureType,
+ &etype);
+ if (ret != 0) {
+ return NT_STATUS_LOGON_FAILURE;
}
}
- talloc_free(tmp_ctx);
+ ret = krb5_make_principal(kdc->smb_krb5_context->krb5_context, &principal,
+ lp_realm(kdc->task->lp_ctx),
+ "krbtgt", lp_realm(kdc->task->lp_ctx),
+ NULL);
+
+ if (ret != 0) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ ret = kdc->config->db[0]->hdb_fetch(kdc->smb_krb5_context->krb5_context,
+ kdc->config->db[0],
+ principal,
+ HDB_F_GET_KRBTGT | HDB_F_DECRYPT,
+ &ent);
+
+ if (ret != 0) {
+ hdb_free_entry(kdc->smb_krb5_context->krb5_context, &ent);
+ krb5_free_principal(kdc->smb_krb5_context->krb5_context, principal);
+
+ return NT_STATUS_LOGON_FAILURE;
+ }
+
+ ret = hdb_enctype2key(kdc->smb_krb5_context->krb5_context, &ent.entry, etype, &key);
+
+ if (ret != 0) {
+ hdb_free_entry(kdc->smb_krb5_context->krb5_context, &ent);
+ krb5_free_principal(kdc->smb_krb5_context->krb5_context, principal);
+ return NT_STATUS_LOGON_FAILURE;
+ }
+
+ keyblock = key->key;
+
+ kdc_sig.type = pac_validate.SignatureType;
+ kdc_sig.signature = data_blob_const(&pac_validate.ChecksumAndSignature.data[pac_validate.ChecksumLength],
+ pac_validate.SignatureLength);
+ ret = check_pac_checksum(msg, srv_sig, &kdc_sig,
+ kdc->smb_krb5_context->krb5_context, &keyblock);
+
+ hdb_free_entry(kdc->smb_krb5_context->krb5_context, &ent);
+ krb5_free_principal(kdc->smb_krb5_context->krb5_context, principal);
+
+ if (ret != 0) {
+ return NT_STATUS_LOGON_FAILURE;
+ }
+
return NT_STATUS_OK;
}
+
+
/*
startup the kdc task
*/
{
struct kdc_server *kdc;
NTSTATUS status;
+ krb5_error_code ret;
+ struct interface *ifaces;
- if (iface_count() == 0) {
- task_terminate(task, "kdc: no network interfaces configured");
+ switch (lp_server_role(task->lp_ctx)) {
+ case ROLE_STANDALONE:
+ task_server_terminate(task, "kdc: no KDC required in standalone configuration");
+ return;
+ case ROLE_DOMAIN_MEMBER:
+ task_server_terminate(task, "kdc: no KDC required in member server configuration");
+ return;
+ case ROLE_DOMAIN_CONTROLLER:
+ /* Yes, we want a KDC */
+ break;
+ }
+
+ load_interfaces(task, lp_interfaces(task->lp_ctx), &ifaces);
+
+ if (iface_count(ifaces) == 0) {
+ task_server_terminate(task, "kdc: no network interfaces configured");
return;
}
+ task_server_set_title(task, "task[kdc]");
+
kdc = talloc(task, struct kdc_server);
if (kdc == NULL) {
- task_terminate(task, "kdc: out of memory");
+ task_server_terminate(task, "kdc: out of memory");
return;
}
kdc->task = task;
- /* Setup the KDC configuration */
- kdc->config = talloc(kdc, struct krb5_kdc_configuration);
- if (!kdc->config) {
- task_terminate(task, "kdc: out of memory");
+ initialize_krb5_error_table();
+
+ ret = smb_krb5_init_context(kdc, task->event_ctx, task->lp_ctx, &kdc->smb_krb5_context);
+ if (ret) {
+ DEBUG(1,("kdc_task_init: krb5_init_context failed (%s)\n",
+ error_message(ret)));
+ task_server_terminate(task, "kdc: krb5_init_context failed");
+ return;
+ }
+
+ krb5_add_et_list(kdc->smb_krb5_context->krb5_context, initialize_hdb_error_table_r);
+
+ ret = krb5_kdc_get_config(kdc->smb_krb5_context->krb5_context,
+ &kdc->config);
+ if(ret) {
+ task_server_terminate(task, "kdc: failed to get KDC configuration");
return;
}
- krb5_kdc_default_config(kdc->config);
- /* TODO: Fill in the hdb and logging details */
+ kdc->config->logf = kdc->smb_krb5_context->logf;
+ kdc->config->db = talloc(kdc, struct HDB *);
+ if (!kdc->config->db) {
+ task_server_terminate(task, "kdc: out of memory");
+ return;
+ }
+ kdc->config->num_db = 1;
+
+ status = kdc_hdb_ldb_create(kdc, task->event_ctx, task->lp_ctx,
+ kdc->smb_krb5_context->krb5_context,
+ &kdc->config->db[0], NULL);
+ if (!NT_STATUS_IS_OK(status)) {
+ task_server_terminate(task, "kdc: hdb_ldb_create (setup KDC database) failed");
+ return;
+ }
+
+ ret = krb5_kt_register(kdc->smb_krb5_context->krb5_context, &hdb_kt_ops);
+ if(ret) {
+ task_server_terminate(task, "kdc: failed to register hdb keytab");
+ return;
+ }
+
+ /* Registar WinDC hooks */
+ ret = krb5_plugin_register(kdc->smb_krb5_context->krb5_context,
+ PLUGIN_TYPE_DATA, "windc",
+ &windc_plugin_table);
+ if(ret) {
+ task_server_terminate(task, "kdc: failed to register hdb keytab");
+ return;
+ }
+
+ krb5_kdc_windc_init(kdc->smb_krb5_context->krb5_context);
+
+ kdc_mem_ctx = kdc->smb_krb5_context;
+ kdc_lp_ctx = task->lp_ctx;
/* start listening on the configured network interfaces */
- status = kdc_startup_interfaces(kdc);
+ status = kdc_startup_interfaces(kdc, task->lp_ctx, ifaces);
if (!NT_STATUS_IS_OK(status)) {
- task_terminate(task, "kdc failed to setup interfaces");
+ task_server_terminate(task, "kdc failed to setup interfaces");
return;
}
- DEBUG(0, ("When I grow up, I want to be a KDC!\n"));
-}
-
+ status = IRPC_REGISTER(task->msg_ctx, irpc, KDC_CHECK_GENERIC_KERBEROS,
+ kdc_check_generic_kerberos, kdc);
+ if (!NT_STATUS_IS_OK(status)) {
+ task_server_terminate(task, "nbtd failed to setup monitoring");
+ return;
+ }
-/*
- called on startup of the KDC service
-*/
-static NTSTATUS kdc_init(struct event_context *event_ctx,
- const struct model_ops *model_ops)
-{
- return task_server_startup(event_ctx, model_ops, kdc_task_init);
+ irpc_add_name(task->msg_ctx, "kdc_server");
}
+
/* called at smbd startup - register ourselves as a server service */
NTSTATUS server_service_kdc_init(void)
{
- return register_server_service("kdc", kdc_init);
+ return register_server_service("kdc", kdc_task_init);
}
git.samba.org / kai / samba.git / blobdiff