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
#include "smbd/process_model.h"
#include "lib/events/events.h"
#include "lib/socket/socket.h"
-#include "kdc/kdc.h"
#include "system/network.h"
-#include "lib/util/dlinklist.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 "heimdal/kdc/windc_plugin.h"
-#include "heimdal/lib/krb5/krb5_locl.h"
-#include "heimdal/kdc/kdc_locl.h"
#include "param/param.h"
+#include "kdc/kdc.h"
+#include "librpc/gen_ndr/ndr_misc.h"
-/* Disgusting hack to get a mem_ctx into the hdb plugin, when used as a keytab */
-TALLOC_CTX *kdc_mem_ctx;
+/* Disgusting hack to get a mem_ctx and lp_ctx into the hdb plugin, when
+ * used as a keytab */
+TALLOC_CTX *hdb_samba4_mem_ctx;
+struct tevent_context *hdb_samba4_ev_ctx;
+struct loadparm_context *hdb_samba4_lp_ctx;
/* hold all the info needed to send a reply */
struct kdc_reply {
struct kdc_socket {
struct socket_context *sock;
struct kdc_server *kdc;
- struct fd_event *fde;
+ struct tevent_fd *fde;
/* a queue of outgoing replies that have been deferred */
struct kdc_reply *send_queue;
/*
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)
+static void kdc_socket_handler(struct tevent_context *ev, struct tevent_fd *fde,
+ uint16_t flags, void *private_data)
{
- struct kdc_socket *kdc_socket = talloc_get_type(private, struct kdc_socket);
+ struct kdc_socket *kdc_socket = talloc_get_type(private_data, struct kdc_socket);
if (flags & EVENT_FD_WRITE) {
kdc_send_handler(kdc_socket);
}
/*
receive a full packet on a KDC connection
*/
-static NTSTATUS kdc_tcp_recv(void *private, DATA_BLOB blob)
+static NTSTATUS kdc_tcp_recv(void *private_data, DATA_BLOB blob)
{
- struct kdc_tcp_connection *kdcconn = talloc_get_type(private,
+ struct kdc_tcp_connection *kdcconn = talloc_get_type(private_data,
struct kdc_tcp_connection);
NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
TALLOC_CTX *tmp_ctx = talloc_new(kdcconn);
*/
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 *kdcconn = talloc_get_type(conn->private_data,
struct kdc_tcp_connection);
packet_recv(kdcconn->packet);
}
/*
called on a tcp recv error
*/
-static void kdc_tcp_recv_error(void *private, NTSTATUS status)
+static void kdc_tcp_recv_error(void *private_data, NTSTATUS status)
{
- struct kdc_tcp_connection *kdcconn = talloc_get_type(private, struct kdc_tcp_connection);
+ struct kdc_tcp_connection *kdcconn = talloc_get_type(private_data,
+ struct kdc_tcp_connection);
kdc_tcp_terminate_connection(kdcconn, nt_errstr(status));
}
*/
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 *kdcconn = talloc_get_type(conn->private_data,
struct kdc_tcp_connection);
packet_queue_run(kdcconn->packet);
}
}
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);
+ krb5_data_free(&k5_reply);
} else {
*reply = data_blob(NULL, 0);
}
*/
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_server *kdc = talloc_get_type(conn->private_data, struct kdc_server);
struct kdc_tcp_connection *kdcconn;
kdcconn = talloc_zero(conn, struct kdc_tcp_connection);
kdcconn->conn = conn;
kdcconn->kdc = kdc;
kdcconn->process = process_fn;
- conn->private = kdcconn;
+ conn->private_data = kdcconn;
kdcconn->packet = packet_init(kdcconn);
if (kdcconn->packet == NULL) {
/*
start listening on the given address
*/
-static NTSTATUS kdc_add_socket(struct kdc_server *kdc, const char *address,
- uint16_t kdc_port, uint16_t kpasswd_port)
+static NTSTATUS kdc_add_socket(struct kdc_server *kdc,
+ const struct model_ops *model_ops,
+ const char *name,
+ const char *address,
+ uint16_t port,
+ const struct stream_server_ops *tcp_stream_ops,
+ kdc_process_fn_t process)
{
- const struct model_ops *model_ops;
struct kdc_socket *kdc_socket;
- struct kdc_socket *kpasswd_socket;
- struct socket_address *kdc_address, *kpasswd_address;
+ struct socket_address *socket_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;
+ kdc_socket->process = 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), EVENT_FD_READ,
- kdc_socket_handler, kdc_socket);
-
- 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);
+ socket_get_fd(kdc_socket->sock), EVENT_FD_READ,
+ kdc_socket_handler, kdc_socket);
- kpasswd_address = socket_address_from_strings(kpasswd_socket, kpasswd_socket->sock->backend_name,
- address, kpasswd_port);
- NT_STATUS_HAVE_NO_MEMORY(kpasswd_address);
+ socket_address = socket_address_from_strings(kdc_socket, kdc_socket->sock->backend_name,
+ address, port);
+ NT_STATUS_HAVE_NO_MEMORY_AND_FREE(socket_address, kdc_socket);
- status = socket_listen(kpasswd_socket->sock, kpasswd_address, 0, 0);
+ status = socket_listen(kdc_socket->sock, socket_address, 0, 0);
if (!NT_STATUS_IS_OK(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, 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)));
+ DEBUG(0,("Failed to bind to %s:%d UDP for %s - %s\n",
+ address, port, name, nt_errstr(status)));
talloc_free(kdc_socket);
return status;
}
- status = stream_setup_socket(kdc->task->event_ctx, model_ops,
- &kpasswdd_tcp_stream_ops,
- "ip", address, &kpasswd_port,
+ status = stream_setup_socket(kdc->task->event_ctx,
+ kdc->task->lp_ctx,
+ model_ops,
+ tcp_stream_ops,
+ "ip", address, &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)));
+ address, port, nt_errstr(status)));
talloc_free(kdc_socket);
return status;
}
/*
setup our listening sockets on the configured network interfaces
*/
-static NTSTATUS kdc_startup_interfaces(struct kdc_server *kdc, struct loadparm_context *lp_ctx)
+static NTSTATUS kdc_startup_interfaces(struct kdc_server *kdc, struct loadparm_context *lp_ctx,
+ struct interface *ifaces)
{
- int num_interfaces = iface_count(lp_ctx);
+ const struct model_ops *model_ops;
+ int num_interfaces;
TALLOC_CTX *tmp_ctx = talloc_new(kdc);
NTSTATUS status;
-
int i;
+
+ /* 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_startup(kdc->task->event_ctx, "single");
+ if (!model_ops) {
+ DEBUG(0,("Can't find 'single' process model_ops\n"));
+ return NT_STATUS_INTERNAL_ERROR;
+ }
+
+ num_interfaces = iface_count(ifaces);
for (i=0; i<num_interfaces; i++) {
- const char *address = talloc_strdup(tmp_ctx, iface_n_ip(lp_ctx, i));
- status = kdc_add_socket(kdc, address, lp_krb5_port(lp_ctx),
- lp_kpasswd_port(lp_ctx));
- NT_STATUS_NOT_OK_RETURN(status);
+ const char *address = talloc_strdup(tmp_ctx, iface_n_ip(ifaces, i));
+ uint16_t kdc_port = lp_krb5_port(lp_ctx);
+ uint16_t kpasswd_port = lp_kpasswd_port(lp_ctx);
+
+ if (kdc_port) {
+ status = kdc_add_socket(kdc, model_ops,
+ "kdc", address, kdc_port,
+ &kdc_tcp_stream_ops,
+ kdc_process);
+ NT_STATUS_NOT_OK_RETURN(status);
+ }
+
+ if (kpasswd_port) {
+ status = kdc_add_socket(kdc, model_ops,
+ "kpasswd", address, kpasswd_port,
+ &kpasswdd_tcp_stream_ops,
+ kpasswdd_process);
+ NT_STATUS_NOT_OK_RETURN(status);
+ }
}
talloc_free(tmp_ctx);
return NT_STATUS_OK;
}
-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_data, 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 (pac_validate.MessageType != 3) {
+ /* We don't implement any other message types - such as certificate validation - yet */
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ 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;
+ }
+ }
+
+ 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;
+}
/*
struct kdc_server *kdc;
NTSTATUS status;
krb5_error_code ret;
+ struct interface *ifaces;
switch (lp_server_role(task->lp_ctx)) {
case ROLE_STANDALONE:
- task_server_terminate(task, "kdc: no KDC required in standalone configuration");
+ task_server_terminate(task, "kdc: no KDC required in standalone configuration", false);
return;
case ROLE_DOMAIN_MEMBER:
- task_server_terminate(task, "kdc: no KDC required in member server configuration");
+ task_server_terminate(task, "kdc: no KDC required in member server configuration", false);
return;
case ROLE_DOMAIN_CONTROLLER:
/* Yes, we want a KDC */
break;
}
- if (iface_count(task->lp_ctx) == 0) {
- task_server_terminate(task, "kdc: no network interfaces configured");
+ load_interfaces(task, lp_interfaces(task->lp_ctx), &ifaces);
+
+ if (iface_count(ifaces) == 0) {
+ task_server_terminate(task, "kdc: no network interfaces configured", false);
return;
}
kdc = talloc(task, struct kdc_server);
if (kdc == NULL) {
- task_server_terminate(task, "kdc: out of memory");
+ task_server_terminate(task, "kdc: out of memory", true);
return;
}
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");
+ task_server_terminate(task, "kdc: krb5_init_context failed", true);
return;
}
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");
+ task_server_terminate(task, "kdc: failed to get KDC configuration", true);
return;
}
-
+
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");
+ task_server_terminate(task, "kdc: out of memory", true);
return;
}
kdc->config->num_db = 1;
- status = kdc_hdb_ldb_create(kdc, task->lp_ctx,
- kdc->smb_krb5_context->krb5_context,
- &kdc->config->db[0], NULL);
+ status = hdb_samba4_create_kdc(kdc, task->event_ctx, task->lp_ctx,
+ kdc->smb_krb5_context->krb5_context,
+ &kdc->config->db[0]);
if (!NT_STATUS_IS_OK(status)) {
- task_server_terminate(task, "kdc: hdb_ldb_create (setup KDC database) failed");
+ task_server_terminate(task, "kdc: hdb_samba4_create_kdc (setup KDC database) failed", true);
return;
}
+ /* Register hdb-samba4 hooks for use as a keytab */
+
+ kdc->hdb_samba4_context = talloc(kdc, struct hdb_samba4_context);
+ if (!kdc->hdb_samba4_context) {
+ task_server_terminate(task, "kdc: out of memory", true);
+ return;
+ }
+
+ kdc->hdb_samba4_context->ev_ctx = task->event_ctx;
+ kdc->hdb_samba4_context->lp_ctx = task->lp_ctx;
+
+ ret = krb5_plugin_register(kdc->smb_krb5_context->krb5_context,
+ PLUGIN_TYPE_DATA, "hdb",
+ &hdb_samba4);
+ if(ret) {
+ task_server_terminate(task, "kdc: failed to register hdb keytab", true);
+ 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");
+ task_server_terminate(task, "kdc: failed to register hdb keytab", true);
return;
}
/* Registar WinDC hooks */
- ret = _krb5_plugin_register(kdc->smb_krb5_context->krb5_context,
- PLUGIN_TYPE_DATA, "windc",
- &windc_plugin_table);
+ 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");
+ task_server_terminate(task, "kdc: failed to register hdb keytab", true);
return;
}
krb5_kdc_windc_init(kdc->smb_krb5_context->krb5_context);
- kdc_mem_ctx = kdc->smb_krb5_context;
-
/* start listening on the configured network interfaces */
- status = kdc_startup_interfaces(kdc, task->lp_ctx);
+ status = kdc_startup_interfaces(kdc, task->lp_ctx, ifaces);
+ if (!NT_STATUS_IS_OK(status)) {
+ task_server_terminate(task, "kdc failed to setup interfaces", true);
+ return;
+ }
+
+ 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, "kdc failed to setup interfaces");
+ task_server_terminate(task, "nbtd failed to setup monitoring", true);
return;
}
}
-/*
- called on startup of the KDC service
-*/
-static NTSTATUS kdc_init(struct event_context *event_ctx,
- struct loadparm_context *lp_ctx,
- const struct model_ops *model_ops)
-{
- return task_server_startup(event_ctx, model_ops, kdc_task_init);
-}
-
/* 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 / samba.git / blobdiff