*/
#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 "lib/tsocket/tsocket.h"
#include "libcli/util/tstream.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/stream/packet.h"
#include "lib/socket/netif.h"
#include "param/param.h"
-#include "kdc/kdc.h"
-#include "librpc/gen_ndr/ndr_misc.h"
+#include "kdc/kdc-glue.h"
+#include "dsdb/samdb/samdb.h"
+#include "auth/session.h"
+NTSTATUS server_service_kdc_init(void);
-/* 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;
extern struct krb5plugin_windc_ftable windc_plugin_table;
+extern struct hdb_method hdb_samba4;
+
+static NTSTATUS kdc_proxy_unavailable_error(struct kdc_server *kdc,
+ TALLOC_CTX *mem_ctx,
+ DATA_BLOB *out)
+{
+ int kret;
+ krb5_data k5_error_blob;
+
+ kret = krb5_mk_error(kdc->smb_krb5_context->krb5_context,
+ KRB5KDC_ERR_SVC_UNAVAILABLE, NULL, NULL,
+ NULL, NULL, NULL, NULL, &k5_error_blob);
+ if (kret != 0) {
+ DEBUG(2,(__location__ ": Unable to form krb5 error reply\n"));
+ return NT_STATUS_INTERNAL_ERROR;
+ }
+
+ *out = data_blob_talloc(mem_ctx, k5_error_blob.data, k5_error_blob.length);
+ krb5_data_free(&k5_error_blob);
+ if (!out->data) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ return NT_STATUS_OK;
+}
-typedef bool (*kdc_process_fn_t)(struct kdc_server *kdc,
- TALLOC_CTX *mem_ctx,
- DATA_BLOB *input,
- DATA_BLOB *reply,
- struct tsocket_address *peer_addr,
- struct tsocket_address *my_addr,
- int datagram);
+typedef enum kdc_process_ret (*kdc_process_fn_t)(struct kdc_server *kdc,
+ TALLOC_CTX *mem_ctx,
+ DATA_BLOB *input,
+ DATA_BLOB *reply,
+ struct tsocket_address *peer_addr,
+ struct tsocket_address *my_addr,
+ int datagram);
/* hold information about one kdc socket */
struct kdc_socket {
kdc_process_fn_t process;
};
+struct kdc_tcp_call {
+ struct kdc_tcp_connection *kdc_conn;
+ DATA_BLOB in;
+ DATA_BLOB out;
+ uint8_t out_hdr[4];
+ struct iovec out_iov[2];
+};
+
/*
state of an open tcp connection
*/
struct tevent_queue *send_queue;
};
+
static void kdc_tcp_terminate_connection(struct kdc_tcp_connection *kdcconn, const char *reason)
{
stream_terminate_connection(kdcconn->conn, reason);
calling conventions
*/
-static bool kdc_process(struct kdc_server *kdc,
- TALLOC_CTX *mem_ctx,
- DATA_BLOB *input,
- DATA_BLOB *reply,
- struct tsocket_address *peer_addr,
- struct tsocket_address *my_addr,
- int datagram_reply)
+static enum kdc_process_ret kdc_process(struct kdc_server *kdc,
+ TALLOC_CTX *mem_ctx,
+ DATA_BLOB *input,
+ DATA_BLOB *reply,
+ struct tsocket_address *peer_addr,
+ struct tsocket_address *my_addr,
+ int datagram_reply)
{
int ret;
char *pa;
ret = tsocket_address_bsd_sockaddr(peer_addr, (struct sockaddr *) &ss,
sizeof(struct sockaddr_storage));
if (ret < 0) {
- return false;
+ return KDC_PROCESS_FAILED;
}
pa = tsocket_address_string(peer_addr, mem_ctx);
if (pa == NULL) {
- return false;
+ return KDC_PROCESS_FAILED;
}
DEBUG(10,("Received KDC packet of length %lu from %s\n",
datagram_reply);
if (ret == -1) {
*reply = data_blob(NULL, 0);
- return false;
+ return KDC_PROCESS_FAILED;
+ }
+
+ if (ret == HDB_ERR_NOT_FOUND_HERE) {
+ *reply = data_blob(NULL, 0);
+ return KDC_PROCESS_PROXY;
}
+
if (k5_reply.length) {
*reply = data_blob_talloc(mem_ctx, k5_reply.data, k5_reply.length);
krb5_data_free(&k5_reply);
} else {
*reply = data_blob(NULL, 0);
}
- return true;
+ return KDC_PROCESS_OK;
}
-struct kdc_tcp_call {
- struct kdc_tcp_connection *kdc_conn;
- DATA_BLOB in;
- DATA_BLOB out;
- uint8_t out_hdr[4];
- struct iovec out_iov[2];
-};
-
+static void kdc_tcp_call_proxy_done(struct tevent_req *subreq);
static void kdc_tcp_call_writev_done(struct tevent_req *subreq);
static void kdc_tcp_call_loop(struct tevent_req *subreq)
struct kdc_tcp_connection);
struct kdc_tcp_call *call;
NTSTATUS status;
- bool ok;
+ enum kdc_process_ret ret;
call = talloc(kdc_conn, struct kdc_tcp_call);
if (call == NULL) {
call->in.length -= 4;
/* Call krb5 */
- ok = kdc_conn->kdc_socket->process(kdc_conn->kdc_socket->kdc,
+ ret = kdc_conn->kdc_socket->process(kdc_conn->kdc_socket->kdc,
call,
&call->in,
&call->out,
kdc_conn->conn->remote_address,
kdc_conn->conn->local_address,
0 /* Stream */);
- if (!ok) {
+ if (ret == KDC_PROCESS_FAILED) {
kdc_tcp_terminate_connection(kdc_conn,
"kdc_tcp_call_loop: process function failed");
return;
}
+ if (ret == KDC_PROCESS_PROXY) {
+ uint16_t port;
+
+ if (!kdc_conn->kdc_socket->kdc->am_rodc) {
+ kdc_tcp_terminate_connection(kdc_conn,
+ "kdc_tcp_call_loop: proxying requested when not RODC");
+ return;
+ }
+ port = tsocket_address_inet_port(kdc_conn->conn->local_address);
+
+ subreq = kdc_tcp_proxy_send(call,
+ kdc_conn->conn->event.ctx,
+ kdc_conn->kdc_socket->kdc,
+ port,
+ call->in);
+ if (subreq == NULL) {
+ kdc_tcp_terminate_connection(kdc_conn,
+ "kdc_tcp_call_loop: kdc_tcp_proxy_send failed");
+ return;
+ }
+ tevent_req_set_callback(subreq, kdc_tcp_call_proxy_done, call);
+ return;
+ }
+
+ /* First add the length of the out buffer */
+ RSIVAL(call->out_hdr, 0, call->out.length);
+ call->out_iov[0].iov_base = (char *) call->out_hdr;
+ call->out_iov[0].iov_len = 4;
+
+ call->out_iov[1].iov_base = (char *) call->out.data;
+ call->out_iov[1].iov_len = call->out.length;
+
+ subreq = tstream_writev_queue_send(call,
+ kdc_conn->conn->event.ctx,
+ kdc_conn->tstream,
+ kdc_conn->send_queue,
+ call->out_iov, 2);
+ if (subreq == NULL) {
+ kdc_tcp_terminate_connection(kdc_conn, "kdc_tcp_call_loop: "
+ "no memory for tstream_writev_queue_send");
+ return;
+ }
+ tevent_req_set_callback(subreq, kdc_tcp_call_writev_done, call);
+
+ /*
+ * The krb5 tcp pdu's has the length as 4 byte (initial_read_size),
+ * packet_full_request_u32 provides the pdu length then.
+ */
+ subreq = tstream_read_pdu_blob_send(kdc_conn,
+ kdc_conn->conn->event.ctx,
+ kdc_conn->tstream,
+ 4, /* initial_read_size */
+ packet_full_request_u32,
+ kdc_conn);
+ if (subreq == NULL) {
+ kdc_tcp_terminate_connection(kdc_conn, "kdc_tcp_call_loop: "
+ "no memory for tstream_read_pdu_blob_send");
+ return;
+ }
+ tevent_req_set_callback(subreq, kdc_tcp_call_loop, kdc_conn);
+}
+
+static void kdc_tcp_call_proxy_done(struct tevent_req *subreq)
+{
+ struct kdc_tcp_call *call = tevent_req_callback_data(subreq,
+ struct kdc_tcp_call);
+ struct kdc_tcp_connection *kdc_conn = call->kdc_conn;
+ NTSTATUS status;
+
+ status = kdc_tcp_proxy_recv(subreq, call, &call->out);
+ TALLOC_FREE(subreq);
+ if (!NT_STATUS_IS_OK(status)) {
+ /* generate an error packet */
+ status = kdc_proxy_unavailable_error(kdc_conn->kdc_socket->kdc,
+ call, &call->out);
+ }
+
+ if (!NT_STATUS_IS_OK(status)) {
+ const char *reason;
+
+ reason = talloc_asprintf(call, "kdc_tcp_call_proxy_done: "
+ "kdc_proxy_unavailable_error - %s",
+ nt_errstr(status));
+ if (!reason) {
+ reason = "kdc_tcp_call_proxy_done: kdc_proxy_unavailable_error() failed";
+ }
+
+ kdc_tcp_terminate_connection(call->kdc_conn, reason);
+ return;
+ }
+
/* First add the length of the out buffer */
RSIVAL(call->out_hdr, 0, call->out.length);
- call->out_iov[0].iov_base = call->out_hdr;
+ call->out_iov[0].iov_base = (char *) call->out_hdr;
call->out_iov[0].iov_len = 4;
- call->out_iov[1].iov_base = call->out.data;
+ call->out_iov[1].iov_base = (char *) call->out.data;
call->out_iov[1].iov_len = call->out.length;
subreq = tstream_writev_queue_send(call,
TALLOC_FREE(conn->event.fde);
- rc = tstream_bsd_existing_socket(kdc_conn->tstream,
+ rc = tstream_bsd_existing_socket(kdc_conn,
socket_get_fd(conn->socket),
&kdc_conn->tstream);
if (rc < 0) {
};
struct kdc_udp_call {
+ struct kdc_udp_socket *sock;
struct tsocket_address *src;
DATA_BLOB in;
DATA_BLOB out;
};
+static void kdc_udp_call_proxy_done(struct tevent_req *subreq);
static void kdc_udp_call_sendto_done(struct tevent_req *subreq);
static void kdc_udp_call_loop(struct tevent_req *subreq)
uint8_t *buf;
ssize_t len;
int sys_errno;
- bool ok;
+ enum kdc_process_ret ret;
call = talloc(sock, struct kdc_udp_call);
if (call == NULL) {
talloc_free(call);
goto done;
}
+ call->sock = sock;
len = tdgram_recvfrom_recv(subreq, &sys_errno,
call, &buf, &call->src);
tsocket_address_string(call->src, call)));
/* Call krb5 */
- ok = sock->kdc_socket->process(sock->kdc_socket->kdc,
+ ret = sock->kdc_socket->process(sock->kdc_socket->kdc,
call,
&call->in,
&call->out,
call->src,
sock->kdc_socket->local_address,
1 /* Datagram */);
- if (!ok) {
+ if (ret == KDC_PROCESS_FAILED) {
talloc_free(call);
goto done;
}
+ if (ret == KDC_PROCESS_PROXY) {
+ uint16_t port;
+
+ if (!sock->kdc_socket->kdc->am_rodc) {
+ DEBUG(0,("kdc_udp_call_loop: proxying requested when not RODC"));
+ talloc_free(call);
+ goto done;
+ }
+
+ port = tsocket_address_inet_port(sock->kdc_socket->local_address);
+
+ subreq = kdc_udp_proxy_send(call,
+ sock->kdc_socket->kdc->task->event_ctx,
+ sock->kdc_socket->kdc,
+ port,
+ call->in);
+ if (subreq == NULL) {
+ talloc_free(call);
+ goto done;
+ }
+ tevent_req_set_callback(subreq, kdc_udp_call_proxy_done, call);
+ goto done;
+ }
+
subreq = tdgram_sendto_queue_send(call,
sock->kdc_socket->kdc->task->event_ctx,
sock->dgram,
tevent_req_set_callback(subreq, kdc_udp_call_loop, sock);
}
+static void kdc_udp_call_proxy_done(struct tevent_req *subreq)
+{
+ struct kdc_udp_call *call =
+ tevent_req_callback_data(subreq,
+ struct kdc_udp_call);
+ NTSTATUS status;
+
+ status = kdc_udp_proxy_recv(subreq, call, &call->out);
+ TALLOC_FREE(subreq);
+ if (!NT_STATUS_IS_OK(status)) {
+ /* generate an error packet */
+ status = kdc_proxy_unavailable_error(call->sock->kdc_socket->kdc,
+ call, &call->out);
+ }
+
+ if (!NT_STATUS_IS_OK(status)) {
+ talloc_free(call);
+ return;
+ }
+
+ subreq = tdgram_sendto_queue_send(call,
+ call->sock->kdc_socket->kdc->task->event_ctx,
+ call->sock->dgram,
+ call->sock->send_queue,
+ call->out.data,
+ call->out.length,
+ call->src);
+ if (subreq == NULL) {
+ talloc_free(call);
+ return;
+ }
+
+ tevent_req_set_callback(subreq, kdc_udp_call_sendto_done, call);
+}
+
static void kdc_udp_call_sendto_done(struct tevent_req *subreq)
{
struct kdc_udp_call *call = tevent_req_callback_data(subreq,
const char *name,
const char *address,
uint16_t port,
- kdc_process_fn_t process)
+ kdc_process_fn_t process,
+ bool udp_only)
{
struct kdc_socket *kdc_socket;
struct kdc_udp_socket *kdc_udp_socket;
return status;
}
- status = stream_setup_socket(kdc->task->event_ctx,
- kdc->task->lp_ctx,
- model_ops,
- &kdc_tcp_stream_ops,
- "ip", address, &port,
- lp_socket_options(kdc->task->lp_ctx),
- kdc_socket);
- if (!NT_STATUS_IS_OK(status)) {
- DEBUG(0,("Failed to bind to %s:%u TCP - %s\n",
- address, port, nt_errstr(status)));
- talloc_free(kdc_socket);
- return status;
+ if (!udp_only) {
+ status = stream_setup_socket(kdc->task,
+ kdc->task->event_ctx,
+ kdc->task->lp_ctx,
+ model_ops,
+ &kdc_tcp_stream_ops,
+ "ip", address, &port,
+ lpcfg_socket_options(kdc->task->lp_ctx),
+ kdc_socket);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0,("Failed to bind to %s:%u TCP - %s\n",
+ address, port, nt_errstr(status)));
+ talloc_free(kdc_socket);
+ return status;
+ }
}
kdc_udp_socket = talloc(kdc_socket, struct kdc_udp_socket);
TALLOC_CTX *tmp_ctx = talloc_new(kdc);
NTSTATUS status;
int i;
+ uint16_t kdc_port = lpcfg_krb5_port(lp_ctx);
+ uint16_t kpasswd_port = lpcfg_kpasswd_port(lp_ctx);
+ bool done_wildcard = false;
/* 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");
+ model_ops = process_model_startup("single");
if (!model_ops) {
DEBUG(0,("Can't find 'single' process model_ops\n"));
return NT_STATUS_INTERNAL_ERROR;
num_interfaces = iface_count(ifaces);
+ /* if we are allowing incoming packets from any address, then
+ we need to bind to the wildcard address */
+ if (!lpcfg_bind_interfaces_only(lp_ctx)) {
+ if (kdc_port) {
+ status = kdc_add_socket(kdc, model_ops,
+ "kdc", "0.0.0.0", kdc_port,
+ kdc_process, false);
+ NT_STATUS_NOT_OK_RETURN(status);
+ }
+
+ if (kpasswd_port) {
+ status = kdc_add_socket(kdc, model_ops,
+ "kpasswd", "0.0.0.0", kpasswd_port,
+ kpasswdd_process, false);
+ NT_STATUS_NOT_OK_RETURN(status);
+ }
+ done_wildcard = true;
+ }
+
for (i=0; i<num_interfaces; i++) {
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_process);
+ "kdc", address, kdc_port,
+ kdc_process, done_wildcard);
NT_STATUS_NOT_OK_RETURN(status);
}
if (kpasswd_port) {
status = kdc_add_socket(kdc, model_ops,
- "kpasswd", address, kpasswd_port,
- kpasswdd_process);
+ "kpasswd", address, kpasswd_port,
+ kpasswdd_process, done_wildcard);
NT_STATUS_NOT_OK_RETURN(status);
}
}
/* 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_err = ndr_pull_struct_blob(&r->in.generic_request, msg, &pac_validate,
(ndr_pull_flags_fn_t)ndr_pull_PAC_Validate);
if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
return NT_STATUS_INVALID_PARAMETER;
}
ret = krb5_make_principal(kdc->smb_krb5_context->krb5_context, &principal,
- lp_realm(kdc->task->lp_ctx),
- "krbtgt", lp_realm(kdc->task->lp_ctx),
+ lpcfg_realm(kdc->task->lp_ctx),
+ "krbtgt", lpcfg_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);
-
+ ret = kdc->config->db[0]->hdb_fetch_kvno(kdc->smb_krb5_context->krb5_context,
+ kdc->config->db[0],
+ principal,
+ HDB_F_GET_KRBTGT | HDB_F_DECRYPT,
+ 0,
+ &ent);
+
if (ret != 0) {
hdb_free_entry(kdc->smb_krb5_context->krb5_context, &ent);
krb5_free_principal(kdc->smb_krb5_context->krb5_context, principal);
NTSTATUS status;
krb5_error_code ret;
struct interface *ifaces;
+ int ldb_ret;
- switch (lp_server_role(task->lp_ctx)) {
+ switch (lpcfg_server_role(task->lp_ctx)) {
case ROLE_STANDALONE:
task_server_terminate(task, "kdc: no KDC required in standalone configuration", false);
return;
break;
}
- load_interfaces(task, lp_interfaces(task->lp_ctx), &ifaces);
+ load_interfaces(task, lpcfg_interfaces(task->lp_ctx), &ifaces);
if (iface_count(ifaces) == 0) {
task_server_terminate(task, "kdc: no network interfaces configured", false);
task_server_set_title(task, "task[kdc]");
- kdc = talloc(task, struct kdc_server);
+ kdc = talloc_zero(task, struct kdc_server);
if (kdc == NULL) {
task_server_terminate(task, "kdc: out of memory", true);
return;
kdc->task = task;
+
+ /* get a samdb connection */
+ kdc->samdb = samdb_connect(kdc, kdc->task->event_ctx, kdc->task->lp_ctx,
+ system_session(kdc->task->lp_ctx), 0);
+ if (!kdc->samdb) {
+ DEBUG(1,("kdc_task_init: unable to connect to samdb\n"));
+ task_server_terminate(task, "kdc: krb5_init_context samdb connect failed", true);
+ return;
+ }
+
+ ldb_ret = samdb_rodc(kdc->samdb, &kdc->am_rodc);
+ if (ldb_ret != LDB_SUCCESS) {
+ DEBUG(1, ("kdc_task_init: Cannot determine if we are an RODC: %s\n",
+ ldb_errstring(kdc->samdb)));
+ task_server_terminate(task, "kdc: krb5_init_context samdb RODC connect failed", true);
+ return;
+ }
+
+ kdc->proxy_timeout = lpcfg_parm_int(kdc->task->lp_ctx, NULL, "kdc", "proxy timeout", 5);
+
initialize_krb5_error_table();
ret = smb_krb5_init_context(kdc, task->event_ctx, task->lp_ctx, &kdc->smb_krb5_context);
}
kdc->config->num_db = 1;
- 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_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) {
+ kdc->base_ctx = talloc_zero(kdc, struct samba_kdc_base_context);
+ if (!kdc->base_ctx) {
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;
+ kdc->base_ctx->ev_ctx = task->event_ctx;
+ kdc->base_ctx->lp_ctx = task->lp_ctx;
+
+ status = hdb_samba4_create_kdc(kdc->base_ctx,
+ kdc->smb_krb5_context->krb5_context,
+ &kdc->config->db[0]);
+ if (!NT_STATUS_IS_OK(status)) {
+ task_server_terminate(task, "kdc: hdb_samba4_create_kdc (setup KDC database) failed", true);
+ return;
+ }
ret = krb5_plugin_register(kdc->smb_krb5_context->krb5_context,
PLUGIN_TYPE_DATA, "hdb",
return;
}
- krb5_kdc_windc_init(kdc->smb_krb5_context->krb5_context);
+ ret = krb5_kdc_windc_init(kdc->smb_krb5_context->krb5_context);
+
+ if(ret) {
+ task_server_terminate(task, "kdc: failed to init windc plugin", true);
+ return;
+ }
+
+ ret = krb5_kdc_pkinit_config(kdc->smb_krb5_context->krb5_context, kdc->config);
+
+ if(ret) {
+ task_server_terminate(task, "kdc: failed to init kdc pkinit subsystem", true);
+ return;
+ }
/* start listening on the configured network interfaces */
status = kdc_startup_interfaces(kdc, task->lp_ctx, ifaces);
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", true);
+ task_server_terminate(task, "kdc failed to setup monitoring", true);
return;
}
git.samba.org / kai / samba.git / blobdiff