#include "includes.h"
#include "system/filesys.h"
+#include <tevent.h>
+#include "lib/util/server_id.h"
#include "smbd/smbd.h"
#include "smbd/globals.h"
#include "dbwrap/dbwrap.h"
#include "dbwrap/dbwrap_rbt.h"
#include "dbwrap/dbwrap_open.h"
+#include "dbwrap/dbwrap_watch.h"
#include "session.h"
#include "auth.h"
#include "auth/gensec/gensec.h"
#include "lib/util/util_tdb.h"
#include "librpc/gen_ndr/ndr_smbXsrv.h"
#include "serverid.h"
+#include "lib/util/tevent_ntstatus.h"
struct smbXsrv_session_table {
struct {
struct db_context *db_ctx;
uint32_t lowest_id;
uint32_t highest_id;
+ uint32_t max_sessions;
uint32_t num_sessions;
} local;
struct {
static struct db_context *smbXsrv_session_global_db_ctx = NULL;
-NTSTATUS smbXsrv_session_global_init(void)
+NTSTATUS smbXsrv_session_global_init(struct messaging_context *msg_ctx)
{
- const char *global_path = NULL;
+ char *global_path = NULL;
+ struct db_context *backend = NULL;
struct db_context *db_ctx = NULL;
if (smbXsrv_session_global_db_ctx != NULL) {
/*
* This contains secret information like session keys!
*/
- global_path = lock_path("smbXsrv_session_global.tdb");
-
- db_ctx = db_open(NULL, global_path,
- 0, /* hash_size */
- TDB_DEFAULT |
- TDB_CLEAR_IF_FIRST |
- TDB_INCOMPATIBLE_HASH,
- O_RDWR | O_CREAT, 0600,
- DBWRAP_LOCK_ORDER_1);
- if (db_ctx == NULL) {
+ global_path = lock_path(talloc_tos(), "smbXsrv_session_global.tdb");
+ if (global_path == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ backend = db_open(NULL, global_path,
+ 0, /* hash_size */
+ TDB_DEFAULT |
+ TDB_CLEAR_IF_FIRST |
+ TDB_INCOMPATIBLE_HASH,
+ O_RDWR | O_CREAT, 0600,
+ DBWRAP_LOCK_ORDER_1,
+ DBWRAP_FLAG_NONE);
+ TALLOC_FREE(global_path);
+ if (backend == NULL) {
NTSTATUS status;
status = map_nt_error_from_unix_common(errno);
return status;
}
+ db_ctx = db_open_watched(NULL, &backend, server_messaging_context());
+ if (db_ctx == NULL) {
+ TALLOC_FREE(backend);
+ return NT_STATUS_NO_MEMORY;
+ }
+
smbXsrv_session_global_db_ctx = db_ctx;
return NT_STATUS_OK;
return NT_STATUS_OK;
}
+static struct db_record *smbXsrv_session_global_fetch_locked(
+ struct db_context *db,
+ uint32_t id,
+ TALLOC_CTX *mem_ctx)
+{
+ TDB_DATA key;
+ uint8_t key_buf[SMBXSRV_SESSION_GLOBAL_TDB_KEY_SIZE];
+ struct db_record *rec = NULL;
+
+ key = smbXsrv_session_global_id_to_key(id, key_buf);
+
+ rec = dbwrap_fetch_locked(db, mem_ctx, key);
+
+ if (rec == NULL) {
+ DBG_DEBUG("Failed to lock global id 0x%08x, key '%s'\n", id,
+ hex_encode_talloc(talloc_tos(), key.dptr, key.dsize));
+ }
+
+ return rec;
+}
+
+static struct db_record *smbXsrv_session_local_fetch_locked(
+ struct db_context *db,
+ uint32_t id,
+ TALLOC_CTX *mem_ctx)
+{
+ TDB_DATA key;
+ uint8_t key_buf[SMBXSRV_SESSION_LOCAL_TDB_KEY_SIZE];
+ struct db_record *rec = NULL;
+
+ key = smbXsrv_session_local_id_to_key(id, key_buf);
+
+ rec = dbwrap_fetch_locked(db, mem_ctx, key);
+
+ if (rec == NULL) {
+ DBG_DEBUG("Failed to lock local id 0x%08x, key '%s'\n", id,
+ hex_encode_talloc(talloc_tos(), key.dptr, key.dsize));
+ }
+
+ return rec;
+}
+
+static void smbXsrv_session_close_loop(struct tevent_req *subreq);
+
static NTSTATUS smbXsrv_session_table_init(struct smbXsrv_connection *conn,
uint32_t lowest_id,
- uint32_t highest_id)
+ uint32_t highest_id,
+ uint32_t max_sessions)
{
+ struct smbXsrv_client *client = conn->client;
struct smbXsrv_session_table *table;
NTSTATUS status;
+ struct tevent_req *subreq;
+ uint64_t max_range;
+
+ if (lowest_id > highest_id) {
+ return NT_STATUS_INTERNAL_ERROR;
+ }
+
+ max_range = highest_id;
+ max_range -= lowest_id;
+ max_range += 1;
- table = talloc_zero(conn, struct smbXsrv_session_table);
+ if (max_sessions > max_range) {
+ return NT_STATUS_INTERNAL_ERROR;
+ }
+
+ table = talloc_zero(client, struct smbXsrv_session_table);
if (table == NULL) {
return NT_STATUS_NO_MEMORY;
}
}
table->local.lowest_id = lowest_id;
table->local.highest_id = highest_id;
+ table->local.max_sessions = max_sessions;
- status = smbXsrv_session_global_init();
+ status = smbXsrv_session_global_init(client->msg_ctx);
if (!NT_STATUS_IS_OK(status)) {
TALLOC_FREE(table);
return status;
table->global.db_ctx = smbXsrv_session_global_db_ctx;
- conn->session_table = table;
+ subreq = messaging_read_send(table,
+ client->raw_ev_ctx,
+ client->msg_ctx,
+ MSG_SMBXSRV_SESSION_CLOSE);
+ if (subreq == NULL) {
+ TALLOC_FREE(table);
+ return NT_STATUS_NO_MEMORY;
+ }
+ tevent_req_set_callback(subreq, smbXsrv_session_close_loop, client);
+
+ client->session_table = table;
return NT_STATUS_OK;
}
+static void smbXsrv_session_close_shutdown_done(struct tevent_req *subreq);
+
+static void smbXsrv_session_close_loop(struct tevent_req *subreq)
+{
+ struct smbXsrv_client *client =
+ tevent_req_callback_data(subreq,
+ struct smbXsrv_client);
+ struct smbXsrv_session_table *table = client->session_table;
+ int ret;
+ struct messaging_rec *rec = NULL;
+ struct smbXsrv_session_closeB close_blob;
+ enum ndr_err_code ndr_err;
+ struct smbXsrv_session_close0 *close_info0 = NULL;
+ struct smbXsrv_session *session = NULL;
+ NTSTATUS status;
+ struct timeval tv = timeval_current();
+ NTTIME now = timeval_to_nttime(&tv);
+
+ ret = messaging_read_recv(subreq, talloc_tos(), &rec);
+ TALLOC_FREE(subreq);
+ if (ret != 0) {
+ goto next;
+ }
+
+ ndr_err = ndr_pull_struct_blob(&rec->buf, rec, &close_blob,
+ (ndr_pull_flags_fn_t)ndr_pull_smbXsrv_session_closeB);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ status = ndr_map_error2ntstatus(ndr_err);
+ DEBUG(1,("smbXsrv_session_close_loop: "
+ "ndr_pull_struct_blob - %s\n",
+ nt_errstr(status)));
+ goto next;
+ }
+
+ DEBUG(10,("smbXsrv_session_close_loop: MSG_SMBXSRV_SESSION_CLOSE\n"));
+ if (DEBUGLVL(10)) {
+ NDR_PRINT_DEBUG(smbXsrv_session_closeB, &close_blob);
+ }
+
+ if (close_blob.version != SMBXSRV_VERSION_0) {
+ DEBUG(0,("smbXsrv_session_close_loop: "
+ "ignore invalid version %u\n", close_blob.version));
+ NDR_PRINT_DEBUG(smbXsrv_session_closeB, &close_blob);
+ goto next;
+ }
+
+ close_info0 = close_blob.info.info0;
+ if (close_info0 == NULL) {
+ DEBUG(0,("smbXsrv_session_close_loop: "
+ "ignore NULL info %u\n", close_blob.version));
+ NDR_PRINT_DEBUG(smbXsrv_session_closeB, &close_blob);
+ goto next;
+ }
+
+ status = smb2srv_session_lookup_client(client,
+ close_info0->old_session_wire_id,
+ now, &session);
+ if (NT_STATUS_EQUAL(status, NT_STATUS_USER_SESSION_DELETED)) {
+ DEBUG(4,("smbXsrv_session_close_loop: "
+ "old_session_wire_id %llu not found\n",
+ (unsigned long long)close_info0->old_session_wire_id));
+ if (DEBUGLVL(4)) {
+ NDR_PRINT_DEBUG(smbXsrv_session_closeB, &close_blob);
+ }
+ goto next;
+ }
+ if (!NT_STATUS_IS_OK(status) &&
+ !NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED) &&
+ !NT_STATUS_EQUAL(status, NT_STATUS_NETWORK_SESSION_EXPIRED)) {
+ DEBUG(1,("smbXsrv_session_close_loop: "
+ "old_session_wire_id %llu - %s\n",
+ (unsigned long long)close_info0->old_session_wire_id,
+ nt_errstr(status)));
+ if (DEBUGLVL(1)) {
+ NDR_PRINT_DEBUG(smbXsrv_session_closeB, &close_blob);
+ }
+ goto next;
+ }
+
+ if (session->global->session_global_id != close_info0->old_session_global_id) {
+ DEBUG(1,("smbXsrv_session_close_loop: "
+ "old_session_wire_id %llu - global %u != %u\n",
+ (unsigned long long)close_info0->old_session_wire_id,
+ session->global->session_global_id,
+ close_info0->old_session_global_id));
+ if (DEBUGLVL(1)) {
+ NDR_PRINT_DEBUG(smbXsrv_session_closeB, &close_blob);
+ }
+ goto next;
+ }
+
+ if (session->global->creation_time != close_info0->old_creation_time) {
+ DEBUG(1,("smbXsrv_session_close_loop: "
+ "old_session_wire_id %llu - "
+ "creation %s (%llu) != %s (%llu)\n",
+ (unsigned long long)close_info0->old_session_wire_id,
+ nt_time_string(rec, session->global->creation_time),
+ (unsigned long long)session->global->creation_time,
+ nt_time_string(rec, close_info0->old_creation_time),
+ (unsigned long long)close_info0->old_creation_time));
+ if (DEBUGLVL(1)) {
+ NDR_PRINT_DEBUG(smbXsrv_session_closeB, &close_blob);
+ }
+ goto next;
+ }
+
+ subreq = smb2srv_session_shutdown_send(session, client->raw_ev_ctx,
+ session, NULL);
+ if (subreq == NULL) {
+ status = NT_STATUS_NO_MEMORY;
+ DEBUG(0, ("smbXsrv_session_close_loop: "
+ "smb2srv_session_shutdown_send(%llu) failed: %s\n",
+ (unsigned long long)session->global->session_wire_id,
+ nt_errstr(status)));
+ if (DEBUGLVL(1)) {
+ NDR_PRINT_DEBUG(smbXsrv_session_closeB, &close_blob);
+ }
+ goto next;
+ }
+ tevent_req_set_callback(subreq,
+ smbXsrv_session_close_shutdown_done,
+ session);
+
+next:
+ TALLOC_FREE(rec);
+
+ subreq = messaging_read_send(table,
+ client->raw_ev_ctx,
+ client->msg_ctx,
+ MSG_SMBXSRV_SESSION_CLOSE);
+ if (subreq == NULL) {
+ const char *r;
+ r = "messaging_read_send(MSG_SMBXSRV_SESSION_CLOSE) failed";
+ exit_server_cleanly(r);
+ return;
+ }
+ tevent_req_set_callback(subreq, smbXsrv_session_close_loop, client);
+}
+
+static void smbXsrv_session_close_shutdown_done(struct tevent_req *subreq)
+{
+ struct smbXsrv_session *session =
+ tevent_req_callback_data(subreq,
+ struct smbXsrv_session);
+ NTSTATUS status;
+
+ status = smb2srv_session_shutdown_recv(subreq);
+ TALLOC_FREE(subreq);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0, ("smbXsrv_session_close_loop: "
+ "smb2srv_session_shutdown_recv(%llu) failed: %s\n",
+ (unsigned long long)session->global->session_wire_id,
+ nt_errstr(status)));
+ }
+
+ status = smbXsrv_session_logoff(session);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0, ("smbXsrv_session_close_loop: "
+ "smbXsrv_session_logoff(%llu) failed: %s\n",
+ (unsigned long long)session->global->session_wire_id,
+ nt_errstr(status)));
+ }
+
+ TALLOC_FREE(session);
+}
+
struct smb1srv_session_local_allocate_state {
const uint32_t lowest_id;
const uint32_t highest_id;
for (i = 0; i < (range / 2); i++) {
uint32_t id;
- uint8_t key_buf[SMBXSRV_SESSION_LOCAL_TDB_KEY_SIZE];
- TDB_DATA key;
TDB_DATA val;
struct db_record *rec = NULL;
id = highest_id;
}
- key = smbXsrv_session_local_id_to_key(id, key_buf);
-
- rec = dbwrap_fetch_locked(db, mem_ctx, key);
+ rec = smbXsrv_session_local_fetch_locked(db, id, mem_ctx);
if (rec == NULL) {
return NT_STATUS_INSUFFICIENT_RESOURCES;
}
if (NT_STATUS_IS_OK(state.status)) {
uint32_t id;
- uint8_t key_buf[SMBXSRV_SESSION_LOCAL_TDB_KEY_SIZE];
- TDB_DATA key;
TDB_DATA val;
struct db_record *rec = NULL;
id = state.useable_id;
- key = smbXsrv_session_local_id_to_key(id, key_buf);
-
- rec = dbwrap_fetch_locked(db, mem_ctx, key);
+ rec = smbXsrv_session_local_fetch_locked(db, id, mem_ctx);
if (rec == NULL) {
return NT_STATUS_INSUFFICIENT_RESOURCES;
}
}
static NTSTATUS smbXsrv_session_local_lookup(struct smbXsrv_session_table *table,
+ /* conn: optional */
+ struct smbXsrv_connection *conn,
uint32_t session_local_id,
NTTIME now,
struct smbXsrv_session **_session)
return NT_STATUS_USER_SESSION_DELETED;
}
+ /*
+ * If a connection is specified check if the session is
+ * valid on the channel.
+ */
+ if (conn != NULL) {
+ struct smbXsrv_channel_global0 *c = NULL;
+
+ status = smbXsrv_session_find_channel(state.session, conn, &c);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
+ }
+
state.session->idle_time = now;
if (!NT_STATUS_IS_OK(state.session->status)) {
bool is_free = false;
bool was_free = false;
uint32_t id;
- uint8_t key_buf[SMBXSRV_SESSION_GLOBAL_TDB_KEY_SIZE];
- TDB_DATA key;
if (i >= min_tries && last_free != 0) {
id = last_free;
id--;
}
- key = smbXsrv_session_global_id_to_key(id, key_buf);
-
- global->db_rec = dbwrap_fetch_locked(db, mem_ctx, key);
+ global->db_rec = smbXsrv_session_global_fetch_locked(db, id,
+ mem_ctx);
if (global->db_rec == NULL) {
talloc_free(global);
return NT_STATUS_INSUFFICIENT_RESOURCES;
hex_encode_talloc(frame, key.dptr, key.dsize),
nt_errstr(status)));
TALLOC_FREE(frame);
+ *is_free = true;
+ if (was_free) {
+ *was_free = true;
+ }
return;
}
global_blob.version));
NDR_PRINT_DEBUG(smbXsrv_session_globalB, &global_blob);
TALLOC_FREE(frame);
+ *is_free = true;
+ if (was_free) {
+ *was_free = true;
+ }
return;
}
exists = serverid_exists(&global->channels[0].server_id);
if (!exists) {
+ struct server_id_buf idbuf;
DEBUG(2,("smbXsrv_session_global_verify_record: "
"key '%s' server_id %s does not exist.\n",
hex_encode_talloc(frame, key.dptr, key.dsize),
- server_id_str(frame, &global->channels[0].server_id)));
+ server_id_str_buf(global->channels[0].server_id,
+ &idbuf)));
if (DEBUGLVL(2)) {
NDR_PRINT_DEBUG(smbXsrv_session_globalB, &global_blob);
}
return NT_STATUS_OK;
}
-static int smbXsrv_session_destructor(struct smbXsrv_session *session)
+struct smb2srv_session_close_previous_state {
+ struct tevent_context *ev;
+ struct smbXsrv_connection *connection;
+ struct dom_sid *current_sid;
+ uint64_t previous_session_id;
+ uint64_t current_session_id;
+ struct db_record *db_rec;
+};
+
+static void smb2srv_session_close_previous_check(struct tevent_req *req);
+static void smb2srv_session_close_previous_modified(struct tevent_req *subreq);
+
+struct tevent_req *smb2srv_session_close_previous_send(TALLOC_CTX *mem_ctx,
+ struct tevent_context *ev,
+ struct smbXsrv_connection *conn,
+ struct auth_session_info *session_info,
+ uint64_t previous_session_id,
+ uint64_t current_session_id)
+{
+ struct tevent_req *req;
+ struct smb2srv_session_close_previous_state *state;
+ uint32_t global_id = previous_session_id & UINT32_MAX;
+ uint64_t global_zeros = previous_session_id & 0xFFFFFFFF00000000LLU;
+ struct smbXsrv_session_table *table = conn->client->session_table;
+ struct security_token *current_token = NULL;
+
+ req = tevent_req_create(mem_ctx, &state,
+ struct smb2srv_session_close_previous_state);
+ if (req == NULL) {
+ return NULL;
+ }
+ state->ev = ev;
+ state->connection = conn;
+ state->previous_session_id = previous_session_id;
+ state->current_session_id = current_session_id;
+
+ if (global_zeros != 0) {
+ tevent_req_done(req);
+ return tevent_req_post(req, ev);
+ }
+
+ if (session_info == NULL) {
+ tevent_req_done(req);
+ return tevent_req_post(req, ev);
+ }
+ current_token = session_info->security_token;
+
+ if (current_token->num_sids > PRIMARY_USER_SID_INDEX) {
+ state->current_sid = ¤t_token->sids[PRIMARY_USER_SID_INDEX];
+ }
+
+ if (state->current_sid == NULL) {
+ tevent_req_done(req);
+ return tevent_req_post(req, ev);
+ }
+
+ if (!security_token_has_nt_authenticated_users(current_token)) {
+ /* TODO */
+ tevent_req_done(req);
+ return tevent_req_post(req, ev);
+ }
+
+ state->db_rec = smbXsrv_session_global_fetch_locked(
+ table->global.db_ctx,
+ global_id,
+ state /* TALLOC_CTX */);
+ if (state->db_rec == NULL) {
+ tevent_req_nterror(req, NT_STATUS_UNSUCCESSFUL);
+ return tevent_req_post(req, ev);
+ }
+
+ smb2srv_session_close_previous_check(req);
+ if (!tevent_req_is_in_progress(req)) {
+ return tevent_req_post(req, ev);
+ }
+
+ return req;
+}
+
+static void smb2srv_session_close_previous_check(struct tevent_req *req)
+{
+ struct smb2srv_session_close_previous_state *state =
+ tevent_req_data(req,
+ struct smb2srv_session_close_previous_state);
+ struct smbXsrv_connection *conn = state->connection;
+ DATA_BLOB blob;
+ struct security_token *previous_token = NULL;
+ struct smbXsrv_session_global0 *global = NULL;
+ enum ndr_err_code ndr_err;
+ struct smbXsrv_session_close0 close_info0;
+ struct smbXsrv_session_closeB close_blob;
+ struct tevent_req *subreq = NULL;
+ NTSTATUS status;
+ bool is_free = false;
+
+ smbXsrv_session_global_verify_record(state->db_rec,
+ &is_free,
+ NULL,
+ state,
+ &global);
+
+ if (is_free) {
+ TALLOC_FREE(state->db_rec);
+ tevent_req_done(req);
+ return;
+ }
+
+ if (global->auth_session_info == NULL) {
+ TALLOC_FREE(state->db_rec);
+ tevent_req_done(req);
+ return;
+ }
+
+ previous_token = global->auth_session_info->security_token;
+
+ if (!security_token_is_sid(previous_token, state->current_sid)) {
+ TALLOC_FREE(state->db_rec);
+ tevent_req_done(req);
+ return;
+ }
+
+ subreq = dbwrap_watched_watch_send(state, state->ev, state->db_rec,
+ (struct server_id){0});
+ if (tevent_req_nomem(subreq, req)) {
+ TALLOC_FREE(state->db_rec);
+ return;
+ }
+ tevent_req_set_callback(subreq,
+ smb2srv_session_close_previous_modified,
+ req);
+
+ close_info0.old_session_global_id = global->session_global_id;
+ close_info0.old_session_wire_id = global->session_wire_id;
+ close_info0.old_creation_time = global->creation_time;
+ close_info0.new_session_wire_id = state->current_session_id;
+
+ ZERO_STRUCT(close_blob);
+ close_blob.version = smbXsrv_version_global_current();
+ close_blob.info.info0 = &close_info0;
+
+ ndr_err = ndr_push_struct_blob(&blob, state, &close_blob,
+ (ndr_push_flags_fn_t)ndr_push_smbXsrv_session_closeB);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ TALLOC_FREE(state->db_rec);
+ status = ndr_map_error2ntstatus(ndr_err);
+ DEBUG(1,("smb2srv_session_close_previous_check: "
+ "old_session[%llu] new_session[%llu] ndr_push - %s\n",
+ (unsigned long long)close_info0.old_session_wire_id,
+ (unsigned long long)close_info0.new_session_wire_id,
+ nt_errstr(status)));
+ tevent_req_nterror(req, status);
+ return;
+ }
+
+ status = messaging_send(conn->client->msg_ctx,
+ global->channels[0].server_id,
+ MSG_SMBXSRV_SESSION_CLOSE, &blob);
+ TALLOC_FREE(state->db_rec);
+ if (tevent_req_nterror(req, status)) {
+ return;
+ }
+
+ TALLOC_FREE(global);
+ return;
+}
+
+static void smb2srv_session_close_previous_modified(struct tevent_req *subreq)
{
+ struct tevent_req *req =
+ tevent_req_callback_data(subreq,
+ struct tevent_req);
+ struct smb2srv_session_close_previous_state *state =
+ tevent_req_data(req,
+ struct smb2srv_session_close_previous_state);
+ uint32_t global_id;
NTSTATUS status;
+ status = dbwrap_watched_watch_recv(subreq, NULL, NULL);
+ TALLOC_FREE(subreq);
+ if (tevent_req_nterror(req, status)) {
+ return;
+ }
+
+ global_id = state->previous_session_id & UINT32_MAX;
+
+ state->db_rec = smbXsrv_session_global_fetch_locked(
+ state->connection->client->session_table->global.db_ctx,
+ global_id, state /* TALLOC_CTX */);
+
+ smb2srv_session_close_previous_check(req);
+}
+
+NTSTATUS smb2srv_session_close_previous_recv(struct tevent_req *req)
+{
+ NTSTATUS status;
+
+ if (tevent_req_is_nterror(req, &status)) {
+ tevent_req_received(req);
+ return status;
+ }
+
+ tevent_req_received(req);
+ return NT_STATUS_OK;
+}
+
+static NTSTATUS smbXsrv_session_clear_and_logoff(struct smbXsrv_session *session)
+{
+ NTSTATUS status;
+ struct smbXsrv_connection *xconn = NULL;
+
+ if (session->client != NULL) {
+ xconn = session->client->connections;
+ }
+
+ for (; xconn != NULL; xconn = xconn->next) {
+ struct smbd_smb2_request *preq;
+
+ for (preq = xconn->smb2.requests; preq != NULL; preq = preq->next) {
+ if (preq->session != session) {
+ continue;
+ }
+
+ preq->session = NULL;
+ /*
+ * If we no longer have a session we can't
+ * sign or encrypt replies.
+ */
+ preq->do_signing = false;
+ preq->do_encryption = false;
+ preq->preauth = NULL;
+ }
+ }
+
status = smbXsrv_session_logoff(session);
+ return status;
+}
+
+static int smbXsrv_session_destructor(struct smbXsrv_session *session)
+{
+ NTSTATUS status;
+
+ status = smbXsrv_session_clear_and_logoff(session);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0, ("smbXsrv_session_destructor: "
"smbXsrv_session_logoff() failed: %s\n",
NTTIME now,
struct smbXsrv_session **_session)
{
- struct smbXsrv_session_table *table = conn->session_table;
- uint32_t max_sessions = table->local.highest_id - table->local.lowest_id;
+ struct smbXsrv_session_table *table = conn->client->session_table;
struct db_record *local_rec = NULL;
struct smbXsrv_session *session = NULL;
void *ptr = NULL;
TDB_DATA val;
struct smbXsrv_session_global0 *global = NULL;
- struct smbXsrv_channel_global0 *channels = NULL;
+ struct smbXsrv_channel_global0 *channel = NULL;
NTSTATUS status;
- if (table->local.num_sessions >= max_sessions) {
+ if (table->local.num_sessions >= table->local.max_sessions) {
return NT_STATUS_INSUFFICIENT_RESOURCES;
}
session->table = table;
session->idle_time = now;
session->status = NT_STATUS_MORE_PROCESSING_REQUIRED;
- session->connection = conn;
+ session->client = conn->client;
status = smbXsrv_session_global_allocate(table->global.db_ctx,
session,
if (conn->protocol >= PROTOCOL_SMB2_02) {
uint64_t id = global->session_global_id;
- uint8_t key_buf[SMBXSRV_SESSION_LOCAL_TDB_KEY_SIZE];
- TDB_DATA key;
global->connection_dialect = conn->smb2.server.dialect;
session->local_id = global->session_global_id;
- key = smbXsrv_session_local_id_to_key(session->local_id, key_buf);
-
- local_rec = dbwrap_fetch_locked(table->local.db_ctx,
- session, key);
+ local_rec = smbXsrv_session_local_fetch_locked(
+ table->local.db_ctx,
+ session->local_id,
+ session /* TALLOC_CTX */);
if (local_rec == NULL) {
TALLOC_FREE(session);
return NT_STATUS_NO_MEMORY;
global->creation_time = now;
global->expiration_time = GENSEC_EXPIRE_TIME_INFINITY;
- global->num_channels = 1;
- channels = talloc_zero_array(global,
- struct smbXsrv_channel_global0,
- global->num_channels);
- if (channels == NULL) {
- TALLOC_FREE(session);
- return NT_STATUS_NO_MEMORY;
- }
- global->channels = channels;
-
- channels[0].server_id = messaging_server_id(conn->msg_ctx);
- channels[0].local_address = tsocket_address_string(conn->local_address,
- channels);
- if (channels[0].local_address == NULL) {
- TALLOC_FREE(session);
- return NT_STATUS_NO_MEMORY;
- }
- channels[0].remote_address = tsocket_address_string(conn->remote_address,
- channels);
- if (channels[0].remote_address == NULL) {
- TALLOC_FREE(session);
- return NT_STATUS_NO_MEMORY;
- }
- channels[0].remote_name = talloc_strdup(channels, conn->remote_hostname);
- if (channels[0].remote_name == NULL) {
+ status = smbXsrv_session_add_channel(session, conn, &channel);
+ if (!NT_STATUS_IS_OK(status)) {
TALLOC_FREE(session);
- return NT_STATUS_NO_MEMORY;
+ return status;
}
- channels[0].signing_key = data_blob_null;
ptr = session;
val = make_tdb_data((uint8_t const *)&ptr, sizeof(ptr));
return NT_STATUS_OK;
}
+NTSTATUS smbXsrv_session_add_channel(struct smbXsrv_session *session,
+ struct smbXsrv_connection *conn,
+ struct smbXsrv_channel_global0 **_c)
+{
+ struct smbXsrv_session_global0 *global = session->global;
+ struct smbXsrv_channel_global0 *c = NULL;
+
+ if (global->num_channels > 31) {
+ /*
+ * Windows 2012 and 2012R2 allow up to 32 channels
+ */
+ return NT_STATUS_INSUFFICIENT_RESOURCES;
+ }
+
+ c = talloc_realloc(global,
+ global->channels,
+ struct smbXsrv_channel_global0,
+ global->num_channels + 1);
+ if (c == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ global->channels = c;
+
+ c = &global->channels[global->num_channels];
+ ZERO_STRUCTP(c);
+
+ c->server_id = messaging_server_id(conn->client->msg_ctx);
+ c->local_address = tsocket_address_string(conn->local_address,
+ global->channels);
+ if (c->local_address == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ c->remote_address = tsocket_address_string(conn->remote_address,
+ global->channels);
+ if (c->remote_address == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ c->remote_name = talloc_strdup(global->channels,
+ conn->remote_hostname);
+ if (c->remote_name == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ c->connection = conn;
+
+ global->num_channels += 1;
+
+ *_c = c;
+ return NT_STATUS_OK;
+}
+
NTSTATUS smbXsrv_session_update(struct smbXsrv_session *session)
{
struct smbXsrv_session_table *table = session->table;
NTSTATUS status;
- uint8_t key_buf[SMBXSRV_SESSION_GLOBAL_TDB_KEY_SIZE];
- TDB_DATA key;
if (session->global->db_rec != NULL) {
DEBUG(0, ("smbXsrv_session_update(0x%08x): "
return NT_STATUS_INTERNAL_ERROR;
}
- key = smbXsrv_session_global_id_to_key(
+ session->global->db_rec = smbXsrv_session_global_fetch_locked(
+ table->global.db_ctx,
session->global->session_global_id,
- key_buf);
-
- session->global->db_rec = dbwrap_fetch_locked(table->global.db_ctx,
- session->global, key);
+ session->global /* TALLOC_CTX */);
if (session->global->db_rec == NULL) {
- DEBUG(0, ("smbXsrv_session_update(0x%08x): "
- "Failed to lock global key '%s'\n",
- session->global->session_global_id,
- hex_encode_talloc(talloc_tos(), key.dptr,
- key.dsize)));
return NT_STATUS_INTERNAL_DB_ERROR;
}
return NT_STATUS_OK;
}
+NTSTATUS smbXsrv_session_find_channel(const struct smbXsrv_session *session,
+ const struct smbXsrv_connection *conn,
+ struct smbXsrv_channel_global0 **_c)
+{
+ uint32_t i;
+
+ for (i=0; i < session->global->num_channels; i++) {
+ struct smbXsrv_channel_global0 *c = &session->global->channels[i];
+
+ if (c->connection == conn) {
+ *_c = c;
+ return NT_STATUS_OK;
+ }
+ }
+
+ return NT_STATUS_USER_SESSION_DELETED;
+}
+
+NTSTATUS smbXsrv_session_find_auth(const struct smbXsrv_session *session,
+ const struct smbXsrv_connection *conn,
+ NTTIME now,
+ struct smbXsrv_session_auth0 **_a)
+{
+ struct smbXsrv_session_auth0 *a;
+
+ for (a = session->pending_auth; a != NULL; a = a->next) {
+ if (a->connection == conn) {
+ if (now != 0) {
+ a->idle_time = now;
+ }
+ *_a = a;
+ return NT_STATUS_OK;
+ }
+ }
+
+ return NT_STATUS_USER_SESSION_DELETED;
+}
+
+static int smbXsrv_session_auth0_destructor(struct smbXsrv_session_auth0 *a)
+{
+ if (a->session == NULL) {
+ return 0;
+ }
+
+ DLIST_REMOVE(a->session->pending_auth, a);
+ a->session = NULL;
+ return 0;
+}
+
+NTSTATUS smbXsrv_session_create_auth(struct smbXsrv_session *session,
+ struct smbXsrv_connection *conn,
+ NTTIME now,
+ uint8_t in_flags,
+ uint8_t in_security_mode,
+ struct smbXsrv_session_auth0 **_a)
+{
+ struct smbXsrv_session_auth0 *a;
+ NTSTATUS status;
+
+ status = smbXsrv_session_find_auth(session, conn, 0, &a);
+ if (NT_STATUS_IS_OK(status)) {
+ return NT_STATUS_INTERNAL_ERROR;
+ }
+
+ a = talloc_zero(session, struct smbXsrv_session_auth0);
+ if (a == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ a->session = session;
+ a->connection = conn;
+ a->in_flags = in_flags;
+ a->in_security_mode = in_security_mode;
+ a->creation_time = now;
+ a->idle_time = now;
+
+ if (conn->protocol >= PROTOCOL_SMB3_10) {
+ a->preauth = talloc(a, struct smbXsrv_preauth);
+ if (a->preauth == NULL) {
+ TALLOC_FREE(session);
+ return NT_STATUS_NO_MEMORY;
+ }
+ *a->preauth = conn->smb2.preauth;
+ }
+
+ talloc_set_destructor(a, smbXsrv_session_auth0_destructor);
+ DLIST_ADD_END(session->pending_auth, a);
+
+ *_a = a;
+ return NT_STATUS_OK;
+}
+
+struct smb2srv_session_shutdown_state {
+ struct tevent_queue *wait_queue;
+};
+
+static void smb2srv_session_shutdown_wait_done(struct tevent_req *subreq);
+
+struct tevent_req *smb2srv_session_shutdown_send(TALLOC_CTX *mem_ctx,
+ struct tevent_context *ev,
+ struct smbXsrv_session *session,
+ struct smbd_smb2_request *current_req)
+{
+ struct tevent_req *req;
+ struct smb2srv_session_shutdown_state *state;
+ struct tevent_req *subreq;
+ struct smbXsrv_connection *xconn = NULL;
+ size_t len = 0;
+
+ /*
+ * Make sure that no new request will be able to use this session.
+ */
+ session->status = NT_STATUS_USER_SESSION_DELETED;
+
+ req = tevent_req_create(mem_ctx, &state,
+ struct smb2srv_session_shutdown_state);
+ if (req == NULL) {
+ return NULL;
+ }
+
+ state->wait_queue = tevent_queue_create(state, "smb2srv_session_shutdown_queue");
+ if (tevent_req_nomem(state->wait_queue, req)) {
+ return tevent_req_post(req, ev);
+ }
+
+ for (xconn = session->client->connections; xconn != NULL; xconn = xconn->next) {
+ struct smbd_smb2_request *preq;
+
+ for (preq = xconn->smb2.requests; preq != NULL; preq = preq->next) {
+ if (preq == current_req) {
+ /* Can't cancel current request. */
+ continue;
+ }
+ if (preq->session != session) {
+ /* Request on different session. */
+ continue;
+ }
+
+ if (!NT_STATUS_IS_OK(xconn->transport.status)) {
+ preq->session = NULL;
+ /*
+ * If we no longer have a session we can't
+ * sign or encrypt replies.
+ */
+ preq->do_signing = false;
+ preq->do_encryption = false;
+ preq->preauth = NULL;
+
+ if (preq->subreq != NULL) {
+ tevent_req_cancel(preq->subreq);
+ }
+ continue;
+ }
+
+ /*
+ * Never cancel anything in a compound
+ * request. Way too hard to deal with
+ * the result.
+ */
+ if (!preq->compound_related && preq->subreq != NULL) {
+ tevent_req_cancel(preq->subreq);
+ }
+
+ /*
+ * Now wait until the request is finished.
+ *
+ * We don't set a callback, as we just want to block the
+ * wait queue and the talloc_free() of the request will
+ * remove the item from the wait queue.
+ */
+ subreq = tevent_queue_wait_send(preq, ev, state->wait_queue);
+ if (tevent_req_nomem(subreq, req)) {
+ return tevent_req_post(req, ev);
+ }
+ }
+ }
+
+ len = tevent_queue_length(state->wait_queue);
+ if (len == 0) {
+ tevent_req_done(req);
+ return tevent_req_post(req, ev);
+ }
+
+ /*
+ * Now we add our own waiter to the end of the queue,
+ * this way we get notified when all pending requests are finished
+ * and send to the socket.
+ */
+ subreq = tevent_queue_wait_send(state, ev, state->wait_queue);
+ if (tevent_req_nomem(subreq, req)) {
+ return tevent_req_post(req, ev);
+ }
+ tevent_req_set_callback(subreq, smb2srv_session_shutdown_wait_done, req);
+
+ return req;
+}
+
+static void smb2srv_session_shutdown_wait_done(struct tevent_req *subreq)
+{
+ struct tevent_req *req =
+ tevent_req_callback_data(subreq,
+ struct tevent_req);
+
+ tevent_queue_wait_recv(subreq);
+ TALLOC_FREE(subreq);
+
+ tevent_req_done(req);
+}
+
+NTSTATUS smb2srv_session_shutdown_recv(struct tevent_req *req)
+{
+ return tevent_req_simple_recv_ntstatus(req);
+}
+
NTSTATUS smbXsrv_session_logoff(struct smbXsrv_session *session)
{
struct smbXsrv_session_table *table;
struct db_record *local_rec = NULL;
struct db_record *global_rec = NULL;
- struct smbXsrv_connection *conn;
+ struct smbd_server_connection *sconn = NULL;
NTSTATUS status;
NTSTATUS error = NT_STATUS_OK;
table = session->table;
session->table = NULL;
- conn = session->connection;
- session->connection = NULL;
+ sconn = session->client->sconn;
+ session->client = NULL;
session->status = NT_STATUS_USER_SESSION_DELETED;
+ if (session->compat) {
+ /*
+ * For SMB2 this is a bit redundant as files are also close
+ * below via smb2srv_tcon_disconnect_all() -> ... ->
+ * smbXsrv_tcon_disconnect() -> close_cnum() ->
+ * file_close_conn().
+ */
+ file_close_user(sconn, session->compat->vuid);
+ }
+
+ if (session->tcon_table != NULL) {
+ /*
+ * Note: We only have a tcon_table for SMB2.
+ */
+ status = smb2srv_tcon_disconnect_all(session);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0, ("smbXsrv_session_logoff(0x%08x): "
+ "smb2srv_tcon_disconnect_all() failed: %s\n",
+ session->global->session_global_id,
+ nt_errstr(status)));
+ error = status;
+ }
+ }
+
+ if (session->compat) {
+ invalidate_vuid(sconn, session->compat->vuid);
+ session->compat = NULL;
+ }
+
global_rec = session->global->db_rec;
session->global->db_rec = NULL;
if (global_rec == NULL) {
- uint8_t key_buf[SMBXSRV_SESSION_GLOBAL_TDB_KEY_SIZE];
- TDB_DATA key;
-
- key = smbXsrv_session_global_id_to_key(
+ global_rec = smbXsrv_session_global_fetch_locked(
+ table->global.db_ctx,
session->global->session_global_id,
- key_buf);
-
- global_rec = dbwrap_fetch_locked(table->global.db_ctx,
- session->global, key);
+ session->global /* TALLOC_CTX */);
if (global_rec == NULL) {
- DEBUG(0, ("smbXsrv_session_logoff(0x%08x): "
- "Failed to lock global key '%s'\n",
- session->global->session_global_id,
- hex_encode_talloc(global_rec, key.dptr,
- key.dsize)));
error = NT_STATUS_INTERNAL_ERROR;
}
}
local_rec = session->db_rec;
if (local_rec == NULL) {
- uint8_t key_buf[SMBXSRV_SESSION_LOCAL_TDB_KEY_SIZE];
- TDB_DATA key;
-
- key = smbXsrv_session_local_id_to_key(session->local_id,
- key_buf);
-
- local_rec = dbwrap_fetch_locked(table->local.db_ctx,
- session, key);
+ local_rec = smbXsrv_session_local_fetch_locked(
+ table->local.db_ctx,
+ session->local_id,
+ session /* TALLOC_CTX */);
if (local_rec == NULL) {
- DEBUG(0, ("smbXsrv_session_logoff(0x%08x): "
- "Failed to lock local key '%s'\n",
- session->global->session_global_id,
- hex_encode_talloc(local_rec, key.dptr,
- key.dsize)));
error = NT_STATUS_INTERNAL_ERROR;
}
}
}
session->db_rec = NULL;
- if (session->compat) {
- file_close_user(conn->sconn, session->compat->vuid);
- }
-
- if (conn->protocol >= PROTOCOL_SMB2_02) {
- status = smb2srv_tcon_disconnect_all(session);
- if (!NT_STATUS_IS_OK(status)) {
- DEBUG(0, ("smbXsrv_session_logoff(0x%08x): "
- "smb2srv_tcon_disconnect_all() failed: %s\n",
- session->global->session_global_id,
- nt_errstr(status)));
- error = status;
- }
- }
-
- if (session->compat) {
- invalidate_vuid(conn->sconn, session->compat->vuid);
- session->compat = NULL;
- }
-
return error;
}
static int smbXsrv_session_logoff_all_callback(struct db_record *local_rec,
void *private_data);
-NTSTATUS smbXsrv_session_logoff_all(struct smbXsrv_connection *conn)
+NTSTATUS smbXsrv_session_logoff_all(struct smbXsrv_client *client)
{
- struct smbXsrv_session_table *table = conn->session_table;
+ struct smbXsrv_session_table *table = client->session_table;
struct smbXsrv_session_logoff_all_state state;
NTSTATUS status;
int count = 0;
session = talloc_get_type_abort(ptr, struct smbXsrv_session);
session->db_rec = local_rec;
- status = smbXsrv_session_logoff(session);
+
+ status = smbXsrv_session_clear_and_logoff(session);
if (!NT_STATUS_IS_OK(status)) {
if (NT_STATUS_IS_OK(state->first_status)) {
state->first_status = status;
NTSTATUS smb1srv_session_table_init(struct smbXsrv_connection *conn)
{
/*
- * Allow a range from 1..65534.
+ * Allow a range from 1..65534 with 65534 values.
*/
- return smbXsrv_session_table_init(conn, 1, UINT16_MAX - 1);
+ return smbXsrv_session_table_init(conn, 1, UINT16_MAX - 1,
+ UINT16_MAX - 1);
}
NTSTATUS smb1srv_session_lookup(struct smbXsrv_connection *conn,
uint16_t vuid, NTTIME now,
struct smbXsrv_session **session)
{
- struct smbXsrv_session_table *table = conn->session_table;
+ struct smbXsrv_session_table *table = conn->client->session_table;
uint32_t local_id = vuid;
- return smbXsrv_session_local_lookup(table, local_id, now, session);
+ return smbXsrv_session_local_lookup(table, conn, local_id, now,
+ session);
}
NTSTATUS smb2srv_session_table_init(struct smbXsrv_connection *conn)
{
/*
- * For now use the same range as SMB1.
- *
- * Allow a range from 1..65534.
+ * Allow a range from 1..4294967294 with 65534 (same as SMB1) values.
*/
- return smbXsrv_session_table_init(conn, 1, UINT16_MAX - 1);
+ return smbXsrv_session_table_init(conn, 1, UINT32_MAX - 1,
+ UINT16_MAX - 1);
}
-NTSTATUS smb2srv_session_lookup(struct smbXsrv_connection *conn,
- uint64_t session_id, NTTIME now,
- struct smbXsrv_session **session)
+static NTSTATUS smb2srv_session_lookup_raw(struct smbXsrv_session_table *table,
+ /* conn: optional */
+ struct smbXsrv_connection *conn,
+ uint64_t session_id, NTTIME now,
+ struct smbXsrv_session **session)
{
- struct smbXsrv_session_table *table = conn->session_table;
uint32_t local_id = session_id & UINT32_MAX;
uint64_t local_zeros = session_id & 0xFFFFFFFF00000000LLU;
return NT_STATUS_USER_SESSION_DELETED;
}
- return smbXsrv_session_local_lookup(table, local_id, now, session);
+ return smbXsrv_session_local_lookup(table, conn, local_id, now,
+ session);
+}
+
+NTSTATUS smb2srv_session_lookup_conn(struct smbXsrv_connection *conn,
+ uint64_t session_id, NTTIME now,
+ struct smbXsrv_session **session)
+{
+ struct smbXsrv_session_table *table = conn->client->session_table;
+ return smb2srv_session_lookup_raw(table, conn, session_id, now,
+ session);
+}
+
+NTSTATUS smb2srv_session_lookup_client(struct smbXsrv_client *client,
+ uint64_t session_id, NTTIME now,
+ struct smbXsrv_session **session)
+{
+ struct smbXsrv_session_table *table = client->session_table;
+ return smb2srv_session_lookup_raw(table, NULL, session_id, now,
+ session);
+}
+
+struct smbXsrv_session_global_traverse_state {
+ int (*fn)(struct smbXsrv_session_global0 *, void *);
+ void *private_data;
+};
+
+static int smbXsrv_session_global_traverse_fn(struct db_record *rec, void *data)
+{
+ int ret = -1;
+ struct smbXsrv_session_global_traverse_state *state =
+ (struct smbXsrv_session_global_traverse_state*)data;
+ TDB_DATA key = dbwrap_record_get_key(rec);
+ TDB_DATA val = dbwrap_record_get_value(rec);
+ DATA_BLOB blob = data_blob_const(val.dptr, val.dsize);
+ struct smbXsrv_session_globalB global_blob;
+ enum ndr_err_code ndr_err;
+ TALLOC_CTX *frame = talloc_stackframe();
+
+ ndr_err = ndr_pull_struct_blob(&blob, frame, &global_blob,
+ (ndr_pull_flags_fn_t)ndr_pull_smbXsrv_session_globalB);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ DEBUG(1,("Invalid record in smbXsrv_session_global.tdb:"
+ "key '%s' ndr_pull_struct_blob - %s\n",
+ hex_encode_talloc(frame, key.dptr, key.dsize),
+ ndr_errstr(ndr_err)));
+ goto done;
+ }
+
+ if (global_blob.version != SMBXSRV_VERSION_0) {
+ DEBUG(1,("Invalid record in smbXsrv_session_global.tdb:"
+ "key '%s' unsupported version - %d\n",
+ hex_encode_talloc(frame, key.dptr, key.dsize),
+ (int)global_blob.version));
+ goto done;
+ }
+
+ global_blob.info.info0->db_rec = rec;
+ ret = state->fn(global_blob.info.info0, state->private_data);
+done:
+ TALLOC_FREE(frame);
+ return ret;
+}
+
+NTSTATUS smbXsrv_session_global_traverse(
+ int (*fn)(struct smbXsrv_session_global0 *, void *),
+ void *private_data)
+{
+
+ NTSTATUS status;
+ int count = 0;
+ struct smbXsrv_session_global_traverse_state state = {
+ .fn = fn,
+ .private_data = private_data,
+ };
+
+ become_root();
+ status = smbXsrv_session_global_init(NULL);
+ if (!NT_STATUS_IS_OK(status)) {
+ unbecome_root();
+ DEBUG(0, ("Failed to initialize session_global: %s\n",
+ nt_errstr(status)));
+ return status;
+ }
+
+ status = dbwrap_traverse_read(smbXsrv_session_global_db_ctx,
+ smbXsrv_session_global_traverse_fn,
+ &state,
+ &count);
+ unbecome_root();
+
+ return status;
}
git.samba.org / nivanova / samba-autobuild / .git / blobdiff