/**
* check whether a serverid is the special placeholder for
* a disconnected client
*/
bool server_id_is_disconnected(const struct server_id *id)
{
struct server_id dis;
SMB_ASSERT(id != NULL);
server_id_set_disconnected(&dis);
return server_id_equal(id, &dis);
}
struct server_id server_id_from_string(uint32_t local_vnn,
const char *pid_string)
{
struct server_id result;
unsigned long long pid;
unsigned int vnn, task_id = 0;
ZERO_STRUCT(result);
/*
* We accept various forms with 1, 2 or 3 component forms
* because the server_id_str() can print different forms, and
* we want backwards compatibility for scripts that may call
* smbclient.
*/
if (sscanf(pid_string, "%u:%llu.%u", &vnn, &pid, &task_id) == 3) {
result.vnn = vnn;
result.pid = pid;
result.task_id = task_id;
} else if (sscanf(pid_string, "%u:%llu", &vnn, &pid) == 2) {
result.vnn = vnn;
result.pid = pid;
} else if (sscanf(pid_string, "%llu.%u", &pid, &task_id) == 2) {
result.vnn = local_vnn;
result.pid = pid;
result.task_id = task_id;
} else if (sscanf(pid_string, "%llu", &pid) == 1) {
result.vnn = local_vnn;
result.pid = pid;
} else if (strcmp(pid_string, "disconnected") ==0) {
server_id_set_disconnected(&result);
} else {
result.vnn = NONCLUSTER_VNN;
result.pid = UINT64_MAX;
}
return result;
}
bool mark_share_mode_disconnected(struct share_mode_lock *lck,
struct files_struct *fsp)
{
struct share_mode_entry entry, *e;
if (lck->data->num_share_modes != 1) {
return false;
}
if (fsp->op == NULL) {
return false;
}
if (!fsp->op->global->durable) {
return false;
}
/* Don't care about the pid owner being correct here - just a search. */
fill_share_mode_entry(&entry, fsp, (uid_t)-1, 0, NO_OPLOCK);
e = find_share_mode_entry(lck->data, &entry);
if (e == NULL) {
return false;
}
DEBUG(10, ("Marking share mode entry disconnected for durable handle\n"));
server_id_set_disconnected(&e->pid);
/*
* On reopen the caller needs to check that
* the client comes with the correct handle.
*/
e->share_file_id = fsp->op->global->open_persistent_id;
lck->data->modified = true;
return true;
}
uint32_t smbXsrv_open_hash(struct smbXsrv_open *_open)
{
uint8_t buf[8+8+8];
uint32_t ret;
TDB_DATA key;
SBVAL(buf, 0, _open->global->open_persistent_id);
SBVAL(buf, 8, _open->global->open_volatile_id);
SBVAL(buf, 16, _open->global->open_time);
key = (TDB_DATA) { .dptr = buf, .dsize = sizeof(buf) };
ret = tdb_jenkins_hash(&key);
if (ret == 0) {
ret = 1;
}
return ret;
}
static NTSTATUS smbXsrv_open_set_replay_cache(struct smbXsrv_open *op)
{
struct GUID *create_guid;
struct GUID_txt_buf buf;
char *guid_string;
struct db_context *db = op->table->local.replay_cache_db_ctx;
NTSTATUS status;
if (!(op->flags & SMBXSRV_OPEN_NEED_REPLAY_CACHE)) {
return NT_STATUS_OK;
}
if (op->flags & SMBXSRV_OPEN_HAVE_REPLAY_CACHE) {
return NT_STATUS_OK;
}
create_guid = &op->global->create_guid;
if (GUID_all_zero(create_guid)) {
return NT_STATUS_OK;
}
guid_string = GUID_buf_string(create_guid, &buf);
if (guid_string == NULL) {
return NT_STATUS_INVALID_PARAMETER;
}
status = dbwrap_store_uint32_bystring(db, guid_string, op->local_id);
if (NT_STATUS_IS_OK(status)) {
op->flags |= SMBXSRV_OPEN_HAVE_REPLAY_CACHE;
op->flags &= ~SMBXSRV_OPEN_NEED_REPLAY_CACHE;
}
return status;
}
static NTSTATUS smbXsrv_open_clear_replay_cache(struct smbXsrv_open *op)
{
struct GUID *create_guid;
struct GUID_txt_buf buf;
char *guid_string;
struct db_context *db;
NTSTATUS status;
if (op->table == NULL) {
return NT_STATUS_OK;
}
db = op->table->local.replay_cache_db_ctx;
if (!(op->flags & SMBXSRV_OPEN_HAVE_REPLAY_CACHE)) {
return NT_STATUS_OK;
}
create_guid = &op->global->create_guid;
if (GUID_all_zero(create_guid)) {
return NT_STATUS_OK;
}
guid_string = GUID_buf_string(create_guid, &buf);
if (guid_string == NULL) {
return NT_STATUS_INVALID_PARAMETER;
}
status = dbwrap_purge_bystring(db, guid_string);
if (NT_STATUS_IS_OK(status)) {
op->flags &= ~SMBXSRV_OPEN_HAVE_REPLAY_CACHE;
}
return status;
}
NTSTATUS smbXsrv_open_update(struct smbXsrv_open *op)
{
struct smbXsrv_open_table *table = op->table;
NTSTATUS status;
if (op->global->db_rec != NULL) {
DEBUG(0, ("smbXsrv_open_update(0x%08x): "
"Called with db_rec != NULL'\n",
op->global->open_global_id));
return NT_STATUS_INTERNAL_ERROR;
}
op->global->db_rec = smbXsrv_open_global_fetch_locked(
table->global.db_ctx,
op->global->open_global_id,
op->global /* TALLOC_CTX */);
if (op->global->db_rec == NULL) {
return NT_STATUS_INTERNAL_DB_ERROR;
}
status = smbXsrv_open_global_store(op->global);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0,("smbXsrv_open_update: "
"global_id (0x%08x) store failed - %s\n",
op->global->open_global_id,
nt_errstr(status)));
return status;
}
status = smbXsrv_open_set_replay_cache(op);
if (!NT_STATUS_IS_OK(status)) {
DBG_ERR("smbXsrv_open_set_replay_cache failed: %s\n",
nt_errstr(status));
return status;
}
if (CHECK_DEBUGLVL(10)) {
struct smbXsrv_openB open_blob;
ZERO_STRUCT(open_blob);
open_blob.version = SMBXSRV_VERSION_0;
open_blob.info.info0 = op;
DEBUG(10,("smbXsrv_open_update: global_id (0x%08x) stored\n",
op->global->open_global_id));
NDR_PRINT_DEBUG(smbXsrv_openB, &open_blob);
}
return NT_STATUS_OK;
}
NTSTATUS smbXsrv_open_close(struct smbXsrv_open *op, NTTIME now)
{
struct smbXsrv_open_table *table;
struct db_record *local_rec = NULL;
struct db_record *global_rec = NULL;
NTSTATUS status;
NTSTATUS error = NT_STATUS_OK;
error = smbXsrv_open_clear_replay_cache(op);
if (!NT_STATUS_IS_OK(error)) {
DBG_ERR("smbXsrv_open_clear_replay_cache failed: %s\n",
nt_errstr(error));
}
if (op->table == NULL) {
return error;
}
table = op->table;
op->table = NULL;
op->status = NT_STATUS_FILE_CLOSED;
op->global->disconnect_time = now;
server_id_set_disconnected(&op->global->server_id);
global_rec = op->global->db_rec;
op->global->db_rec = NULL;
if (global_rec == NULL) {
global_rec = smbXsrv_open_global_fetch_locked(
table->global.db_ctx,
op->global->open_global_id,
op->global /* TALLOC_CTX */);
if (global_rec == NULL) {
error = NT_STATUS_INTERNAL_ERROR;
}
}
if (global_rec != NULL && op->global->durable) {
/*
* If it is a durable open we need to update the global part
* instead of deleting it
*/
op->global->db_rec = global_rec;
status = smbXsrv_open_global_store(op->global);
if (NT_STATUS_IS_OK(status)) {
/*
* smbXsrv_open_global_store does the free
* of op->global->db_rec
*/
global_rec = NULL;
}
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0,("smbXsrv_open_close(0x%08x)"
"smbXsrv_open_global_store() failed - %s\n",
op->global->open_global_id,
nt_errstr(status)));
error = status;
}
if (NT_STATUS_IS_OK(status) && CHECK_DEBUGLVL(10)) {
struct smbXsrv_openB open_blob;
ZERO_STRUCT(open_blob);
open_blob.version = SMBXSRV_VERSION_0;
open_blob.info.info0 = op;
DEBUG(10,("smbXsrv_open_close(0x%08x): "
"stored disconnect\n",
op->global->open_global_id));
NDR_PRINT_DEBUG(smbXsrv_openB, &open_blob);
}
}
if (global_rec != NULL) {
status = dbwrap_record_delete(global_rec);
if (!NT_STATUS_IS_OK(status)) {
TDB_DATA key = dbwrap_record_get_key(global_rec);
DEBUG(0, ("smbXsrv_open_close(0x%08x): "
"failed to delete global key '%s': %s\n",
op->global->open_global_id,
hex_encode_talloc(global_rec, key.dptr,
key.dsize),
nt_errstr(status)));
error = status;
}
}
TALLOC_FREE(global_rec);
local_rec = op->db_rec;
if (local_rec == NULL) {
local_rec = smbXsrv_open_local_fetch_locked(table->local.db_ctx,
op->local_id,
op /* TALLOC_CTX*/);
if (local_rec == NULL) {
error = NT_STATUS_INTERNAL_ERROR;
}
}
if (local_rec != NULL) {
status = dbwrap_record_delete(local_rec);
if (!NT_STATUS_IS_OK(status)) {
TDB_DATA key = dbwrap_record_get_key(local_rec);
DEBUG(0, ("smbXsrv_open_close(0x%08x): "
"failed to delete local key '%s': %s\n",
op->global->open_global_id,
hex_encode_talloc(local_rec, key.dptr,
key.dsize),
nt_errstr(status)));
error = status;
}
table->local.num_opens -= 1;
}
if (op->db_rec == NULL) {
TALLOC_FREE(local_rec);
}
op->db_rec = NULL;
if (op->compat) {
op->compat->op = NULL;
file_free(NULL, op->compat);
op->compat = NULL;
}
return error;
}
NTSTATUS smb1srv_open_table_init(struct smbXsrv_connection *conn)
{
uint32_t max_opens;
/*
* Allow a range from 1..65534.
*
* With real_max_open_files possible ids,
* truncated to the SMB1 limit of 16-bit.
*
* 0 and 0xFFFF are no valid ids.
*/
max_opens = conn->client->sconn->real_max_open_files;
max_opens = MIN(max_opens, UINT16_MAX - 1);
return smbXsrv_open_table_init(conn, 1, UINT16_MAX - 1, max_opens);
}
struct server_id server_id_from_string(uint32_t local_vnn,
const char *pid_string)
{
struct server_id templ = {
.vnn = NONCLUSTER_VNN, .pid = UINT64_MAX
};
struct server_id result;
int ret;
/*
* We accept various forms with 1, 2 or 3 component forms
* because the server_id_str_buf() can print different forms, and
* we want backwards compatibility for scripts that may call
* smbclient.
*/
result = templ;
ret = sscanf(pid_string, "%"SCNu32":%"SCNu64".%"SCNu32"/%"SCNu64,
&result.vnn, &result.pid, &result.task_id,
&result.unique_id);
if (ret == 4) {
return result;
}
result = templ;
ret = sscanf(pid_string, "%"SCNu32":%"SCNu64".%"SCNu32,
&result.vnn, &result.pid, &result.task_id);
if (ret == 3) {
return result;
}
result = templ;
ret = sscanf(pid_string, "%"SCNu32":%"SCNu64"/%"SCNu64,
&result.vnn, &result.pid, &result.unique_id);
if (ret == 3) {
return result;
}
result = templ;
ret = sscanf(pid_string, "%"SCNu32":%"SCNu64,
&result.vnn, &result.pid);
if (ret == 2) {
return result;
}
result = templ;
ret = sscanf(pid_string, "%"SCNu64".%"SCNu32"/%"SCNu64,
&result.pid, &result.task_id, &result.unique_id);
if (ret == 3) {
result.vnn = local_vnn;
return result;
}
result = templ;
ret = sscanf(pid_string, "%"SCNu64".%"SCNu32,
&result.pid, &result.task_id);
if (ret == 2) {
result.vnn = local_vnn;
return result;
}
result = templ;
ret = sscanf(pid_string, "%"SCNu64"/%"SCNu64,
&result.pid, &result.unique_id);
if (ret == 2) {
result.vnn = local_vnn;
return result;
}
result = templ;
ret = sscanf(pid_string, "%"SCNu64, &result.pid);
if (ret == 1) {
result.vnn = local_vnn;
return result;
}
if (strcmp(pid_string, "disconnected") == 0) {
server_id_set_disconnected(&result);
return result;
}
return templ;
}
NTSTATUS smbXsrv_open_close(struct smbXsrv_open *op, NTTIME now)
{
struct smbXsrv_open_table *table;
struct db_record *local_rec = NULL;
struct db_record *global_rec = NULL;
NTSTATUS status;
NTSTATUS error = NT_STATUS_OK;
if (op->table == NULL) {
return NT_STATUS_OK;
}
table = op->table;
op->table = NULL;
op->status = NT_STATUS_FILE_CLOSED;
op->global->disconnect_time = now;
server_id_set_disconnected(&op->global->server_id);
global_rec = op->global->db_rec;
op->global->db_rec = NULL;
if (global_rec == NULL) {
uint8_t key_buf[SMBXSRV_OPEN_GLOBAL_TDB_KEY_SIZE];
TDB_DATA key;
key = smbXsrv_open_global_id_to_key(
op->global->open_global_id,
key_buf);
global_rec = dbwrap_fetch_locked(table->global.db_ctx,
op->global, key);
if (global_rec == NULL) {
DEBUG(0, ("smbXsrv_open_close(0x%08x): "
"Failed to lock global key '%s'\n",
op->global->open_global_id,
hex_encode_talloc(global_rec, key.dptr,
key.dsize)));
error = NT_STATUS_INTERNAL_ERROR;
}
}
if (global_rec != NULL && op->global->durable) {
/*
* If it is a durable open we need to update the global part
* instead of deleting it
*/
op->global->db_rec = global_rec;
status = smbXsrv_open_global_store(op->global);
if (NT_STATUS_IS_OK(status)) {
/*
* smbXsrv_open_global_store does the free
* of op->global->db_rec
*/
global_rec = NULL;
}
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0,("smbXsrv_open_close(0x%08x)"
"smbXsrv_open_global_store() failed - %s\n",
op->global->open_global_id,
nt_errstr(status)));
error = status;
}
if (NT_STATUS_IS_OK(status) && CHECK_DEBUGLVL(10)) {
struct smbXsrv_openB open_blob;
ZERO_STRUCT(open_blob);
open_blob.version = SMBXSRV_VERSION_0;
open_blob.info.info0 = op;
DEBUG(10,("smbXsrv_open_close(0x%08x): "
"stored disconnect\n",
op->global->open_global_id));
NDR_PRINT_DEBUG(smbXsrv_openB, &open_blob);
}
}
if (global_rec != NULL) {
status = dbwrap_record_delete(global_rec);
if (!NT_STATUS_IS_OK(status)) {
TDB_DATA key = dbwrap_record_get_key(global_rec);
DEBUG(0, ("smbXsrv_open_close(0x%08x): "
"failed to delete global key '%s': %s\n",
op->global->open_global_id,
hex_encode_talloc(global_rec, key.dptr,
key.dsize),
nt_errstr(status)));
error = status;
}
}
TALLOC_FREE(global_rec);
local_rec = op->db_rec;
if (local_rec == NULL) {
uint8_t key_buf[SMBXSRV_OPEN_LOCAL_TDB_KEY_SIZE];
TDB_DATA key;
key = smbXsrv_open_local_id_to_key(op->local_id, key_buf);
local_rec = dbwrap_fetch_locked(table->local.db_ctx,
op, key);
if (local_rec == NULL) {
DEBUG(0, ("smbXsrv_open_close(0x%08x): "
"Failed to lock local key '%s'\n",
op->global->open_global_id,
hex_encode_talloc(local_rec, key.dptr,
key.dsize)));
error = NT_STATUS_INTERNAL_ERROR;
}
}
if (local_rec != NULL) {
status = dbwrap_record_delete(local_rec);
if (!NT_STATUS_IS_OK(status)) {
TDB_DATA key = dbwrap_record_get_key(local_rec);
DEBUG(0, ("smbXsrv_open_close(0x%08x): "
"failed to delete local key '%s': %s\n",
op->global->open_global_id,
hex_encode_talloc(local_rec, key.dptr,
key.dsize),
nt_errstr(status)));
error = status;
}
table->local.num_opens -= 1;
}
if (op->db_rec == NULL) {
TALLOC_FREE(local_rec);
}
op->db_rec = NULL;
if (op->compat) {
op->compat->op = NULL;
file_free(NULL, op->compat);
op->compat = NULL;
}
return error;
}
