void scavenger_schedule_disconnected(struct files_struct *fsp)
{
NTSTATUS status;
struct server_id self = messaging_server_id(fsp->conn->sconn->msg_ctx);
struct timeval disconnect_time, until;
uint64_t timeout_usec;
struct scavenger_message msg;
DATA_BLOB msg_blob;
struct server_id_buf tmp;
if (fsp->op == NULL) {
return;
}
nttime_to_timeval(&disconnect_time, fsp->op->global->disconnect_time);
timeout_usec = 1000 * fsp->op->global->durable_timeout_msec;
until = timeval_add(&disconnect_time,
timeout_usec / 1000000,
timeout_usec % 1000000);
ZERO_STRUCT(msg);
msg.file_id = fsp->file_id;
msg.open_persistent_id = fsp->op->global->open_persistent_id;
msg.until = timeval_to_nttime(&until);
DEBUG(10, ("smbd: %s mark file %s as disconnected at %s with timeout "
"at %s in %fs\n",
server_id_str_buf(self, &tmp),
file_id_string_tos(&fsp->file_id),
timeval_string(talloc_tos(), &disconnect_time, true),
timeval_string(talloc_tos(), &until, true),
fsp->op->global->durable_timeout_msec/1000.0));
SMB_ASSERT(server_id_is_disconnected(&fsp->op->global->server_id));
SMB_ASSERT(!server_id_equal(&self, &smbd_scavenger_state->parent_id));
SMB_ASSERT(!smbd_scavenger_state->am_scavenger);
msg_blob = data_blob_const(&msg, sizeof(msg));
DEBUG(10, ("send message to scavenger\n"));
status = messaging_send(smbd_scavenger_state->msg,
smbd_scavenger_state->parent_id,
MSG_SMB_SCAVENGER,
&msg_blob);
if (!NT_STATUS_IS_OK(status)) {
struct server_id_buf tmp1, tmp2;
DEBUG(2, ("Failed to send message to parent smbd %s "
"from %s: %s\n",
server_id_str_buf(smbd_scavenger_state->parent_id,
&tmp1),
server_id_str_buf(self, &tmp2),
nt_errstr(status)));
}
}
/**
* Check whether a cookie-stored struct info is the same
* as a given SMB_STRUCT_STAT, as coming with the fsp.
*/
static bool vfs_default_durable_reconnect_check_stat(
struct vfs_default_durable_stat *cookie_st,
SMB_STRUCT_STAT *fsp_st,
const char *name)
{
int ret;
if (cookie_st->st_ex_dev != fsp_st->st_ex_dev) {
DEBUG(1, ("vfs_default_durable_reconnect (%s): "
"stat_ex.%s differs: "
"cookie:%llu != stat:%llu, "
"denying durable reconnect\n",
name,
"st_ex_dev",
(unsigned long long)cookie_st->st_ex_dev,
(unsigned long long)fsp_st->st_ex_dev));
return false;
}
if (cookie_st->st_ex_ino != fsp_st->st_ex_ino) {
DEBUG(1, ("vfs_default_durable_reconnect (%s): "
"stat_ex.%s differs: "
"cookie:%llu != stat:%llu, "
"denying durable reconnect\n",
name,
"st_ex_ino",
(unsigned long long)cookie_st->st_ex_ino,
(unsigned long long)fsp_st->st_ex_ino));
return false;
}
if (cookie_st->st_ex_mode != fsp_st->st_ex_mode) {
DEBUG(1, ("vfs_default_durable_reconnect (%s): "
"stat_ex.%s differs: "
"cookie:%llu != stat:%llu, "
"denying durable reconnect\n",
name,
"st_ex_mode",
(unsigned long long)cookie_st->st_ex_mode,
(unsigned long long)fsp_st->st_ex_mode));
return false;
}
if (cookie_st->st_ex_nlink != fsp_st->st_ex_nlink) {
DEBUG(1, ("vfs_default_durable_reconnect (%s): "
"stat_ex.%s differs: "
"cookie:%llu != stat:%llu, "
"denying durable reconnect\n",
name,
"st_ex_nlink",
(unsigned long long)cookie_st->st_ex_nlink,
(unsigned long long)fsp_st->st_ex_nlink));
return false;
}
if (cookie_st->st_ex_uid != fsp_st->st_ex_uid) {
DEBUG(1, ("vfs_default_durable_reconnect (%s): "
"stat_ex.%s differs: "
"cookie:%llu != stat:%llu, "
"denying durable reconnect\n",
name,
"st_ex_uid",
(unsigned long long)cookie_st->st_ex_uid,
(unsigned long long)fsp_st->st_ex_uid));
return false;
}
if (cookie_st->st_ex_gid != fsp_st->st_ex_gid) {
DEBUG(1, ("vfs_default_durable_reconnect (%s): "
"stat_ex.%s differs: "
"cookie:%llu != stat:%llu, "
"denying durable reconnect\n",
name,
"st_ex_gid",
(unsigned long long)cookie_st->st_ex_gid,
(unsigned long long)fsp_st->st_ex_gid));
return false;
}
if (cookie_st->st_ex_rdev != fsp_st->st_ex_rdev) {
DEBUG(1, ("vfs_default_durable_reconnect (%s): "
"stat_ex.%s differs: "
"cookie:%llu != stat:%llu, "
"denying durable reconnect\n",
name,
"st_ex_rdev",
(unsigned long long)cookie_st->st_ex_rdev,
(unsigned long long)fsp_st->st_ex_rdev));
return false;
}
if (cookie_st->st_ex_size != fsp_st->st_ex_size) {
DEBUG(1, ("vfs_default_durable_reconnect (%s): "
"stat_ex.%s differs: "
"cookie:%llu != stat:%llu, "
"denying durable reconnect\n",
name,
"st_ex_size",
(unsigned long long)cookie_st->st_ex_size,
(unsigned long long)fsp_st->st_ex_size));
return false;
}
ret = timespec_compare(&cookie_st->st_ex_atime,
&fsp_st->st_ex_atime);
if (ret != 0) {
struct timeval tc, ts;
tc = convert_timespec_to_timeval(cookie_st->st_ex_atime);
ts = convert_timespec_to_timeval(fsp_st->st_ex_atime);
DEBUG(1, ("vfs_default_durable_reconnect (%s): "
"stat_ex.%s differs: "
"cookie:'%s' != stat:'%s', "
"denying durable reconnect\n",
name,
"st_ex_atime",
timeval_string(talloc_tos(), &tc, true),
timeval_string(talloc_tos(), &ts, true)));
return false;
}
ret = timespec_compare(&cookie_st->st_ex_mtime,
&fsp_st->st_ex_mtime);
if (ret != 0) {
struct timeval tc, ts;
tc = convert_timespec_to_timeval(cookie_st->st_ex_mtime);
ts = convert_timespec_to_timeval(fsp_st->st_ex_mtime);
DEBUG(1, ("vfs_default_durable_reconnect (%s): "
"stat_ex.%s differs: "
"cookie:'%s' != stat:'%s', "
"denying durable reconnect\n",
name,
"st_ex_mtime",
timeval_string(talloc_tos(), &tc, true),
timeval_string(talloc_tos(), &ts, true)));
return false;
}
ret = timespec_compare(&cookie_st->st_ex_ctime,
&fsp_st->st_ex_ctime);
if (ret != 0) {
struct timeval tc, ts;
tc = convert_timespec_to_timeval(cookie_st->st_ex_ctime);
ts = convert_timespec_to_timeval(fsp_st->st_ex_ctime);
DEBUG(1, ("vfs_default_durable_reconnect (%s): "
"stat_ex.%s differs: "
"cookie:'%s' != stat:'%s', "
"denying durable reconnect\n",
name,
"st_ex_ctime",
timeval_string(talloc_tos(), &tc, true),
timeval_string(talloc_tos(), &ts, true)));
return false;
}
ret = timespec_compare(&cookie_st->st_ex_btime,
&fsp_st->st_ex_btime);
if (ret != 0) {
struct timeval tc, ts;
tc = convert_timespec_to_timeval(cookie_st->st_ex_btime);
ts = convert_timespec_to_timeval(fsp_st->st_ex_btime);
DEBUG(1, ("vfs_default_durable_reconnect (%s): "
"stat_ex.%s differs: "
"cookie:'%s' != stat:'%s', "
"denying durable reconnect\n",
name,
"st_ex_btime",
timeval_string(talloc_tos(), &tc, true),
timeval_string(talloc_tos(), &ts, true)));
return false;
}
if (cookie_st->st_ex_calculated_birthtime !=
fsp_st->st_ex_calculated_birthtime)
{
DEBUG(1, ("vfs_default_durable_reconnect (%s): "
"stat_ex.%s differs: "
"cookie:%llu != stat:%llu, "
"denying durable reconnect\n",
name,
"st_ex_calculated_birthtime",
(unsigned long long)cookie_st->st_ex_calculated_birthtime,
(unsigned long long)fsp_st->st_ex_calculated_birthtime));
return false;
}
if (cookie_st->st_ex_blksize != fsp_st->st_ex_blksize) {
DEBUG(1, ("vfs_default_durable_reconnect (%s): "
"stat_ex.%s differs: "
"cookie:%llu != stat:%llu, "
"denying durable reconnect\n",
name,
"st_ex_blksize",
(unsigned long long)cookie_st->st_ex_blksize,
(unsigned long long)fsp_st->st_ex_blksize));
return false;
}
if (cookie_st->st_ex_blocks != fsp_st->st_ex_blocks) {
DEBUG(1, ("vfs_default_durable_reconnect (%s): "
"stat_ex.%s differs: "
"cookie:%llu != stat:%llu, "
"denying durable reconnect\n",
name,
"st_ex_blocks",
(unsigned long long)cookie_st->st_ex_blocks,
(unsigned long long)fsp_st->st_ex_blocks));
return false;
}
if (cookie_st->st_ex_flags != fsp_st->st_ex_flags) {
DEBUG(1, ("vfs_default_durable_reconnect (%s): "
"stat_ex.%s differs: "
"cookie:%llu != stat:%llu, "
"denying durable reconnect\n",
name,
"st_ex_flags",
(unsigned long long)cookie_st->st_ex_flags,
(unsigned long long)fsp_st->st_ex_flags));
return false;
}
if (cookie_st->st_ex_mask != fsp_st->st_ex_mask) {
DEBUG(1, ("vfs_default_durable_reconnect (%s): "
"stat_ex.%s differs: "
"cookie:%llu != stat:%llu, "
"denying durable reconnect\n",
name,
"st_ex_mask",
(unsigned long long)cookie_st->st_ex_mask,
(unsigned long long)fsp_st->st_ex_mask));
return false;
}
return true;
}
NTSTATUS trust_pw_change(struct netlogon_creds_cli_context *context,
struct messaging_context *msg_ctx,
struct dcerpc_binding_handle *b,
const char *domain,
bool force)
{
TALLOC_CTX *frame = talloc_stackframe();
struct trust_pw_change_state *state;
struct cli_credentials *creds = NULL;
const struct samr_Password *current_nt_hash = NULL;
const struct samr_Password *previous_nt_hash = NULL;
enum netr_SchannelType sec_channel_type = SEC_CHAN_NULL;
time_t pass_last_set_time;
uint32_t old_version = 0;
struct pdb_trusted_domain *td = NULL;
struct timeval g_timeout = { 0, };
int timeout = 0;
struct timeval tv = { 0, };
size_t new_len = DEFAULT_TRUST_ACCOUNT_PASSWORD_LENGTH;
uint8_t new_password_buffer[256 * 2] = { 0, };
char *new_trust_passwd = NULL;
size_t len = 0;
uint32_t new_version = 0;
uint32_t *new_trust_version = NULL;
NTSTATUS status;
bool ok;
state = talloc_zero(frame, struct trust_pw_change_state);
if (state == NULL) {
TALLOC_FREE(frame);
return NT_STATUS_NO_MEMORY;
}
state->g_ctx = g_lock_ctx_init(state, msg_ctx);
if (state->g_ctx == NULL) {
TALLOC_FREE(frame);
return NT_STATUS_NO_MEMORY;
}
state->g_lock_key = talloc_asprintf(state,
"trust_password_change_%s",
domain);
if (state->g_lock_key == NULL) {
TALLOC_FREE(frame);
return NT_STATUS_NO_MEMORY;
}
g_timeout = timeval_current_ofs(10, 0);
status = g_lock_lock(state->g_ctx,
state->g_lock_key,
G_LOCK_WRITE, g_timeout);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(1, ("could not get g_lock on [%s]!\n",
state->g_lock_key));
TALLOC_FREE(frame);
return status;
}
talloc_set_destructor(state, trust_pw_change_state_destructor);
status = pdb_get_trust_credentials(domain, NULL, frame, &creds);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0, ("could not fetch domain creds for domain %s - %s!\n",
domain, nt_errstr(status)));
TALLOC_FREE(frame);
return NT_STATUS_TRUSTED_RELATIONSHIP_FAILURE;
}
current_nt_hash = cli_credentials_get_nt_hash(creds, frame);
if (current_nt_hash == NULL) {
DEBUG(0, ("cli_credentials_get_nt_hash failed for domain %s!\n",
domain));
TALLOC_FREE(frame);
return NT_STATUS_TRUSTED_RELATIONSHIP_FAILURE;
}
old_version = cli_credentials_get_kvno(creds);
pass_last_set_time = cli_credentials_get_password_last_changed_time(creds);
sec_channel_type = cli_credentials_get_secure_channel_type(creds);
new_version = old_version + 1;
switch (sec_channel_type) {
case SEC_CHAN_WKSTA:
case SEC_CHAN_BDC:
break;
case SEC_CHAN_DNS_DOMAIN:
/*
* new_len * 2 = 498 bytes is the largest possible length
* NL_PASSWORD_VERSION consumes the rest of the possible 512 bytes
* and a confounder with at least 2 bytes is required.
*
* Windows uses new_len = 120 => 240 bytes.
*/
new_len = 120;
/* fall through */
case SEC_CHAN_DOMAIN:
status = pdb_get_trusted_domain(frame, domain, &td);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0, ("pdb_get_trusted_domain() failed for domain %s - %s!\n",
domain, nt_errstr(status)));
TALLOC_FREE(frame);
return status;
}
new_trust_version = &new_version;
break;
default:
TALLOC_FREE(frame);
return NT_STATUS_NOT_SUPPORTED;
}
timeout = lp_machine_password_timeout();
if (timeout == 0) {
if (!force) {
DEBUG(10,("machine password never expires\n"));
TALLOC_FREE(frame);
return NT_STATUS_OK;
}
}
tv.tv_sec = pass_last_set_time;
DEBUG(10, ("password last changed %s\n",
timeval_string(talloc_tos(), &tv, false)));
tv.tv_sec += timeout;
DEBUGADD(10, ("password valid until %s\n",
timeval_string(talloc_tos(), &tv, false)));
if (!force && !timeval_expired(&tv)) {
TALLOC_FREE(frame);
return NT_STATUS_OK;
}
/*
* Create a random machine account password
* We create a random buffer and convert that to utf8.
* This is similar to what windows is doing.
*/
generate_secret_buffer(new_password_buffer, new_len * 2);
ok = convert_string_talloc(frame,
CH_UTF16MUNGED, CH_UTF8,
new_password_buffer, new_len * 2,
(void *)&new_trust_passwd, &len);
ZERO_STRUCT(new_password_buffer);
if (!ok) {
DEBUG(0, ("convert_string_talloc failed\n"));
TALLOC_FREE(frame);
return NT_STATUS_NO_MEMORY;
}
/*
* We could use cli_credentials_get_old_nt_hash(creds, frame) to
* set previous_nt_hash.
*
* But we want to check if the dc has our current password and only do
* a change if that's the case. So we keep previous_nt_hash = NULL.
*
* TODO:
* If the previous password is the only password in common with the dc,
* we better skip the password change, or use something like
* ServerTrustPasswordsGet() or netr_ServerGetTrustInfo() to fix our
* local secrets before doing the change.
*/
status = netlogon_creds_cli_auth(context, b,
*current_nt_hash,
previous_nt_hash);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0, ("netlogon_creds_cli_auth for domain %s - %s!\n",
domain, nt_errstr(status)));
TALLOC_FREE(frame);
return status;
}
/*
* Return the result of trying to write the new password
* back into the trust account file.
*/
switch (sec_channel_type) {
case SEC_CHAN_WKSTA:
case SEC_CHAN_BDC:
ok = secrets_store_machine_password(new_trust_passwd, domain, sec_channel_type);
if (!ok) {
DEBUG(0, ("secrets_store_machine_password failed for domain %s!\n",
domain));
TALLOC_FREE(frame);
return NT_STATUS_INTERNAL_DB_CORRUPTION;
}
break;
case SEC_CHAN_DNS_DOMAIN:
case SEC_CHAN_DOMAIN:
/*
* we need to get the sid first for the
* pdb_set_trusteddom_pw call
*/
ok = pdb_set_trusteddom_pw(domain, new_trust_passwd,
&td->security_identifier);
if (!ok) {
DEBUG(0, ("pdb_set_trusteddom_pw() failed for domain %s!\n",
domain));
TALLOC_FREE(frame);
return NT_STATUS_INTERNAL_DB_CORRUPTION;
}
break;
default:
smb_panic("Unsupported secure channel type");
break;
}
DEBUG(1,("%s : %s(%s): Changed password locally\n",
current_timestring(talloc_tos(), false), __func__, domain));
status = netlogon_creds_cli_ServerPasswordSet(context, b,
new_trust_passwd,
new_trust_version);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0,("%s : %s(%s) remote password change set failed - %s\n",
current_timestring(talloc_tos(), false), __func__,
domain, nt_errstr(status)));
TALLOC_FREE(frame);
return status;
}
DEBUG(1,("%s : %s(%s): Changed password remotely.\n",
current_timestring(talloc_tos(), false), __func__, domain));
TALLOC_FREE(frame);
return NT_STATUS_OK;
}
