static NTSTATUS just_change_the_password(struct rpc_pipe_client *cli, TALLOC_CTX *mem_ctx,
const unsigned char orig_trust_passwd_hash[16],
const char *new_trust_pwd_cleartext,
const unsigned char new_trust_passwd_hash[16],
uint32 sec_channel_type)
{
NTSTATUS result;
uint32_t neg_flags = NETLOGON_NEG_AUTH2_ADS_FLAGS;
result = rpccli_netlogon_setup_creds(cli,
cli->cli->desthost, /* server name */
lp_workgroup(), /* domain */
global_myname(), /* client name */
global_myname(), /* machine account name */
orig_trust_passwd_hash,
sec_channel_type,
&neg_flags);
if (!NT_STATUS_IS_OK(result)) {
DEBUG(3,("just_change_the_password: unable to setup creds (%s)!\n",
nt_errstr(result)));
return result;
}
if (neg_flags & NETLOGON_NEG_PASSWORD_SET2) {
result = rpccli_net_srv_pwset2(cli, mem_ctx, global_myname(),
new_trust_pwd_cleartext);
} else {
result = rpccli_net_srv_pwset(cli, mem_ctx, global_myname(),
new_trust_passwd_hash);
}
if (!NT_STATUS_IS_OK(result)) {
DEBUG(0,("just_change_the_password: unable to change password (%s)!\n",
nt_errstr(result)));
}
return result;
}
int net_rpc_join_newstyle(struct net_context *c, int argc, const char **argv)
{
/* libsmb variables */
struct cli_state *cli;
TALLOC_CTX *mem_ctx;
uint32 acb_info = ACB_WSTRUST;
uint32_t neg_flags = NETLOGON_NEG_AUTH2_ADS_FLAGS;
enum netr_SchannelType sec_channel_type;
struct rpc_pipe_client *pipe_hnd = NULL;
struct dcerpc_binding_handle *b = NULL;
/* rpc variables */
struct policy_handle lsa_pol, sam_pol, domain_pol, user_pol;
struct dom_sid *domain_sid;
uint32 user_rid;
/* Password stuff */
char *clear_trust_password = NULL;
struct samr_CryptPassword crypt_pwd;
uchar md4_trust_password[16];
union samr_UserInfo set_info;
/* Misc */
NTSTATUS status, result;
int retval = 1;
const char *domain = NULL;
char *acct_name;
struct lsa_String lsa_acct_name;
uint32 acct_flags=0;
uint32_t access_granted = 0;
union lsa_PolicyInformation *info = NULL;
struct samr_Ids user_rids;
struct samr_Ids name_types;
/* check what type of join */
if (argc >= 0) {
sec_channel_type = get_sec_channel_type(argv[0]);
} else {
sec_channel_type = get_sec_channel_type(NULL);
}
switch (sec_channel_type) {
case SEC_CHAN_WKSTA:
acb_info = ACB_WSTRUST;
break;
case SEC_CHAN_BDC:
acb_info = ACB_SVRTRUST;
break;
#if 0
case SEC_CHAN_DOMAIN:
acb_info = ACB_DOMTRUST;
break;
#endif
default:
DEBUG(0,("secure channel type %d not yet supported\n",
sec_channel_type));
break;
}
/* Make authenticated connection to remote machine */
status = net_make_ipc_connection(c, NET_FLAGS_PDC, &cli);
if (!NT_STATUS_IS_OK(status)) {
return 1;
}
if (!(mem_ctx = talloc_init("net_rpc_join_newstyle"))) {
DEBUG(0, ("Could not initialise talloc context\n"));
goto done;
}
/* Fetch domain sid */
status = cli_rpc_pipe_open_noauth(cli, &ndr_table_lsarpc.syntax_id,
&pipe_hnd);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0, ("Error connecting to LSA pipe. Error was %s\n",
nt_errstr(status) ));
goto done;
}
b = pipe_hnd->binding_handle;
CHECK_RPC_ERR(rpccli_lsa_open_policy(pipe_hnd, mem_ctx, true,
SEC_FLAG_MAXIMUM_ALLOWED,
&lsa_pol),
"error opening lsa policy handle");
CHECK_DCERPC_ERR(dcerpc_lsa_QueryInfoPolicy(b, mem_ctx,
&lsa_pol,
LSA_POLICY_INFO_ACCOUNT_DOMAIN,
&info,
&result),
"error querying info policy");
domain = info->account_domain.name.string;
domain_sid = info->account_domain.sid;
dcerpc_lsa_Close(b, mem_ctx, &lsa_pol, &result);
TALLOC_FREE(pipe_hnd); /* Done with this pipe */
/* Bail out if domain didn't get set. */
if (!domain) {
DEBUG(0, ("Could not get domain name.\n"));
goto done;
}
/* Create domain user */
status = cli_rpc_pipe_open_noauth(cli, &ndr_table_samr.syntax_id,
&pipe_hnd);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0, ("Error connecting to SAM pipe. Error was %s\n",
nt_errstr(status) ));
goto done;
}
b = pipe_hnd->binding_handle;
CHECK_DCERPC_ERR(dcerpc_samr_Connect2(b, mem_ctx,
pipe_hnd->desthost,
SAMR_ACCESS_ENUM_DOMAINS
| SAMR_ACCESS_LOOKUP_DOMAIN,
&sam_pol,
&result),
"could not connect to SAM database");
CHECK_DCERPC_ERR(dcerpc_samr_OpenDomain(b, mem_ctx,
&sam_pol,
SAMR_DOMAIN_ACCESS_LOOKUP_INFO_1
| SAMR_DOMAIN_ACCESS_CREATE_USER
| SAMR_DOMAIN_ACCESS_OPEN_ACCOUNT,
domain_sid,
&domain_pol,
&result),
"could not open domain");
/* Create domain user */
if ((acct_name = talloc_asprintf(mem_ctx, "%s$", global_myname())) == NULL) {
status = NT_STATUS_NO_MEMORY;
goto done;
}
strlower_m(acct_name);
init_lsa_String(&lsa_acct_name, acct_name);
acct_flags = SEC_GENERIC_READ | SEC_GENERIC_WRITE | SEC_GENERIC_EXECUTE |
SEC_STD_WRITE_DAC | SEC_STD_DELETE |
SAMR_USER_ACCESS_SET_PASSWORD |
SAMR_USER_ACCESS_GET_ATTRIBUTES |
SAMR_USER_ACCESS_SET_ATTRIBUTES;
DEBUG(10, ("Creating account with flags: %d\n",acct_flags));
status = dcerpc_samr_CreateUser2(b, mem_ctx,
&domain_pol,
&lsa_acct_name,
acb_info,
acct_flags,
&user_pol,
&access_granted,
&user_rid,
&result);
if (!NT_STATUS_IS_OK(status)) {
goto done;
}
if (!NT_STATUS_IS_OK(result) &&
!NT_STATUS_EQUAL(result, NT_STATUS_USER_EXISTS)) {
status = result;
d_fprintf(stderr,_("Creation of workstation account failed\n"));
/* If NT_STATUS_ACCESS_DENIED then we have a valid
username/password combo but the user does not have
administrator access. */
if (NT_STATUS_V(result) == NT_STATUS_V(NT_STATUS_ACCESS_DENIED))
d_fprintf(stderr, _("User specified does not have "
"administrator privileges\n"));
goto done;
}
/* We *must* do this.... don't ask... */
if (NT_STATUS_IS_OK(result)) {
dcerpc_samr_Close(b, mem_ctx, &user_pol, &result);
}
CHECK_DCERPC_ERR_DEBUG(dcerpc_samr_LookupNames(b, mem_ctx,
&domain_pol,
1,
&lsa_acct_name,
&user_rids,
&name_types,
&result),
("error looking up rid for user %s: %s/%s\n",
acct_name, nt_errstr(status), nt_errstr(result)));
if (user_rids.count != 1) {
status = NT_STATUS_INVALID_NETWORK_RESPONSE;
goto done;
}
if (name_types.count != 1) {
status = NT_STATUS_INVALID_NETWORK_RESPONSE;
goto done;
}
if (name_types.ids[0] != SID_NAME_USER) {
DEBUG(0, ("%s is not a user account (type=%d)\n", acct_name, name_types.ids[0]));
goto done;
}
user_rid = user_rids.ids[0];
/* Open handle on user */
CHECK_DCERPC_ERR_DEBUG(
dcerpc_samr_OpenUser(b, mem_ctx,
&domain_pol,
SEC_FLAG_MAXIMUM_ALLOWED,
user_rid,
&user_pol,
&result),
("could not re-open existing user %s: %s/%s\n",
acct_name, nt_errstr(status), nt_errstr(result)));
/* Create a random machine account password */
clear_trust_password = generate_random_str(talloc_tos(), DEFAULT_TRUST_ACCOUNT_PASSWORD_LENGTH);
E_md4hash(clear_trust_password, md4_trust_password);
/* Set password on machine account */
init_samr_CryptPassword(clear_trust_password,
&cli->user_session_key,
&crypt_pwd);
set_info.info24.password = crypt_pwd;
set_info.info24.password_expired = PASS_DONT_CHANGE_AT_NEXT_LOGON;
CHECK_DCERPC_ERR(dcerpc_samr_SetUserInfo2(b, mem_ctx,
&user_pol,
24,
&set_info,
&result),
"error setting trust account password");
/* Why do we have to try to (re-)set the ACB to be the same as what
we passed in the samr_create_dom_user() call? When a NT
workstation is joined to a domain by an administrator the
acb_info is set to 0x80. For a normal user with "Add
workstations to the domain" rights the acb_info is 0x84. I'm
not sure whether it is supposed to make a difference or not. NT
seems to cope with either value so don't bomb out if the set
userinfo2 level 0x10 fails. -tpot */
set_info.info16.acct_flags = acb_info;
/* Ignoring the return value is necessary for joining a domain
as a normal user with "Add workstation to domain" privilege. */
status = dcerpc_samr_SetUserInfo(b, mem_ctx,
&user_pol,
16,
&set_info,
&result);
dcerpc_samr_Close(b, mem_ctx, &user_pol, &result);
TALLOC_FREE(pipe_hnd); /* Done with this pipe */
/* Now check the whole process from top-to-bottom */
status = cli_rpc_pipe_open_noauth(cli, &ndr_table_netlogon.syntax_id,
&pipe_hnd);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0,("Error connecting to NETLOGON pipe. Error was %s\n",
nt_errstr(status) ));
goto done;
}
status = rpccli_netlogon_setup_creds(pipe_hnd,
cli->desthost, /* server name */
domain, /* domain */
global_myname(), /* client name */
global_myname(), /* machine account name */
md4_trust_password,
sec_channel_type,
&neg_flags);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0, ("Error in domain join verification (credential setup failed): %s\n\n",
nt_errstr(status)));
if ( NT_STATUS_EQUAL(status, NT_STATUS_ACCESS_DENIED) &&
(sec_channel_type == SEC_CHAN_BDC) ) {
d_fprintf(stderr, _("Please make sure that no computer "
"account\nnamed like this machine "
"(%s) exists in the domain\n"),
global_myname());
}
goto done;
}
/* We can only check the schannel connection if the client is allowed
to do this and the server supports it. If not, just assume success
(after all the rpccli_netlogon_setup_creds() succeeded, and we'll
do the same again (setup creds) in net_rpc_join_ok(). JRA. */
if (lp_client_schannel() && (neg_flags & NETLOGON_NEG_SCHANNEL)) {
struct rpc_pipe_client *netlogon_schannel_pipe;
status = cli_rpc_pipe_open_schannel_with_key(
cli, &ndr_table_netlogon.syntax_id, NCACN_NP,
DCERPC_AUTH_LEVEL_PRIVACY, domain, &pipe_hnd->dc,
&netlogon_schannel_pipe);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0, ("Error in domain join verification (schannel setup failed): %s\n\n",
nt_errstr(status)));
if ( NT_STATUS_EQUAL(status, NT_STATUS_ACCESS_DENIED) &&
(sec_channel_type == SEC_CHAN_BDC) ) {
d_fprintf(stderr, _("Please make sure that no "
"computer account\nnamed "
"like this machine (%s) "
"exists in the domain\n"),
global_myname());
}
goto done;
}
TALLOC_FREE(netlogon_schannel_pipe);
}
TALLOC_FREE(pipe_hnd);
/* Now store the secret in the secrets database */
strupper_m(CONST_DISCARD(char *, domain));
if (!secrets_store_domain_sid(domain, domain_sid)) {
DEBUG(0, ("error storing domain sid for %s\n", domain));
goto done;
}
if (!secrets_store_machine_password(clear_trust_password, domain, sec_channel_type)) {
DEBUG(0, ("error storing plaintext domain secrets for %s\n", domain));
}
/* double-check, connection from scratch */
status = net_rpc_join_ok(c, domain, cli->desthost, &cli->dest_ss);
retval = NT_STATUS_IS_OK(status) ? 0 : -1;
done:
/* Display success or failure */
if (domain) {
if (retval != 0) {
fprintf(stderr,_("Unable to join domain %s.\n"),domain);
} else {
printf(_("Joined domain %s.\n"),domain);
}
}
cli_shutdown(cli);
TALLOC_FREE(clear_trust_password);
return retval;
}
static NTSTATUS check_netlogond_security(const struct auth_context *auth_context,
void *my_private_data,
TALLOC_CTX *mem_ctx,
const struct auth_usersupplied_info *user_info,
struct auth_serversupplied_info **server_info)
{
TALLOC_CTX *frame = talloc_stackframe();
struct netr_SamInfo3 *info3 = NULL;
struct rpc_pipe_client *p = NULL;
struct pipe_auth_data *auth = NULL;
uint32_t neg_flags = NETLOGON_NEG_AUTH2_ADS_FLAGS;
uint8_t machine_password[16];
struct netlogon_creds_CredentialState *creds;
NTSTATUS schannel_bind_result, status;
struct named_mutex *mutex = NULL;
const char *ncalrpcsock;
DEBUG(10, ("Check auth for: [%s]\n", user_info->mapped.account_name));
ncalrpcsock = lp_parm_const_string(
GLOBAL_SECTION_SNUM, "auth_netlogond", "socket", NULL);
if (ncalrpcsock == NULL) {
ncalrpcsock = talloc_asprintf(talloc_tos(), "%s/%s",
get_dyn_NCALRPCDIR(), "DEFAULT");
}
if (ncalrpcsock == NULL) {
status = NT_STATUS_NO_MEMORY;
goto done;
}
creds = secrets_fetch_local_schannel_creds(talloc_tos());
if (creds == NULL) {
goto new_key;
}
status = netlogond_validate(talloc_tos(), auth_context, ncalrpcsock,
creds, user_info, &info3,
&schannel_bind_result);
DEBUG(10, ("netlogond_validate returned %s\n", nt_errstr(status)));
if (NT_STATUS_IS_OK(status)) {
goto okay;
}
if (NT_STATUS_IS_OK(schannel_bind_result)) {
/*
* This is a real failure from the DC
*/
goto done;
}
new_key:
mutex = grab_named_mutex(talloc_tos(), "LOCAL_SCHANNEL_KEY", 60);
if (mutex == NULL) {
DEBUG(10, ("Could not get mutex LOCAL_SCHANNEL_KEY\n"));
status = NT_STATUS_ACCESS_DENIED;
goto done;
}
DEBUG(10, ("schannel bind failed, setting up new key\n"));
status = rpc_pipe_open_ncalrpc(talloc_tos(), ncalrpcsock,
&ndr_table_netlogon.syntax_id, &p);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(10, ("rpc_pipe_open_ncalrpc failed: %s\n",
nt_errstr(status)));
goto done;
}
status = rpccli_anon_bind_data(p, &auth);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(10, ("rpccli_anon_bind_data failed: %s\n",
nt_errstr(status)));
goto done;
}
status = rpc_pipe_bind(p, auth);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(10, ("rpc_pipe_bind failed: %s\n", nt_errstr(status)));
goto done;
}
status = mymachinepw(machine_password);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(10, ("mymachinepw failed: %s\n", nt_errstr(status)));
goto done;
}
DEBUG(10, ("machinepw "));
dump_data(10, machine_password, 16);
status = rpccli_netlogon_setup_creds(
p, global_myname(), lp_workgroup(), global_myname(),
global_myname(), machine_password, SEC_CHAN_BDC, &neg_flags);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(10, ("rpccli_netlogon_setup_creds failed: %s\n",
nt_errstr(status)));
goto done;
}
secrets_store_local_schannel_creds(p->dc);
/*
* Retry the authentication with the mutex held. This way nobody else
* can step on our toes.
*/
status = netlogond_validate(talloc_tos(), auth_context, ncalrpcsock,
p->dc, user_info, &info3,
&schannel_bind_result);
TALLOC_FREE(p);
DEBUG(10, ("netlogond_validate returned %s\n", nt_errstr(status)));
if (!NT_STATUS_IS_OK(status)) {
goto done;
}
okay:
status = make_server_info_info3(mem_ctx, user_info->client.account_name,
user_info->mapped.domain_name, server_info,
info3);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(10, ("make_server_info_info3 failed: %s\n",
nt_errstr(status)));
TALLOC_FREE(frame);
return status;
}
status = NT_STATUS_OK;
done:
TALLOC_FREE(frame);
return status;
}
static NTSTATUS cmd_netlogon_database_redo(struct rpc_pipe_client *cli,
TALLOC_CTX *mem_ctx, int argc,
const char **argv)
{
NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
NTSTATUS result;
const char *server_name = cli->desthost;
uint32_t neg_flags = NETLOGON_NEG_AUTH2_ADS_FLAGS;
struct netr_Authenticator clnt_creds, srv_cred;
struct netr_DELTA_ENUM_ARRAY *delta_enum_array = NULL;
unsigned char trust_passwd_hash[16];
enum netr_SchannelType sec_channel_type = 0;
struct netr_ChangeLogEntry e;
uint32_t rid = 500;
struct dcerpc_binding_handle *b = cli->binding_handle;
if (argc > 2) {
fprintf(stderr, "Usage: %s <user rid>\n", argv[0]);
return NT_STATUS_OK;
}
if (argc == 2) {
sscanf(argv[1], "%d", &rid);
}
if (!secrets_fetch_trust_account_password(lp_workgroup(),
trust_passwd_hash,
NULL, &sec_channel_type)) {
return NT_STATUS_UNSUCCESSFUL;
}
status = rpccli_netlogon_setup_creds(cli,
server_name, /* server name */
lp_workgroup(), /* domain */
lp_netbios_name(), /* client name */
lp_netbios_name(), /* machine account name */
trust_passwd_hash,
sec_channel_type,
&neg_flags);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
netlogon_creds_client_authenticator(cli->dc, &clnt_creds);
ZERO_STRUCT(e);
e.object_rid = rid;
e.db_index = SAM_DATABASE_DOMAIN;
e.delta_type = NETR_DELTA_USER;
status = dcerpc_netr_DatabaseRedo(b, mem_ctx,
server_name,
lp_netbios_name(),
&clnt_creds,
&srv_cred,
e,
0, /* is calculated automatically */
&delta_enum_array,
&result);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
if (!netlogon_creds_client_check(cli->dc, &srv_cred.cred)) {
DEBUG(0,("credentials chain check failed\n"));
return NT_STATUS_ACCESS_DENIED;
}
return result;
}
NTSTATUS rpccli_netlogon_set_trust_password(struct rpc_pipe_client *cli,
TALLOC_CTX *mem_ctx,
const char *account_name,
const unsigned char orig_trust_passwd_hash[16],
const char *new_trust_pwd_cleartext,
const unsigned char new_trust_passwd_hash[16],
enum netr_SchannelType sec_channel_type)
{
NTSTATUS result, status;
struct netr_Authenticator clnt_creds, srv_cred;
struct dcerpc_binding_handle *b = cli->binding_handle;
if (!cli->dc) {
uint32_t neg_flags = NETLOGON_NEG_AUTH2_ADS_FLAGS;
result = rpccli_netlogon_setup_creds(cli,
cli->desthost, /* server name */
lp_workgroup(), /* domain */
lp_netbios_name(), /* client name */
account_name, /* machine account name */
orig_trust_passwd_hash,
sec_channel_type,
&neg_flags);
if (!NT_STATUS_IS_OK(result)) {
DEBUG(3,("rpccli_netlogon_set_trust_password: unable to setup creds (%s)!\n",
nt_errstr(result)));
return result;
}
}
netlogon_creds_client_authenticator(cli->dc, &clnt_creds);
if (cli->dc->negotiate_flags & NETLOGON_NEG_PASSWORD_SET2) {
struct netr_CryptPassword new_password;
uint32_t old_timeout;
init_netr_CryptPassword(new_trust_pwd_cleartext,
cli->dc,
&new_password);
old_timeout = dcerpc_binding_handle_set_timeout(b, 600000);
status = dcerpc_netr_ServerPasswordSet2(b, mem_ctx,
cli->srv_name_slash,
cli->dc->account_name,
sec_channel_type,
cli->dc->computer_name,
&clnt_creds,
&srv_cred,
&new_password,
&result);
dcerpc_binding_handle_set_timeout(b, old_timeout);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0,("dcerpc_netr_ServerPasswordSet2 failed: %s\n",
nt_errstr(status)));
return status;
}
} else {
struct samr_Password new_password;
uint32_t old_timeout;
memcpy(new_password.hash, new_trust_passwd_hash, sizeof(new_password.hash));
netlogon_creds_des_encrypt(cli->dc, &new_password);
old_timeout = dcerpc_binding_handle_set_timeout(b, 600000);
status = dcerpc_netr_ServerPasswordSet(b, mem_ctx,
cli->srv_name_slash,
cli->dc->account_name,
sec_channel_type,
cli->dc->computer_name,
&clnt_creds,
&srv_cred,
&new_password,
&result);
dcerpc_binding_handle_set_timeout(b, old_timeout);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0,("dcerpc_netr_ServerPasswordSet failed: %s\n",
nt_errstr(status)));
return status;
}
}
/* Always check returned credentials. */
if (!netlogon_creds_client_check(cli->dc, &srv_cred.cred)) {
DEBUG(0,("credentials chain check failed\n"));
return NT_STATUS_ACCESS_DENIED;
}
if (!NT_STATUS_IS_OK(result)) {
DEBUG(0,("dcerpc_netr_ServerPasswordSet{2} failed: %s\n",
nt_errstr(result)));
return result;
}
return result;
}
