-/*
+/*
Unix SMB/CIFS implementation.
Winbind daemon - pam auth funcions
return NT_STATUS_OK;
}
-/* Return a password structure from a username. */
+/*******************************************************************
+ wrapper around retreiving the trsut account password
+*******************************************************************/
+
+static BOOL get_trust_pw(const char *domain, uint8 ret_pwd[16],
+ time_t *pass_last_set_time, uint32 *channel)
+{
+ DOM_SID sid;
+ char *pwd;
+
+ /* if we are a DC and this is not our domain, then lookup an account
+ for the domain trust */
+
+ if ( IS_DC && !strequal(domain, lp_workgroup()) && lp_allow_trusted_domains() )
+ {
+ if ( !secrets_fetch_trusted_domain_password(domain, &pwd, &sid,
+ pass_last_set_time) )
+ {
+ DEBUG(0, ("get_trust_pw: could not fetch trust account "
+ "password for trusted domain %s\n", domain));
+ return False;
+ }
+
+ *channel = SEC_CHAN_DOMAIN;
+ E_md4hash(pwd, ret_pwd);
+ SAFE_FREE(pwd);
+
+ return True;
+ }
+ else /* just get the account for our domain (covers
+ ROLE_DOMAIN_MEMBER as well */
+ {
+ /* get the machine trust account for our domain */
+
+ if ( !secrets_fetch_trust_account_password (lp_workgroup(), ret_pwd,
+ pass_last_set_time, channel) )
+ {
+ DEBUG(0, ("get_trust_pw: could not fetch trust account "
+ "password for my domain %s\n", domain));
+ return False;
+ }
+
+ return True;
+ }
+
+ /* Failure */
+ return False;
+}
+
+/**********************************************************************
+ Authenticate a user with a clear test password
+**********************************************************************/
enum winbindd_result winbindd_pam_auth(struct winbindd_cli_state *state)
{
TALLOC_CTX *mem_ctx = NULL;
DATA_BLOB lm_resp;
DATA_BLOB nt_resp;
+ DOM_CRED ret_creds;
+ int attempts = 0;
+ unsigned char local_lm_response[24];
+ unsigned char local_nt_response[24];
+ const char *contact_domain;
/* Ensure null termination */
state->request.data.auth.user[sizeof(state->request.data.auth.user)-1]='\0';
/* Parse domain and username */
- if (!parse_domain_user(state->request.data.auth.user, name_domain,
- name_user)) {
+ parse_domain_user(state->request.data.auth.user, name_domain, name_user);
+ if ( !name_domain ) {
DEBUG(5,("no domain separator (%s) in username (%s) - failing auth\n", lp_winbind_separator(), state->request.data.auth.user));
result = NT_STATUS_INVALID_PARAMETER;
goto done;
}
- {
- unsigned char local_lm_response[24];
- unsigned char local_nt_response[24];
-
- generate_random_buffer(chal, 8, False);
- SMBencrypt(state->request.data.auth.pass, chal, local_lm_response);
+ /* do password magic */
+
+ generate_random_buffer(chal, 8, False);
+ SMBencrypt(state->request.data.auth.pass, chal, local_lm_response);
- SMBNTencrypt(state->request.data.auth.pass, chal, local_nt_response);
+ SMBNTencrypt(state->request.data.auth.pass, chal, local_nt_response);
- lm_resp = data_blob_talloc(mem_ctx, local_lm_response, sizeof(local_lm_response));
- nt_resp = data_blob_talloc(mem_ctx, local_nt_response, sizeof(local_nt_response));
- }
+ lm_resp = data_blob_talloc(mem_ctx, local_lm_response, sizeof(local_lm_response));
+ nt_resp = data_blob_talloc(mem_ctx, local_nt_response, sizeof(local_nt_response));
- /*
- * Get the machine account password for our primary domain
- */
-
- if (!secrets_fetch_trust_account_password(
- lp_workgroup(), trust_passwd, &last_change_time,
- &sec_channel_type)) {
- DEBUG(0, ("winbindd_pam_auth: could not fetch trust account "
- "password for domain %s\n", lp_workgroup()));
+ if ( !get_trust_pw(name_domain, trust_passwd, &last_change_time, &sec_channel_type) ) {
result = NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
goto done;
}
- ZERO_STRUCT(info3);
+ /* what domain should we contact? */
+
+ if ( IS_DC )
+ contact_domain = name_domain;
+ else
+ contact_domain = lp_workgroup();
+
+ /* check authentication loop */
+
+ do {
+ ZERO_STRUCT(info3);
+ ZERO_STRUCT(ret_creds);
+
+ /* Don't shut this down - it belongs to the connection cache code */
+ result = cm_get_netlogon_cli(contact_domain, trust_passwd,
+ sec_channel_type, False, &cli);
+
+ if (!NT_STATUS_IS_OK(result)) {
+ DEBUG(3, ("could not open handle to NETLOGON pipe\n"));
+ goto done;
+ }
+
+ result = cli_netlogon_sam_network_logon(cli, mem_ctx,
+ &ret_creds,
+ name_user, name_domain,
+ global_myname(), chal,
+ lm_resp, nt_resp,
+ &info3);
+ attempts += 1;
+
+ /* if we get access denied, a possible cuase was that we had and open
+ connection to the DC, but someone changed our machine accoutn password
+ out from underneath us using 'net rpc changetrustpw' */
+
+ if ( NT_STATUS_V(result) == NT_STATUS_V(NT_STATUS_ACCESS_DENIED) ) {
+ DEBUG(3,("winbindd_pam_auth: sam_logon returned ACCESS_DENIED. Maybe the trust account "
+ "password was changed and we didn't know it. Killing connections to domain %s\n",
+ name_domain));
+ winbindd_cm_flush();
+ cli->fd = -1;
+ }
+
+ /* We have to try a second time as cm_get_netlogon_cli
+ might not yet have noticed that the DC has killed
+ our connection. */
+
+ } while ( (attempts < 2) && (cli->fd == -1) );
+
+
+ clnt_deal_with_creds(cli->sess_key, &(cli->clnt_cred), &ret_creds);
+
+ if (NT_STATUS_IS_OK(result)) {
+ netsamlogon_cache_store( cli->mem_ctx, &info3 );
+ wcache_invalidate_samlogon(find_domain_from_name(name_domain), &info3);
+ }
- /* Don't shut this down - it belongs to the connection cache code */
- result = cm_get_netlogon_cli(lp_workgroup(), trust_passwd,
- sec_channel_type,
- &cli);
-
- if (!NT_STATUS_IS_OK(result)) {
- DEBUG(3, ("could not open handle to NETLOGON pipe\n"));
- goto done;
- }
-
- result = cli_netlogon_sam_network_logon(cli, mem_ctx,
- name_user, name_domain,
- global_myname(), chal,
- lm_resp, nt_resp,
- &info3);
- uni_group_cache_store_netlogon(mem_ctx, &info3);
done:
/* give us a more useful (more correct?) error code */
return NT_STATUS_IS_OK(result) ? WINBINDD_OK : WINBINDD_ERROR;
}
-
-/* Challenge Response Authentication Protocol */
+
+/**********************************************************************
+ Challenge Response Authentication Protocol
+**********************************************************************/
enum winbindd_result winbindd_pam_auth_crap(struct winbindd_cli_state *state)
{
TALLOC_CTX *mem_ctx = NULL;
char *user = NULL;
const char *domain = NULL;
- const char *contact_domain;
const char *workstation;
+ const char *contact_domain;
+ DOM_CRED ret_creds;
+ int attempts = 0;
DATA_BLOB lm_resp, nt_resp;
DEBUG(3, ("[%5d]: pam auth crap domain: %s user: %s\n", state->pid,
domain, user));
-
- if (lp_allow_trusted_domains() && (state->request.data.auth_crap.flags & WINBIND_PAM_CONTACT_TRUSTDOM)) {
- contact_domain = domain;
- } else {
- contact_domain = lp_workgroup();
+
+ if ( !get_trust_pw(domain, trust_passwd, &last_change_time, &sec_channel_type) ) {
+ result = NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
+ goto done;
}
if (*state->request.data.auth_crap.workstation) {
lm_resp = data_blob_talloc(mem_ctx, state->request.data.auth_crap.lm_resp, state->request.data.auth_crap.lm_resp_len);
nt_resp = data_blob_talloc(mem_ctx, state->request.data.auth_crap.nt_resp, state->request.data.auth_crap.nt_resp_len);
- /*
- * Get the machine account password for the domain to contact.
- * This is either our own domain for a workstation, or possibly
- * any domain for a PDC with trusted domains.
- */
-
- if (!secrets_fetch_trust_account_password (
- contact_domain, trust_passwd, &last_change_time,
- &sec_channel_type)) {
- DEBUG(0, ("winbindd_pam_auth: could not fetch trust account "
- "password for domain %s\n", contact_domain));
- result = NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
- goto done;
- }
+ /* what domain should we contact? */
+
+ if ( IS_DC )
+ contact_domain = domain;
+ else
+ contact_domain = lp_workgroup();
+
+ do {
+ ZERO_STRUCT(info3);
+ ZERO_STRUCT(ret_creds);
+
+ /* Don't shut this down - it belongs to the connection cache code */
+ result = cm_get_netlogon_cli(contact_domain, trust_passwd, sec_channel_type, False, &cli);
- ZERO_STRUCT(info3);
+ if (!NT_STATUS_IS_OK(result)) {
+ DEBUG(3, ("could not open handle to NETLOGON pipe (error: %s)\n",
+ nt_errstr(result)));
+ goto done;
+ }
- /* Don't shut this down - it belongs to the connection cache code */
- result = cm_get_netlogon_cli(contact_domain, trust_passwd, sec_channel_type, &cli);
+ result = cli_netlogon_sam_network_logon(cli, mem_ctx,
+ &ret_creds,
+ user, domain,
+ workstation,
+ state->request.data.auth_crap.chal,
+ lm_resp, nt_resp,
+ &info3);
+
+ attempts += 1;
+
+ /* if we get access denied, a possible cuase was that we had and open
+ connection to the DC, but someone changed our machine accoutn password
+ out from underneath us using 'net rpc changetrustpw' */
+
+ if ( NT_STATUS_V(result) == NT_STATUS_V(NT_STATUS_ACCESS_DENIED) ) {
+ DEBUG(3,("winbindd_pam_auth_crap: sam_logon returned ACCESS_DENIED. Maybe the trust account "
+ "password was changed and we didn't know it. Killing connections to domain %s\n",
+ domain));
+ winbindd_cm_flush();
+ cli->fd = -1;
+ }
+
+ /* We have to try a second time as cm_get_netlogon_cli
+ might not yet have noticed that the DC has killed
+ our connection. */
- if (!NT_STATUS_IS_OK(result)) {
- DEBUG(3, ("could not open handle to NETLOGON pipe (error: %s)\n", nt_errstr(result)));
- goto done;
- }
+ } while ( (attempts < 2) && (cli->fd == -1) );
- result = cli_netlogon_sam_network_logon(cli, mem_ctx,
- user, domain,
- workstation, state->request.data.auth_crap.chal,
- lm_resp, nt_resp,
- &info3);
+ clnt_deal_with_creds(cli->sess_key, &(cli->clnt_cred), &ret_creds);
if (NT_STATUS_IS_OK(result)) {
- uni_group_cache_store_netlogon(mem_ctx, &info3);
- if (state->request.data.auth_crap.flags & WINBIND_PAM_INFO3_NDR) {
+ netsamlogon_cache_store( cli->mem_ctx, &info3 );
+ wcache_invalidate_samlogon(find_domain_from_name(domain), &info3);
+
+ if (state->request.flags & WBFLAG_PAM_INFO3_NDR) {
result = append_info3_as_ndr(mem_ctx, state, &info3);
}
-
- if (state->request.data.auth_crap.flags & WINBIND_PAM_NTKEY) {
+
+ if (state->request.flags & WBFLAG_PAM_NTKEY) {
memcpy(state->response.data.auth.nt_session_key, info3.user_sess_key, sizeof(state->response.data.auth.nt_session_key) /* 16 */);
}
- if (state->request.data.auth_crap.flags & WINBIND_PAM_LMKEY) {
+ if (state->request.flags & WBFLAG_PAM_LMKEY) {
memcpy(state->response.data.auth.first_8_lm_hash, info3.padding, sizeof(state->response.data.auth.first_8_lm_hash) /* 8 */);
}
}
if (state == NULL)
return WINBINDD_ERROR;
- if (!parse_domain_user(state->request.data.chauthtok.user, domain,
- user)) {
+ parse_domain_user(state->request.data.chauthtok.user, domain, user);
+ if ( !*domain ) {
result = NT_STATUS_INVALID_PARAMETER;
goto done;
}
/* Get sam handle */
- if (!(hnd = cm_get_sam_handle(domain))) {
+ if ( NT_STATUS_IS_ERR(result = cm_get_sam_handle(domain, &hnd)) ) {
DEBUG(1, ("could not get SAM handle on DC for %s\n", domain));
- result = NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND;
goto done;
}
git.samba.org / ira / wip.git / blobdiff