s3:dom_sid Global replace of DOM_SID with struct dom_sid
[abartlet/samba.git/.git] / source3 / winbindd / winbindd_pam.c
index 796bc3eaed7930570e55e89a77baf4ef410165cb..cf5ffdf325bf117913e4a718517e291caef824d8 100644 (file)
 #include "winbindd.h"
 #include "../libcli/auth/libcli_auth.h"
 #include "../librpc/gen_ndr/cli_samr.h"
+#include "rpc_client/cli_samr.h"
+#include "../librpc/gen_ndr/ndr_netlogon.h"
+#include "rpc_client/cli_netlogon.h"
 #include "smb_krb5.h"
+#include "../lib/crypto/arcfour.h"
 
 #undef DBGC_CLASS
 #define DBGC_CLASS DBGC_WINBIND
@@ -121,7 +125,7 @@ static NTSTATUS append_info3_as_ndr(TALLOC_CTX *mem_ctx,
        DATA_BLOB blob;
        enum ndr_err_code ndr_err;
 
-       ndr_err = ndr_push_struct_blob(&blob, mem_ctx, NULL, info3,
+       ndr_err = ndr_push_struct_blob(&blob, mem_ctx, info3,
                                       (ndr_push_flags_fn_t)ndr_push_netr_SamInfo3);
        if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
                DEBUG(0,("append_info3_as_ndr: failed to append\n"));
@@ -192,7 +196,7 @@ static NTSTATUS append_afs_token(TALLOC_CTX *mem_ctx,
                                    "%U", name_user);
 
        {
-               DOM_SID user_sid;
+               struct dom_sid user_sid;
                fstring sidstr;
 
                sid_compose(&user_sid, info3->base.domain_sid,
@@ -248,11 +252,11 @@ static NTSTATUS check_info3_in_group(struct netr_SamInfo3 *info3,
  *    or other NT_STATUS_IS_ERR(status) for other kinds of failure.
  */
 {
-       DOM_SID *require_membership_of_sid;
+       struct dom_sid *require_membership_of_sid;
        size_t num_require_membership_of_sid;
        char *req_sid;
        const char *p;
-       DOM_SID sid;
+       struct dom_sid sid;
        size_t i;
        struct nt_user_token *token;
        TALLOC_CTX *frame = talloc_stackframe();
@@ -522,11 +526,11 @@ static void setup_return_cc_name(struct winbindd_cli_state *state, const char *c
 
 #endif
 
-static uid_t get_uid_from_state(struct winbindd_cli_state *state)
+uid_t get_uid_from_request(struct winbindd_request *request)
 {
        uid_t uid;
 
-       uid = state->request->data.auth.uid;
+       uid = request->data.auth.uid;
 
        if (uid < 0) {
                DEBUG(1,("invalid uid: '%u'\n", (unsigned int)uid));
@@ -535,6 +539,11 @@ static uid_t get_uid_from_state(struct winbindd_cli_state *state)
        return uid;
 }
 
+static uid_t get_uid_from_state(struct winbindd_cli_state *state)
+{
+       return get_uid_from_request(state->request);
+}
+
 /**********************************************************************
  Authenticate a user with a clear text password using Kerberos and fill up
  ccache if required
@@ -558,8 +567,7 @@ static NTSTATUS winbindd_raw_kerberos_login(struct winbindd_domain *domain,
        ADS_STRUCT *ads;
        time_t time_offset = 0;
        bool internal_ccache = true;
-
-       ZERO_STRUCTP(info3);
+       struct PAC_LOGON_INFO *logon_info = NULL;
 
        *info3 = NULL;
 
@@ -617,18 +625,18 @@ static NTSTATUS winbindd_raw_kerberos_login(struct winbindd_domain *domain,
                DEBUG(10,("winbindd_raw_kerberos_login: uid is %d\n", uid));
        }
 
-       result = kerberos_return_info3_from_pac(state->mem_ctx,
-                                               principal_s,
-                                               state->request->data.auth.pass,
-                                               time_offset,
-                                               &ticket_lifetime,
-                                               &renewal_until,
-                                               cc,
-                                               true,
-                                               true,
-                                               WINBINDD_PAM_AUTH_KRB5_RENEW_TIME,
-                                               NULL,
-                                               info3);
+       result = kerberos_return_pac(state->mem_ctx,
+                                    principal_s,
+                                    state->request->data.auth.pass,
+                                    time_offset,
+                                    &ticket_lifetime,
+                                    &renewal_until,
+                                    cc,
+                                    true,
+                                    true,
+                                    WINBINDD_PAM_AUTH_KRB5_RENEW_TIME,
+                                    NULL,
+                                    &logon_info);
        if (!internal_ccache) {
                gain_root_privilege();
        }
@@ -639,6 +647,8 @@ static NTSTATUS winbindd_raw_kerberos_login(struct winbindd_domain *domain,
                goto failed;
        }
 
+       *info3 = &logon_info->info3;
+
        DEBUG(10,("winbindd_raw_kerberos_login: winbindd validated ticket of %s\n",
                principal_s));
 
@@ -752,10 +762,11 @@ static NTSTATUS append_auth_data(struct winbindd_cli_state *state,
                       /* 8 */);
        }
 
-       if (flags & WBFLAG_PAM_INFO3_TEXT) {
-               result = append_info3_as_txt(state->mem_ctx, state, info3);
+       if (flags & WBFLAG_PAM_UNIX_NAME) {
+               result = append_unix_username(state->mem_ctx, state, info3,
+                                             name_domain, name_user);
                if (!NT_STATUS_IS_OK(result)) {
-                       DEBUG(10,("Failed to append INFO3 (TXT): %s\n",
+                       DEBUG(10,("Failed to append Unix Username: %s\n",
                                nt_errstr(result)));
                        return result;
                }
@@ -772,11 +783,10 @@ static NTSTATUS append_auth_data(struct winbindd_cli_state *state,
                }
        }
 
-       if (flags & WBFLAG_PAM_UNIX_NAME) {
-               result = append_unix_username(state->mem_ctx, state, info3,
-                                             name_domain, name_user);
+       if (flags & WBFLAG_PAM_INFO3_TEXT) {
+               result = append_info3_as_txt(state->mem_ctx, state, info3);
                if (!NT_STATUS_IS_OK(result)) {
-                       DEBUG(10,("Failed to append Unix Username: %s\n",
+                       DEBUG(10,("Failed to append INFO3 (TXT): %s\n",
                                nt_errstr(result)));
                        return result;
                }
@@ -795,70 +805,6 @@ static NTSTATUS append_auth_data(struct winbindd_cli_state *state,
        return NT_STATUS_OK;
 }
 
-void winbindd_pam_auth(struct winbindd_cli_state *state)
-{
-       struct winbindd_domain *domain;
-       fstring name_domain, name_user, mapped_user;
-       char *mapped = NULL;
-       NTSTATUS result;
-       NTSTATUS name_map_status = NT_STATUS_UNSUCCESSFUL;
-
-       /* Ensure null termination */
-       state->request->data.auth.user
-               [sizeof(state->request->data.auth.user)-1]='\0';
-
-       /* Ensure null termination */
-       state->request->data.auth.pass
-               [sizeof(state->request->data.auth.pass)-1]='\0';
-
-       DEBUG(3, ("[%5lu]: pam auth %s\n", (unsigned long)state->pid,
-                 state->request->data.auth.user));
-
-       if (!check_request_flags(state->request->flags)) {
-               result = NT_STATUS_INVALID_PARAMETER_MIX;
-               goto done;
-       }
-
-       /* Parse domain and username */
-
-       name_map_status = normalize_name_unmap(state->mem_ctx,
-                                              state->request->data.auth.user,
-                                              &mapped);
-
-       /* If the name normalization didnt' actually do anything,
-          just use the original name */
-
-       if (NT_STATUS_IS_OK(name_map_status)
-           ||NT_STATUS_EQUAL(name_map_status, NT_STATUS_FILE_RENAMED)) {
-               fstrcpy(mapped_user, mapped);
-       } else {
-               fstrcpy(mapped_user, state->request->data.auth.user);
-       }
-
-       if (!canonicalize_username(mapped_user, name_domain, name_user)) {
-               result = NT_STATUS_NO_SUCH_USER;
-               goto done;
-       }
-
-       domain = find_auth_domain(state->request->flags, name_domain);
-
-       if (domain == NULL) {
-               result = NT_STATUS_NO_SUCH_USER;
-               goto done;
-       }
-
-       sendto_domain(state, domain);
-       return;
- done:
-       set_auth_errors(state->response, result);
-       DEBUG(5, ("Plain text authentication for %s returned %s "
-                 "(PAM: %d)\n",
-                 state->request->data.auth.user,
-                 state->response->data.auth.nt_status_string,
-                 state->response->data.auth.pam_error));
-       request_error(state);
-}
-
 static NTSTATUS winbindd_dual_pam_auth_cached(struct winbindd_domain *domain,
                                              struct winbindd_cli_state *state,
                                              struct netr_SamInfo3 **info3)
@@ -866,7 +812,7 @@ static NTSTATUS winbindd_dual_pam_auth_cached(struct winbindd_domain *domain,
        NTSTATUS result = NT_STATUS_LOGON_FAILURE;
        uint16 max_allowed_bad_attempts;
        fstring name_domain, name_user;
-       DOM_SID sid;
+       struct dom_sid sid;
        enum lsa_SidType type;
        uchar new_nt_pass[NT_HASH_LEN];
        const uint8 *cached_nt_pass;
@@ -1096,7 +1042,7 @@ static NTSTATUS winbindd_dual_pam_auth_cached(struct winbindd_domain *domain,
                        DEBUG(10,("winbindd_dual_pam_auth_cached: failed to get password properties.\n"));
                }
 
-               if ((my_info3->base.rid != DOMAIN_USER_RID_ADMIN) ||
+               if ((my_info3->base.rid != DOMAIN_RID_ADMINISTRATOR) ||
                    (password_properties & DOMAIN_PASSWORD_LOCKOUT_ADMINS)) {
                        my_info3->base.acct_flags |= ACB_AUTOLOCK;
                }
@@ -1644,7 +1590,7 @@ process_result:
 
        if (NT_STATUS_IS_OK(result)) {
 
-               DOM_SID user_sid;
+               struct dom_sid user_sid;
 
                /* In all codepaths where result == NT_STATUS_OK info3 must have
                   been initialized. */
@@ -1687,30 +1633,12 @@ process_result:
 
                if ((state->request->flags & WBFLAG_PAM_CACHED_LOGIN)) {
 
-                       /* Store in-memory creds for single-signon using ntlm_auth. */
-                       result = winbindd_add_memory_creds(state->request->data.auth.user,
-                                                       get_uid_from_state(state),
-                                                       state->request->data.auth.pass);
-
-                       if (!NT_STATUS_IS_OK(result)) {
-                               DEBUG(10,("Failed to store memory creds: %s\n", nt_errstr(result)));
-                               goto done;
-                       }
-
                        if (lp_winbind_offline_logon()) {
                                result = winbindd_store_creds(domain,
                                                      state->mem_ctx,
                                                      state->request->data.auth.user,
                                                      state->request->data.auth.pass,
                                                      info3, NULL);
-                               if (!NT_STATUS_IS_OK(result)) {
-
-                                       /* Release refcount. */
-                                       winbindd_delete_memory_creds(state->request->data.auth.user);
-
-                                       DEBUG(10,("Failed to store creds: %s\n", nt_errstr(result)));
-                                       goto done;
-                               }
                        }
                }
 
@@ -1758,77 +1686,6 @@ done:
        return NT_STATUS_IS_OK(result) ? WINBINDD_OK : WINBINDD_ERROR;
 }
 
-
-/**********************************************************************
- Challenge Response Authentication Protocol
-**********************************************************************/
-
-void winbindd_pam_auth_crap(struct winbindd_cli_state *state)
-{
-       struct winbindd_domain *domain = NULL;
-       const char *domain_name = NULL;
-       NTSTATUS result;
-
-       if (!check_request_flags(state->request->flags)) {
-               result = NT_STATUS_INVALID_PARAMETER_MIX;
-               goto done;
-       }
-
-       if (!state->privileged) {
-               DEBUG(2, ("winbindd_pam_auth_crap: non-privileged access "
-                         "denied.  !\n"));
-               DEBUGADD(2, ("winbindd_pam_auth_crap: Ensure permissions "
-                            "on %s are set correctly.\n",
-                            get_winbind_priv_pipe_dir()));
-               /* send a better message than ACCESS_DENIED */
-               fstr_sprintf(state->response->data.auth.error_string,
-                            "winbind client not authorized to use "
-                            "winbindd_pam_auth_crap. Ensure permissions on "
-                            "%s are set correctly.",
-                            get_winbind_priv_pipe_dir());
-               result = NT_STATUS_ACCESS_DENIED;
-               goto done;
-       }
-
-       /* Ensure null termination */
-       state->request->data.auth_crap.user
-               [sizeof(state->request->data.auth_crap.user)-1]=0;
-       state->request->data.auth_crap.domain
-               [sizeof(state->request->data.auth_crap.domain)-1]=0;
-
-       DEBUG(3, ("[%5lu]: pam auth crap domain: [%s] user: %s\n",
-                 (unsigned long)state->pid,
-                 state->request->data.auth_crap.domain,
-                 state->request->data.auth_crap.user));
-
-       if (*state->request->data.auth_crap.domain != '\0') {
-               domain_name = state->request->data.auth_crap.domain;
-       } else if (lp_winbind_use_default_domain()) {
-               domain_name = lp_workgroup();
-       }
-
-       if (domain_name != NULL)
-               domain = find_auth_domain(state->request->flags, domain_name);
-
-       if (domain != NULL) {
-               sendto_domain(state, domain);
-               return;
-       }
-
-       result = NT_STATUS_NO_SUCH_USER;
-
- done:
-       set_auth_errors(state->response, result);
-       DEBUG(5, ("CRAP authentication for %s\\%s returned %s (PAM: %d)\n",
-                 state->request->data.auth_crap.domain,
-                 state->request->data.auth_crap.user,
-                 state->response->data.auth.nt_status_string,
-                 state->response->data.auth.pam_error));
-       request_error(state);
-       return;
-}
-
-
 enum winbindd_result winbindd_dual_pam_auth_crap(struct winbindd_domain *domain,
                                                 struct winbindd_cli_state *state)
 {
@@ -2031,63 +1888,6 @@ done:
        return NT_STATUS_IS_OK(result) ? WINBINDD_OK : WINBINDD_ERROR;
 }
 
-/* Change a user password */
-
-void winbindd_pam_chauthtok(struct winbindd_cli_state *state)
-{
-       fstring domain, user;
-       char *mapped_user;
-       struct winbindd_domain *contact_domain;
-       NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL;
-
-       /* Ensure null termination */
-       state->request->data.chauthtok.user[
-               sizeof(state->request->data.chauthtok.user)-1]='\0';
-
-       DEBUG(3, ("[%5lu]: pam chauthtok %s\n", (unsigned long)state->pid,
-               state->request->data.chauthtok.user));
-
-       /* Setup crap */
-
-       nt_status = normalize_name_unmap(state->mem_ctx,
-                                        state->request->data.chauthtok.user,
-                                        &mapped_user);
-
-       /* Update the chauthtok name if we did any mapping */
-
-       if (NT_STATUS_IS_OK(nt_status) ||
-           NT_STATUS_EQUAL(nt_status, NT_STATUS_FILE_RENAMED))
-       {
-               fstrcpy(state->request->data.chauthtok.user, mapped_user);
-       }
-
-       /* Must pass in state->...chauthtok.user because
-          canonicalize_username() assumes an fstring().  Since
-          we have already copied it (if necessary), this is ok. */
-
-       if (!canonicalize_username(state->request->data.chauthtok.user, domain, user)) {
-               set_auth_errors(state->response, NT_STATUS_NO_SUCH_USER);
-               DEBUG(5, ("winbindd_pam_chauthtok: canonicalize_username %s failed with %s"
-                         "(PAM: %d)\n",
-                         state->request->data.chauthtok.user,
-                         state->response->data.auth.nt_status_string,
-                         state->response->data.auth.pam_error));
-               request_error(state);
-               return;
-       }
-
-       contact_domain = find_domain_from_name(domain);
-       if (!contact_domain) {
-               set_auth_errors(state->response, NT_STATUS_NO_SUCH_USER);
-               DEBUG(3, ("Cannot change password for [%s] -> [%s]\\[%s] as %s is not a trusted domain\n",
-                         state->request->data.chauthtok.user, domain, user, domain));
-               request_error(state);
-               return;
-       }
-
-       sendto_domain(state, contact_domain);
-}
-
 enum winbindd_result winbindd_dual_pam_chauthtok(struct winbindd_domain *contact_domain,
                                                 struct winbindd_cli_state *state)
 {
@@ -2116,6 +1916,53 @@ enum winbindd_result winbindd_dual_pam_chauthtok(struct winbindd_domain *contact
        /* Initialize reject reason */
        state->response->data.auth.reject_reason = Undefined;
 
+       if (strequal(domain, get_global_sam_name())) {
+               struct samr_CryptPassword new_nt_password;
+               struct samr_CryptPassword new_lm_password;
+               struct samr_Password old_nt_hash_enc;
+               struct samr_Password old_lanman_hash_enc;
+               enum samPwdChangeReason rejectReason;
+
+               uchar old_nt_hash[16];
+               uchar old_lanman_hash[16];
+               uchar new_nt_hash[16];
+               uchar new_lanman_hash[16];
+
+               contact_domain = NULL;
+
+               E_md4hash(oldpass, old_nt_hash);
+               E_md4hash(newpass, new_nt_hash);
+
+               if (lp_client_lanman_auth() &&
+                   E_deshash(newpass, new_lanman_hash) &&
+                   E_deshash(oldpass, old_lanman_hash)) {
+
+                       /* E_deshash returns false for 'long' passwords (> 14
+                          DOS chars).  This allows us to match Win2k, which
+                          does not store a LM hash for these passwords (which
+                          would reduce the effective password length to 14) */
+
+                       encode_pw_buffer(new_lm_password.data, newpass, STR_UNICODE);
+                       arcfour_crypt(new_lm_password.data, old_nt_hash, 516);
+                       E_old_pw_hash(new_nt_hash, old_lanman_hash, old_lanman_hash_enc.hash);
+               } else {
+                       ZERO_STRUCT(new_lm_password);
+                       ZERO_STRUCT(old_lanman_hash_enc);
+               }
+
+               encode_pw_buffer(new_nt_password.data, newpass, STR_UNICODE);
+
+               arcfour_crypt(new_nt_password.data, old_nt_hash, 516);
+               E_old_pw_hash(new_nt_hash, old_nt_hash, old_nt_hash_enc.hash);
+
+               result = pass_oem_change(
+                       user,
+                       new_lm_password.data, old_lanman_hash_enc.hash,
+                       new_nt_password.data, old_nt_hash_enc.hash,
+                       &rejectReason);
+               goto done;
+       }
+
        /* Get sam handle */
 
        result = cm_connect_sam(contact_domain, state->mem_ctx, &cli,
@@ -2171,26 +2018,6 @@ enum winbindd_result winbindd_dual_pam_chauthtok(struct winbindd_domain *contact
 done:
 
        if (NT_STATUS_IS_OK(result) && (state->request->flags & WBFLAG_PAM_CACHED_LOGIN)) {
-
-               /* Update the single sign-on memory creds. */
-               result = winbindd_replace_memory_creds(state->request->data.chauthtok.user,
-                                                       newpass);
-
-               /* When we login from gdm or xdm and password expires,
-                * we change password, but there are no memory crendentials
-                * So, winbindd_replace_memory_creds() returns
-                * NT_STATUS_OBJECT_NAME_NOT_FOUND. This is not a failure.
-                * --- BoYang
-                * */
-               if (NT_STATUS_EQUAL(result, NT_STATUS_OBJECT_NAME_NOT_FOUND)) {
-                       result = NT_STATUS_OK;
-               }
-
-               if (!NT_STATUS_IS_OK(result)) {
-                       DEBUG(10,("Failed to replace memory creds: %s\n", nt_errstr(result)));
-                       goto process_result;
-               }
-
                if (lp_winbind_offline_logon()) {
                        result = winbindd_update_creds_by_name(contact_domain,
                                                         state->mem_ctx, user,
@@ -2243,72 +2070,6 @@ process_result:
        return NT_STATUS_IS_OK(result) ? WINBINDD_OK : WINBINDD_ERROR;
 }
 
-void winbindd_pam_logoff(struct winbindd_cli_state *state)
-{
-       struct winbindd_domain *domain;
-       fstring name_domain, user;
-       uid_t caller_uid = (uid_t)-1;
-       uid_t request_uid = state->request->data.logoff.uid;
-
-       /* Ensure null termination */
-       state->request->data.logoff.user
-               [sizeof(state->request->data.logoff.user)-1]='\0';
-
-       state->request->data.logoff.krb5ccname
-               [sizeof(state->request->data.logoff.krb5ccname)-1]='\0';
-
-       DEBUG(3, ("[%5lu]: pam logoff %s\n", (unsigned long)state->pid,
-               state->request->data.logoff.user));
-
-       if (request_uid == (uid_t)-1) {
-               goto failed;
-       }
-
-       if (!canonicalize_username(state->request->data.logoff.user, name_domain, user)) {
-               goto failed;
-       }
-
-       if ((domain = find_auth_domain(state->request->flags,
-                                      name_domain)) == NULL) {
-               goto failed;
-       }
-
-       if ((sys_getpeereid(state->sock, &caller_uid)) != 0) {
-               DEBUG(1,("winbindd_pam_logoff: failed to check peerid: %s\n",
-                       strerror(errno)));
-               goto failed;
-       }
-
-       switch (caller_uid) {
-               case -1:
-                       goto failed;
-               case 0:
-                       /* root must be able to logoff any user - gd */
-                       state->request->data.logoff.uid = request_uid;
-                       break;
-               default:
-                       if (caller_uid != request_uid) {
-                               DEBUG(1,("winbindd_pam_logoff: caller requested invalid uid\n"));
-                               goto failed;
-                       }
-                       state->request->data.logoff.uid = caller_uid;
-                       break;
-       }
-
-       sendto_domain(state, domain);
-       return;
-
- failed:
-       set_auth_errors(state->response, NT_STATUS_NO_SUCH_USER);
-       DEBUG(5, ("Pam Logoff for %s returned %s "
-                 "(PAM: %d)\n",
-                 state->request->data.logoff.user,
-                 state->response->data.auth.nt_status_string,
-                 state->response->data.auth.pam_error));
-       request_error(state);
-       return;
-}
-
 enum winbindd_result winbindd_dual_pam_logoff(struct winbindd_domain *domain,
                                              struct winbindd_cli_state *state)
 {
@@ -2363,7 +2124,6 @@ enum winbindd_result winbindd_dual_pam_logoff(struct winbindd_domain *domain,
 
 process_result:
 
-       winbindd_delete_memory_creds(state->request->data.logoff.user);
 
        set_auth_errors(state->response, result);
 
@@ -2372,48 +2132,6 @@ process_result:
 
 /* Change user password with auth crap*/
 
-void winbindd_pam_chng_pswd_auth_crap(struct winbindd_cli_state *state)
-{
-       struct winbindd_domain *domain = NULL;
-       const char *domain_name = NULL;
-
-       /* Ensure null termination */
-       state->request->data.chng_pswd_auth_crap.user[
-               sizeof(state->request->data.chng_pswd_auth_crap.user)-1]=0;
-       state->request->data.chng_pswd_auth_crap.domain[
-               sizeof(state->request->data.chng_pswd_auth_crap.domain)-1]=0;
-
-       DEBUG(3, ("[%5lu]: pam change pswd auth crap domain: %s user: %s\n",
-                 (unsigned long)state->pid,
-                 state->request->data.chng_pswd_auth_crap.domain,
-                 state->request->data.chng_pswd_auth_crap.user));
-
-       if (*state->request->data.chng_pswd_auth_crap.domain != '\0') {
-               domain_name = state->request->data.chng_pswd_auth_crap.domain;
-       } else if (lp_winbind_use_default_domain()) {
-               domain_name = lp_workgroup();
-       }
-
-       if (domain_name != NULL)
-               domain = find_domain_from_name(domain_name);
-
-       if (domain != NULL) {
-               DEBUG(7, ("[%5lu]: pam auth crap changing pswd in domain: "
-                         "%s\n", (unsigned long)state->pid,domain->name));
-               sendto_domain(state, domain);
-               return;
-       }
-
-       set_auth_errors(state->response, NT_STATUS_NO_SUCH_USER);
-       DEBUG(5, ("CRAP change password  for %s\\%s returned %s (PAM: %d)\n",
-                 state->request->data.chng_pswd_auth_crap.domain,
-                 state->request->data.chng_pswd_auth_crap.user,
-                 state->response->data.auth.nt_status_string,
-                 state->response->data.auth.pam_error));
-       request_error(state);
-       return;
-}
-
 enum winbindd_result winbindd_dual_pam_chng_pswd_auth_crap(struct winbindd_domain *domainSt, struct winbindd_cli_state *state)
 {
        NTSTATUS result;
@@ -2472,25 +2190,36 @@ enum winbindd_result winbindd_dual_pam_chng_pswd_auth_crap(struct winbindd_domai
        DEBUG(3, ("[%5lu]: pam auth crap domain: %s user: %s\n",
                  (unsigned long)state->pid, domain, user));
 
+       if (strequal(domain, get_global_sam_name())) {
+               enum samPwdChangeReason reject_reason;
+
+               result = pass_oem_change(
+                       user,
+                       state->request->data.chng_pswd_auth_crap.new_lm_pswd,
+                       state->request->data.chng_pswd_auth_crap.old_lm_hash_enc,
+                       state->request->data.chng_pswd_auth_crap.new_nt_pswd,
+                       state->request->data.chng_pswd_auth_crap.old_nt_hash_enc,
+                       &reject_reason);
+               DEBUG(10, ("pass_oem_change returned %s\n",
+                          nt_errstr(result)));
+               goto done;
+       }
+
        /* Change password */
-       new_nt_password = data_blob_talloc(
-               state->mem_ctx,
+       new_nt_password = data_blob_const(
                state->request->data.chng_pswd_auth_crap.new_nt_pswd,
                state->request->data.chng_pswd_auth_crap.new_nt_pswd_len);
 
-       old_nt_hash_enc = data_blob_talloc(
-               state->mem_ctx,
+       old_nt_hash_enc = data_blob_const(
                state->request->data.chng_pswd_auth_crap.old_nt_hash_enc,
                state->request->data.chng_pswd_auth_crap.old_nt_hash_enc_len);
 
        if(state->request->data.chng_pswd_auth_crap.new_lm_pswd_len > 0)        {
-               new_lm_password = data_blob_talloc(
-                       state->mem_ctx,
+               new_lm_password = data_blob_const(
                        state->request->data.chng_pswd_auth_crap.new_lm_pswd,
                        state->request->data.chng_pswd_auth_crap.new_lm_pswd_len);
 
-               old_lm_hash_enc = data_blob_talloc(
-                       state->mem_ctx,
+               old_lm_hash_enc = data_blob_const(
                        state->request->data.chng_pswd_auth_crap.old_lm_hash_enc,
                        state->request->data.chng_pswd_auth_crap.old_lm_hash_enc_len);
        } else {