}
size = prs_data_size(&ps);
- state->response.extra_data = malloc(size);
+ state->response.extra_data = SMB_MALLOC(size);
if (!state->response.extra_data) {
prs_mem_free(&ps);
return NT_STATUS_NO_MEMORY;
}
+ memset( state->response.extra_data, '\0', size );
prs_copy_all_data_out(state->response.extra_data, &ps);
state->response.length += size;
prs_mem_free(&ps);
return NT_STATUS_OK;
}
+static NTSTATUS check_info3_in_group(TALLOC_CTX *mem_ctx,
+ NET_USER_INFO_3 *info3,
+ const char *group_sid)
+{
+ DOM_SID require_membership_of_sid;
+ DOM_SID *all_sids;
+ size_t num_all_sids = (2 + info3->num_groups2 + info3->num_other_sids);
+ size_t i, j = 0;
+
+ /* Parse the 'required group' SID */
+
+ if (!group_sid || !group_sid[0]) {
+ /* NO sid supplied, all users may access */
+ return NT_STATUS_OK;
+ }
+
+ if (!string_to_sid(&require_membership_of_sid, group_sid)) {
+ DEBUG(0, ("check_info3_in_group: could not parse %s as a SID!",
+ group_sid));
+
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ all_sids = TALLOC_ARRAY(mem_ctx, DOM_SID, num_all_sids);
+ if (!all_sids)
+ return NT_STATUS_NO_MEMORY;
+
+ /* and create (by appending rids) the 'domain' sids */
+
+ sid_copy(&all_sids[0], &(info3->dom_sid.sid));
+
+ if (!sid_append_rid(&all_sids[0], info3->user_rid)) {
+ DEBUG(3,("could not append user's primary RID 0x%x\n",
+ info3->user_rid));
+
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+ j++;
+
+ sid_copy(&all_sids[1], &(info3->dom_sid.sid));
+
+ if (!sid_append_rid(&all_sids[1], info3->group_rid)) {
+ DEBUG(3,("could not append additional group rid 0x%x\n",
+ info3->group_rid));
+
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+ j++;
+
+ for (i = 0; i < info3->num_groups2; i++) {
+
+ sid_copy(&all_sids[j], &(info3->dom_sid.sid));
+
+ if (!sid_append_rid(&all_sids[j], info3->gids[i].g_rid)) {
+ DEBUG(3,("could not append additional group rid 0x%x\n",
+ info3->gids[i].g_rid));
+
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+ j++;
+ }
+
+ /* Copy 'other' sids. We need to do sid filtering here to
+ prevent possible elevation of privileges. See:
+
+ http://www.microsoft.com/windows2000/techinfo/administration/security/sidfilter.asp
+ */
+
+ for (i = 0; i < info3->num_other_sids; i++) {
+ sid_copy(&all_sids[info3->num_groups2 + i + 2],
+ &info3->other_sids[i].sid);
+ j++;
+ }
+
+ for (i = 0; i < j; i++) {
+ fstring sid1, sid2;
+ DEBUG(10, ("User has SID: %s\n",
+ sid_to_string(sid1, &all_sids[i])));
+ if (sid_equal(&require_membership_of_sid, &all_sids[i])) {
+ DEBUG(10, ("SID %s matches %s - user permitted to authenticate!\n",
+ sid_to_string(sid1, &require_membership_of_sid), sid_to_string(sid2, &all_sids[i])));
+ return NT_STATUS_OK;
+ }
+ }
+
+ /* Do not distinguish this error from a wrong username/pw */
+
+ return NT_STATUS_LOGON_FAILURE;
+}
+
/**********************************************************************
- Authenticate a user with a clear test password
+ Authenticate a user with a clear text password
**********************************************************************/
enum winbindd_result winbindd_pam_auth(struct winbindd_cli_state *state)
int attempts = 0;
unsigned char local_lm_response[24];
unsigned char local_nt_response[24];
- const char *contact_domain;
+ struct winbindd_domain *contact_domain;
BOOL retry;
/* Ensure null termination */
/* Parse domain and username */
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;
- }
/* do password magic */
- generate_random_buffer(chal, 8, False);
- SMBencrypt(state->request.data.auth.pass, chal, local_lm_response);
+
+ generate_random_buffer(chal, 8);
+ if (lp_client_ntlmv2_auth()) {
+ DATA_BLOB server_chal;
+ DATA_BLOB names_blob;
+ DATA_BLOB nt_response;
+ DATA_BLOB lm_response;
+ server_chal = data_blob_talloc(mem_ctx, chal, 8);
+
+ /* note that the 'workgroup' here is a best guess - we don't know
+ the server's domain at this point. The 'server name' is also
+ dodgy...
+ */
+ names_blob = NTLMv2_generate_names_blob(global_myname(), lp_workgroup());
- SMBNTencrypt(state->request.data.auth.pass, chal, local_nt_response);
+ if (!SMBNTLMv2encrypt(name_user, name_domain,
+ state->request.data.auth.pass,
+ &server_chal,
+ &names_blob,
+ &lm_response, &nt_response, NULL)) {
+ data_blob_free(&names_blob);
+ data_blob_free(&server_chal);
+ DEBUG(0, ("winbindd_pam_auth: SMBNTLMv2encrypt() failed!\n"));
+ result = NT_STATUS_NO_MEMORY;
+ goto done;
+ }
+ data_blob_free(&names_blob);
+ data_blob_free(&server_chal);
+ lm_resp = data_blob_talloc(mem_ctx, lm_response.data, lm_response.length);
+ nt_resp = data_blob_talloc(mem_ctx, nt_response.data, nt_response.length);
+ data_blob_free(&lm_response);
+ data_blob_free(&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));
-
- if ( !get_trust_pw(name_domain, trust_passwd, &last_change_time, &sec_channel_type) ) {
- result = NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
- goto done;
+ } else {
+ if (lp_client_lanman_auth()
+ && SMBencrypt(state->request.data.auth.pass,
+ chal,
+ local_lm_response)) {
+ lm_resp = data_blob_talloc(mem_ctx,
+ local_lm_response,
+ sizeof(local_lm_response));
+ } else {
+ lm_resp = data_blob(NULL, 0);
+ }
+ SMBNTencrypt(state->request.data.auth.pass,
+ chal,
+ local_nt_response);
+
+ nt_resp = data_blob_talloc(mem_ctx,
+ local_nt_response,
+ sizeof(local_nt_response));
}
+
/* what domain should we contact? */
- if ( IS_DC )
- contact_domain = name_domain;
- else
- contact_domain = lp_workgroup();
+ if ( IS_DC ) {
+ if (!(contact_domain = find_domain_from_name(name_domain))) {
+ DEBUG(3, ("Authentication for domain for [%s] -> [%s]\\[%s] failed as %s is not a trusted domain\n",
+ state->request.data.auth.user, name_domain, name_user, name_domain));
+ result = NT_STATUS_NO_SUCH_USER;
+ goto done;
+ }
+ } else {
+ if (is_myname(name_domain)) {
+ DEBUG(3, ("Authentication for domain %s (local domain to this server) not supported at this stage\n", name_domain));
+ result = NT_STATUS_NO_SUCH_USER;
+ goto done;
+ }
+
+ if (!(contact_domain = find_our_domain())) {
+ DEBUG(1, ("Authentication for [%s] -> [%s]\\[%s] in our domain failed - we can't find our domain!\n",
+ state->request.data.auth.user, name_domain, name_user));
+ result = NT_STATUS_NO_SUCH_USER;
+ goto done;
+ }
+ }
+
+ if ( !get_trust_pw(contact_domain->name, trust_passwd, &last_change_time, &sec_channel_type) ) {
+ result = NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
+ goto done;
+ }
+
/* check authentication loop */
do {
}
} while ( (attempts < 2) && retry );
-
- clnt_deal_with_creds(cli->sess_key, &(cli->clnt_cred), &ret_creds);
+
+ if (cli != NULL) {
+ /* We might have come out of the loop above with cli == NULL,
+ so don't dereference that. */
+ 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 );
+ netsamlogon_cache_store( cli->mem_ctx, name_user, &info3 );
wcache_invalidate_samlogon(find_domain_from_name(name_domain), &info3);
+
+ /* Check if the user is in the right group */
+
+ if (!NT_STATUS_IS_OK(result = check_info3_in_group(mem_ctx, &info3, state->request.data.auth.require_membership_of_sid))) {
+ DEBUG(3, ("User %s is not in the required group (%s), so plaintext authentication is rejected\n",
+ state->request.data.auth.user,
+ state->request.data.auth.require_membership_of_sid));
+ }
}
-
+
done:
/* give us a more useful (more correct?) error code */
if ((NT_STATUS_EQUAL(result, NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND) || (NT_STATUS_EQUAL(result, NT_STATUS_UNSUCCESSFUL)))) {
state->response.data.auth.nt_status = NT_STATUS_V(result);
fstrcpy(state->response.data.auth.nt_status_string, nt_errstr(result));
- fstrcpy(state->response.data.auth.error_string, get_friendly_nt_error_msg(result));
+
+ /* we might have given a more useful error above */
+ if (!*state->response.data.auth.error_string)
+ fstrcpy(state->response.data.auth.error_string, get_friendly_nt_error_msg(result));
state->response.data.auth.pam_error = nt_status_to_pam(result);
DEBUG(NT_STATUS_IS_OK(result) ? 5 : 2, ("Plain-text authentication for user %s returned %s (PAM: %d)\n",
state->response.data.auth.nt_status_string,
state->response.data.auth.pam_error));
+ if ( NT_STATUS_IS_OK(result) &&
+ (state->request.flags & WBFLAG_PAM_AFS_TOKEN) ) {
+
+ char *afsname = SMB_STRDUP(lp_afs_username_map());
+ char *cell;
+
+ if (afsname == NULL) goto no_token;
+
+ afsname = realloc_string_sub(afsname, "%D", name_domain);
+ afsname = realloc_string_sub(afsname, "%u", name_user);
+ afsname = realloc_string_sub(afsname, "%U", name_user);
+
+ if (afsname == NULL) goto no_token;
+
+ strlower_m(afsname);
+
+ cell = strchr(afsname, '@');
+
+ if (cell == NULL) goto no_token;
+
+ *cell = '\0';
+ cell += 1;
+
+ /* Append an AFS token string */
+ state->response.extra_data =
+ afs_createtoken_str(afsname, cell);
+
+ if (state->response.extra_data != NULL)
+ state->response.length +=
+ strlen(state->response.extra_data)+1;
+
+ no_token:
+ SAFE_FREE(afsname);
+ }
+
if (mem_ctx)
talloc_destroy(mem_ctx);
NET_USER_INFO_3 info3;
struct cli_state *cli = NULL;
TALLOC_CTX *mem_ctx = NULL;
- char *user = NULL;
- const char *domain = NULL;
+ const char *name_user = NULL;
+ const char *name_domain = NULL;
const char *workstation;
- const char *contact_domain;
+ struct winbindd_domain *contact_domain;
DOM_CRED ret_creds;
int attempts = 0;
BOOL retry;
/* send a better message than ACCESS_DENIED */
asprintf(&error_string, "winbind client not authorized to use winbindd_pam_auth_crap. Ensure permissions on %s are set correctly.",
get_winbind_priv_pipe_dir());
- push_utf8_fstring(state->response.data.auth.error_string, error_string);
+ fstrcpy(state->response.data.auth.error_string, error_string);
SAFE_FREE(error_string);
result = NT_STATUS_ACCESS_DENIED;
goto done;
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;
- if (!(mem_ctx = talloc_init("winbind pam auth crap for (utf8) %s", state->request.data.auth_crap.user))) {
+ if (!(mem_ctx = talloc_init("winbind pam auth crap for %s", state->request.data.auth_crap.user))) {
DEBUG(0, ("winbindd_pam_auth_crap: could not talloc_init()!\n"));
result = NT_STATUS_NO_MEMORY;
goto done;
}
- if (pull_utf8_talloc(mem_ctx, &user, state->request.data.auth_crap.user) == (size_t)-1) {
- DEBUG(0, ("winbindd_pam_auth_crap: pull_utf8_talloc failed!\n"));
- result = NT_STATUS_UNSUCCESSFUL;
- goto done;
- }
+ name_user = state->request.data.auth_crap.user;
if (*state->request.data.auth_crap.domain) {
- char *dom = NULL;
- if (pull_utf8_talloc(mem_ctx, &dom, state->request.data.auth_crap.domain) == (size_t)-1) {
- DEBUG(0, ("winbindd_pam_auth_crap: pull_utf8_talloc failed!\n"));
- result = NT_STATUS_UNSUCCESSFUL;
- goto done;
- }
- domain = dom;
+ name_domain = state->request.data.auth_crap.domain;
} else if (lp_winbind_use_default_domain()) {
- domain = lp_workgroup();
+ name_domain = lp_workgroup();
} else {
DEBUG(5,("no domain specified with username (%s) - failing auth\n",
- user));
- result = NT_STATUS_INVALID_PARAMETER;
+ name_user));
+ result = NT_STATUS_NO_SUCH_USER;
goto done;
}
DEBUG(3, ("[%5lu]: pam auth crap domain: %s user: %s\n", (unsigned long)state->pid,
- domain, user));
+ name_domain, name_user));
- 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) {
- char *wrk = NULL;
- if (pull_utf8_talloc(mem_ctx, &wrk, state->request.data.auth_crap.workstation) == (size_t)-1) {
- DEBUG(0, ("winbindd_pam_auth_crap: pull_utf8_talloc failed!\n"));
- result = NT_STATUS_UNSUCCESSFUL;
- goto done;
- }
- workstation = wrk;
+ workstation = state->request.data.auth_crap.workstation;
} else {
workstation = global_myname();
}
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);
+
/* what domain should we contact? */
- if ( IS_DC )
- contact_domain = domain;
- else
- contact_domain = lp_workgroup();
-
+ if ( IS_DC ) {
+ if (!(contact_domain = find_domain_from_name(name_domain))) {
+ DEBUG(3, ("Authentication for domain for [%s] -> [%s]\\[%s] failed as %s is not a trusted domain\n",
+ state->request.data.auth_crap.user, name_domain, name_user, name_domain));
+ result = NT_STATUS_NO_SUCH_USER;
+ goto done;
+ }
+
+ } else {
+ if (is_myname(name_domain)) {
+ DEBUG(3, ("Authentication for domain %s (local domain to this server) not supported at this stage\n", name_domain));
+ result = NT_STATUS_NO_SUCH_USER;
+ goto done;
+ }
+
+ if (!(contact_domain = find_our_domain())) {
+ DEBUG(1, ("Authenticatoin for [%s] -> [%s]\\[%s] in our domain failed - we can't find our domain!\n",
+ state->request.data.auth_crap.user, name_domain, name_user));
+ result = NT_STATUS_NO_SUCH_USER;
+ goto done;
+ }
+ }
+
+ if ( !get_trust_pw(contact_domain->name, trust_passwd, &last_change_time, &sec_channel_type) ) {
+ result = NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
+ goto done;
+ }
+
do {
ZERO_STRUCT(info3);
ZERO_STRUCT(ret_creds);
result = cli_netlogon_sam_network_logon(cli, mem_ctx,
&ret_creds,
- user, domain,
+ name_user, name_domain,
workstation,
state->request.data.auth_crap.chal,
lm_resp, nt_resp,
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));
+ contact_domain->name));
winbindd_cm_flush();
retry = True;
cli = NULL;
} while ( (attempts < 2) && retry );
- clnt_deal_with_creds(cli->sess_key, &(cli->clnt_cred), &ret_creds);
-
+ if (cli != NULL) {
+ /* We might have come out of the loop above with cli == NULL,
+ so don't dereference that. */
+ 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(domain), &info3);
+ netsamlogon_cache_store( cli->mem_ctx, name_user, &info3 );
+ wcache_invalidate_samlogon(find_domain_from_name(name_domain), &info3);
+ if (!NT_STATUS_IS_OK(result = check_info3_in_group(mem_ctx, &info3, state->request.data.auth_crap.require_membership_of_sid))) {
+ DEBUG(3, ("User %s is not in the required group (%s), so plaintext authentication is rejected\n",
+ state->request.data.auth_crap.user,
+ state->request.data.auth_crap.require_membership_of_sid));
+ goto done;
+ }
+
if (state->request.flags & WBFLAG_PAM_INFO3_NDR) {
result = append_info3_as_ndr(mem_ctx, state, &info3);
+ } else if (state->request.flags & WBFLAG_PAM_UNIX_NAME) {
+ /* ntlm_auth should return the unix username, per
+ 'winbind use default domain' settings and the like */
+
+ fstring username_out;
+ const char *nt_username, *nt_domain;
+ if (!(nt_username = unistr2_tdup(mem_ctx, &(info3.uni_user_name)))) {
+ /* If the server didn't give us one, just use the one we sent them */
+ nt_username = name_user;
+ }
+
+ if (!(nt_domain = unistr2_tdup(mem_ctx, &(info3.uni_logon_dom)))) {
+ /* If the server didn't give us one, just use the one we sent them */
+ nt_domain = name_domain;
+ }
+
+ fill_domain_username(username_out, nt_domain, nt_username);
+
+ DEBUG(5, ("Setting unix username to [%s]\n", username_out));
+
+ state->response.extra_data = SMB_STRDUP(username_out);
+ if (!state->response.extra_data) {
+ result = NT_STATUS_NO_MEMORY;
+ goto done;
+ }
+ state->response.length += strlen(state->response.extra_data)+1;
}
- 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.flags & WBFLAG_PAM_USER_SESSION_KEY) {
+ memcpy(state->response.data.auth.user_session_key, info3.user_sess_key, sizeof(state->response.data.auth.user_session_key) /* 16 */);
}
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 ((NT_STATUS_EQUAL(result, NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND) || (NT_STATUS_EQUAL(result, NT_STATUS_UNSUCCESSFUL)))) {
result = NT_STATUS_NO_LOGON_SERVERS;
}
+
+ if (state->request.flags & WBFLAG_PAM_NT_STATUS_SQUASH) {
+ result = nt_status_squash(result);
+ }
state->response.data.auth.nt_status = NT_STATUS_V(result);
- push_utf8_fstring(state->response.data.auth.nt_status_string, nt_errstr(result));
+ fstrcpy(state->response.data.auth.nt_status_string, nt_errstr(result));
+
+ /* we might have given a more useful error above */
if (!*state->response.data.auth.error_string)
- push_utf8_fstring(state->response.data.auth.error_string, get_friendly_nt_error_msg(result));
+ fstrcpy(state->response.data.auth.error_string, get_friendly_nt_error_msg(result));
state->response.data.auth.pam_error = nt_status_to_pam(result);
DEBUG(NT_STATUS_IS_OK(result) ? 5 : 2,
("NTLM CRAP authentication for user [%s]\\[%s] returned %s (PAM: %d)\n",
- domain,
- user,
+ name_domain,
+ name_user,
state->response.data.auth.nt_status_string,
state->response.data.auth.pam_error));
char *oldpass, *newpass;
fstring domain, user;
CLI_POLICY_HND *hnd;
+ TALLOC_CTX *mem_ctx;
+ struct winbindd_domain *contact_domain;
DEBUG(3, ("[%5lu]: pam chauthtok %s\n", (unsigned long)state->pid,
state->request.data.chauthtok.user));
+ if (!(mem_ctx = talloc_init("winbind password change for %s",
+ state->request.data.chauthtok.user))) {
+ DEBUG(0, ("winbindd_pam_auth_crap: could not talloc_init()!\n"));
+ result = NT_STATUS_NO_MEMORY;
+ goto done;
+ }
+
/* Setup crap */
if (state == NULL)
return WINBINDD_ERROR;
parse_domain_user(state->request.data.chauthtok.user, domain, user);
- if ( !*domain ) {
- result = NT_STATUS_INVALID_PARAMETER;
+
+ if (!(contact_domain = find_domain_from_name(domain))) {
+ 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));
+ result = NT_STATUS_NO_SUCH_USER;
goto done;
}
/* Get sam handle */
- if ( NT_STATUS_IS_ERR(result = cm_get_sam_handle(domain, &hnd)) ) {
+ if (!NT_STATUS_IS_OK(result = cm_get_sam_handle(contact_domain, &hnd)) ) {
DEBUG(1, ("could not get SAM handle on DC for %s\n", domain));
goto done;
}
- if (!cli_oem_change_password(hnd->cli, user, newpass, oldpass)) {
- DEBUG(1, ("password change failed for user %s/%s\n", domain,
- user));
- result = NT_STATUS_WRONG_PASSWORD;
- } else {
- result = NT_STATUS_OK;
- }
+ result = cli_samr_chgpasswd_user(hnd->cli, mem_ctx, user, newpass, oldpass);
done:
state->response.data.auth.nt_status = NT_STATUS_V(result);
state->response.data.auth.nt_status_string,
state->response.data.auth.pam_error));
+ if (mem_ctx)
+ talloc_destroy(mem_ctx);
+
return NT_STATUS_IS_OK(result) ? WINBINDD_OK : WINBINDD_ERROR;
}
git.samba.org / tprouty / samba.git / blobdiff