-/*
+/*
Unix SMB/CIFS implementation.
Winbind daemon - pam auth funcions
}
size = prs_data_size(&ps);
- state->response.extra_data = memdup(prs_data_p(&ps), size);
+ state->response.extra_data = malloc(size);
if (!state->response.extra_data) {
prs_mem_free(&ps);
return NT_STATUS_NO_MEMORY;
}
+ prs_copy_all_data_out(state->response.extra_data, &ps);
state->response.length += size;
prs_mem_free(&ps);
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)
{
fstring name_domain, name_user;
unsigned char trust_passwd[16];
time_t last_change_time;
- uint32 smb_uid_low;
+ uint32 sec_channel_type;
NET_USER_INFO_3 info3;
struct cli_state *cli = NULL;
uchar chal[8];
TALLOC_CTX *mem_ctx = NULL;
DATA_BLOB lm_resp;
DATA_BLOB nt_resp;
-
- extern pstring global_myname;
+ 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';
DEBUG(3, ("[%5d]: pam auth %s\n", state->pid,
state->request.data.auth.user));
- if (!(mem_ctx = talloc_init_named("winbind pam auth for %s", state->request.data.auth.user))) {
+ if (!(mem_ctx = talloc_init("winbind pam auth for %s", state->request.data.auth.user))) {
DEBUG(0, ("winbindd_pam_auth: could not talloc_init()!\n"));
result = NT_STATUS_NO_MEMORY;
goto done;
/* 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)) {
- 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;
}
- /* We really don't care what LUID we give the user. */
+ /* what domain should we contact? */
+
+ if ( IS_DC )
+ contact_domain = name_domain;
+ else
+ contact_domain = lp_workgroup();
+
+ /* check authentication loop */
- generate_random_buffer( (unsigned char *)&smb_uid_low, 4, False);
+ 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;
+ }
- ZERO_STRUCT(info3);
+ 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, &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 */
+ if ((NT_STATUS_EQUAL(result, NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND) || (NT_STATUS_EQUAL(result, NT_STATUS_UNSUCCESSFUL)))) {
+ result = NT_STATUS_NO_LOGON_SERVERS;
+ }
+
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, nt_errstr(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, ("Plain-text authentication for user %s returned %s (PAM: %d)\n",
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)
{
NTSTATUS result;
unsigned char trust_passwd[16];
time_t last_change_time;
+ uint32 sec_channel_type;
NET_USER_INFO_3 info3;
struct cli_state *cli = NULL;
TALLOC_CTX *mem_ctx = NULL;
char *user = NULL;
- char *domain = NULL;
- char *contact_domain;
- char *workstation;
+ const char *domain = NULL;
+ const char *workstation;
+ const char *contact_domain;
+ DOM_CRED ret_creds;
+ int attempts = 0;
DATA_BLOB lm_resp, nt_resp;
- extern pstring global_myname;
+ if (!state->privileged) {
+ DEBUG(2, ("winbindd_pam_auth_crap: non-privileged access denied!\n"));
+ /* send a better message than ACCESS_DENIED */
+ push_utf8_fstring(state->response.data.auth.error_string, "winbind client not authorized to use winbindd_pam_auth_crap");
+ 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';
/* Ensure null termination */
state->request.data.auth_crap.domain[sizeof(state->request.data.auth_crap.domain)-1]='\0';
- if (!(mem_ctx = talloc_init_named("winbind pam auth crap for (utf8) %s", state->request.data.auth.user))) {
+ if (!(mem_ctx = talloc_init("winbind pam auth crap for (utf8) %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) < 0) {
+ 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"));
}
if (*state->request.data.auth_crap.domain) {
- if (pull_utf8_talloc(mem_ctx, &domain, state->request.data.auth_crap.domain) < 0) {
+ 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"));
}
+ domain = dom;
} else if (lp_winbind_use_default_domain()) {
domain = lp_workgroup();
} else {
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) {
- if (pull_utf8_talloc(mem_ctx, &workstation, state->request.data.auth_crap.workstation) < 0) {
+ 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"));
}
+ workstation = wrk;
} else {
- workstation = global_myname;
+ workstation = global_myname();
}
if (state->request.data.auth_crap.lm_resp_len > sizeof(state->request.data.auth_crap.lm_resp)
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)) {
- 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);
- ZERO_STRUCT(info3);
+ /* 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);
- /* Don't shut this down - it belongs to the connection cache code */
- result = cm_get_netlogon_cli(contact_domain, trust_passwd, &cli);
+ if (!NT_STATUS_IS_OK(result)) {
+ DEBUG(3, ("could not open handle to NETLOGON pipe (error: %s)\n",
+ nt_errstr(result)));
+ goto done;
+ }
- if (!NT_STATUS_IS_OK(result)) {
- DEBUG(3, ("could not open handle to NETLOGON pipe (error: %s)\n", nt_errstr(result)));
- goto done;
- }
+ 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. */
- result = cli_netlogon_sam_network_logon(cli, mem_ctx,
- user, domain,
- workstation, state->request.data.auth_crap.chal,
- lm_resp, nt_resp,
- &info3);
+ } while ( (attempts < 2) && (cli->fd == -1) );
+
+ 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 0
- /* we don't currently do this stuff right */
- if (state->request.data.auth_crap.flags & WINBIND_PAM_NTKEY) {
- SMB_ASSERT(sizeof(state->response.data.auth.nt_session_key) == sizeof(info3.user_sess_key));
+
+ 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) {
- SMB_ASSERT(sizeof(state->response.data.auth.nt_session_key) <= sizeof(info3.user_sess_key));
- memcpy(state->response.data.auth.first_8_lm_hash, info3.padding, sizeof(state->response.data.auth.nt_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 */);
}
-#endif
}
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)))) {
+ result = NT_STATUS_NO_LOGON_SERVERS;
+ }
+
state->response.data.auth.nt_status = NT_STATUS_V(result);
push_utf8_fstring(state->response.data.auth.nt_status_string, nt_errstr(result));
- push_utf8_fstring(state->response.data.auth.error_string, nt_errstr(result));
+ if (!*state->response.data.auth.error_string)
+ push_utf8_fstring(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,
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;
}
fstrcpy(state->response.data.auth.error_string, nt_errstr(result));
state->response.data.auth.pam_error = nt_status_to_pam(result);
+ DEBUG(NT_STATUS_IS_OK(result) ? 5 : 2,
+ ("Password change for user [%s]\\[%s] returned %s (PAM: %d)\n",
+ domain,
+ user,
+ state->response.data.auth.nt_status_string,
+ state->response.data.auth.pam_error));
+
return NT_STATUS_IS_OK(result) ? WINBINDD_OK : WINBINDD_ERROR;
}
git.samba.org / tprouty / samba.git / blobdiff