PVOID
LsaNssOpen(
PCSTR pszName,
PCSTR pszDomain,
int mode,
PSTR pszOptions
)
{
DWORD dwError = LW_ERROR_SUCCESS;
PLSA_PAM_CONFIG pConfig = NULL;
dwError = LsaPamGetConfig(&pConfig);
BAIL_ON_LSA_ERROR(dwError);
LsaPamSetLogLevel(pConfig->dwLogLevel);
LSA_LOG_PAM_DEBUG(
"Open called for '%s' with options '%s'",
pszName,
pszOptions);
LsaNssClearState(&gNssState);
dwError = LwAllocateString(
pszName,
&gNssState.pszRegistryName);
BAIL_ON_LSA_ERROR(dwError);
if (!strcasecmp(pszOptions, "debug"))
{
LsaPamSetLogLevel(LSA_PAM_LOG_LEVEL_DEBUG);
}
cleanup:
LSA_LOG_PAM_DEBUG("Open finishing with code %u", dwError);
if (pConfig)
{
LsaPamFreeConfig(pConfig);
}
if (dwError != LW_ERROR_SUCCESS)
{
LsaNssMapErrorCode(dwError, &errno);
return NULL;
}
else
{
return &gNssState;
}
error:
goto cleanup;
}
int
pam_sm_open_session(
pam_handle_t* pamh,
int flags,
int argc,
const char** argv
)
{
DWORD dwError = 0;
PPAMCONTEXT pPamContext = NULL;
HANDLE hLsaConnection = (HANDLE)NULL;
PSTR pszLoginId = NULL;
PLSA_PAM_CONFIG pConfig = NULL;
#ifdef HAVE_PAM_PUTENV
PSTR pszSmartCardReader = NULL;
PSTR pszSmartCardReaderEnv = NULL;
#endif /* HAVE_PAM_PUTENV */
LSA_LOG_PAM_DEBUG("pam_sm_open_session::begin");
dwError = LsaPamGetConfig(&pConfig);
BAIL_ON_LSA_ERROR(dwError);
LsaPamSetLogLevel(pConfig->dwLogLevel);
dwError = LsaPamGetContext(
pamh,
flags,
argc,
argv,
&pPamContext);
BAIL_ON_LSA_ERROR(dwError);
dwError = LsaPamGetLoginId(
pamh,
pPamContext,
&pszLoginId,
TRUE);
BAIL_ON_LSA_ERROR(dwError);
#ifdef HAVE_PAM_PUTENV
dwError = pam_get_data(
pamh,
PAM_LSASS_SMART_CARD_READER,
(PAM_GET_DATA_TYPE)&pszSmartCardReader);
/* pszSmartCardReader will be freed when the module is closed. */
if (dwError == PAM_SUCCESS && pszSmartCardReader != NULL)
{
dwError = LwAllocateStringPrintf(
&pszSmartCardReaderEnv,
"LW_SMART_CARD_READER=%s",
pszSmartCardReader);
BAIL_ON_LSA_ERROR(dwError);
dwError = pam_putenv(
pamh,
pszSmartCardReaderEnv);
BAIL_ON_LSA_ERROR(dwError);
}
#endif /* HAVE_PAM_PUTENV */
if (LsaShouldIgnoreUser(pszLoginId))
{
LSA_LOG_PAM_DEBUG("By passing lsassd for local account");
dwError = LW_ERROR_NOT_HANDLED;
BAIL_ON_LSA_ERROR(dwError);
}
dwError = LsaOpenServer(&hLsaConnection);
BAIL_ON_LSA_ERROR(dwError);
dwError = LsaOpenSession(
hLsaConnection,
pszLoginId);
BAIL_ON_LSA_ERROR(dwError);
if (pPamContext &&
pConfig->bLsaPamDisplayMOTD)
{
dwError = LsaPamDisplayMOTD(
pamh,
pPamContext);
BAIL_ON_LSA_ERROR(dwError);
}
if (pPamContext &&
pPamContext->bOnlineLogon)
{
dwError = LsaPamNotifyUserLogon(
pszLoginId);
if (dwError == LW_ERROR_LOAD_LIBRARY_FAILED ||
dwError == LW_ERROR_LOOKUP_SYMBOL_FAILED )
{
dwError = 0;
}
BAIL_ON_LSA_ERROR(dwError);
}
cleanup:
if (hLsaConnection != (HANDLE)NULL) {
LsaCloseServer(hLsaConnection);
}
if (pConfig)
{
LsaPamFreeConfig(pConfig);
}
LW_SAFE_FREE_STRING(pszLoginId);
#ifdef HAVE_PAM_PUTENV
LW_SAFE_FREE_STRING(pszSmartCardReaderEnv);
#endif /* HAVE_PAM_PUTENV */
LSA_LOG_PAM_DEBUG("pam_sm_open_session::end");
return LsaPamOpenPamFilterOpenSession(
LsaPamMapErrorCode(dwError, pPamContext));
error:
if ((dwError == LW_ERROR_NO_SUCH_USER) || (dwError == LW_ERROR_NOT_HANDLED))
{
LSA_LOG_PAM_WARNING("pam_sm_open_session failed [login:%s][error code: %u]",
LSA_SAFE_LOG_STRING(pszLoginId),
dwError);
}
else
{
LSA_LOG_PAM_ERROR("pam_sm_open_session failed [login:%s][error code: %u]",
LSA_SAFE_LOG_STRING(pszLoginId),
dwError);
}
goto cleanup;
}
int
pam_sm_close_session(
pam_handle_t* pamh,
int flags,
int argc,
const char** argv
)
{
DWORD dwError = 0;
PPAMCONTEXT pPamContext = NULL;
PSTR pszLoginId = NULL;
HANDLE hLsaConnection = (HANDLE)NULL;
PLSA_PAM_CONFIG pConfig = NULL;
dwError = LsaPamGetConfig(&pConfig);
BAIL_ON_LSA_ERROR(dwError);
LsaPamSetLogLevel(pConfig->dwLogLevel);
LSA_LOG_PAM_DEBUG("pam_sm_close_session::begin");
dwError = LsaPamGetContext(
pamh,
flags,
argc,
argv,
&pPamContext);
BAIL_ON_LSA_ERROR(dwError);
dwError = LsaPamGetLoginId(
pamh,
pPamContext,
&pszLoginId,
FALSE);
BAIL_ON_LSA_ERROR(dwError);
if (pszLoginId == NULL)
{
dwError = LW_ERROR_NO_SUCH_USER;
BAIL_ON_LSA_ERROR(dwError);
}
if (LsaShouldIgnoreUser(pszLoginId))
{
LSA_LOG_PAM_DEBUG("By passing lsassd for local account");
dwError = LW_ERROR_NOT_HANDLED;
BAIL_ON_LSA_ERROR(dwError);
}
dwError = LsaOpenServer(&hLsaConnection);
BAIL_ON_LSA_ERROR(dwError);
dwError = LsaCloseSession(
hLsaConnection,
pszLoginId);
BAIL_ON_LSA_ERROR(dwError);
dwError = LsaPamNotifyUserLogoff(
pszLoginId);
if (dwError == LW_ERROR_LOAD_LIBRARY_FAILED ||
dwError == LW_ERROR_LOOKUP_SYMBOL_FAILED )
{
dwError = 0;
}
BAIL_ON_LSA_ERROR(dwError);
cleanup:
if (hLsaConnection != (HANDLE)NULL) {
LsaCloseServer(hLsaConnection);
}
if (pConfig)
{
LsaPamFreeConfig(pConfig);
}
LW_SAFE_FREE_STRING(pszLoginId);
LSA_LOG_PAM_DEBUG("pam_sm_close_session::end");
return LsaPamOpenPamFilterCloseSession(
LsaPamMapErrorCode(dwError, pPamContext));
error:
if ((dwError == LW_ERROR_NO_SUCH_USER) || (dwError == LW_ERROR_NOT_HANDLED))
{
LSA_LOG_PAM_WARNING("pam_sm_close_session error [error code:%u]", dwError);
}
else
{
LSA_LOG_PAM_ERROR("pam_sm_close_session error [error code:%u]", dwError);
}
goto cleanup;
}
/*
* This is where we check if the password expired.
* If the password is correct, but has expired, we return
* PAM_NEW_AUTHTOK_REQD instead of PAM_SUCCESS
*/
int
pam_sm_acct_mgmt(
pam_handle_t* pamh,
int flags,
int argc,
const char** argv
)
{
DWORD dwError = 0;
PPAMCONTEXT pPamContext = NULL;
HANDLE hLsaConnection = (HANDLE)NULL;
PLSA_USER_INFO_2 pUserInfo = NULL;
DWORD dwUserInfoLevel = 2;
PSTR pszLoginId = NULL;
PLSA_PAM_CONFIG pConfig = NULL;
int iPamError = 0;
PSTR pszExpireDone;
LSA_LOG_PAM_DEBUG("pam_sm_acct_mgmt::begin");
dwError = LsaPamGetConfig(&pConfig);
BAIL_ON_LSA_ERROR(dwError);
LsaPamSetLogLevel(pConfig->dwLogLevel);
dwError = LsaPamGetContext(
pamh,
flags,
argc,
argv,
&pPamContext);
BAIL_ON_LSA_ERROR(dwError);
dwError = LsaPamGetLoginId(
pamh,
pPamContext,
&pszLoginId,
TRUE);
BAIL_ON_LSA_ERROR(dwError);
if (LsaShouldIgnoreUser(pszLoginId))
{
LSA_LOG_PAM_DEBUG("By passing lsassd for local account");
dwError = LW_ERROR_NOT_HANDLED;
BAIL_ON_LSA_ERROR(dwError);
}
dwError = LsaOpenServer(&hLsaConnection);
BAIL_ON_LSA_ERROR(dwError);
dwError = LsaCheckUserInList(
hLsaConnection,
pszLoginId,
NULL);
if (dwError && dwError != LW_ERROR_NO_SUCH_USER)
{
if (dwError == LW_ERROR_NO_SUCH_USER)
{
BAIL_ON_LSA_ERROR(dwError);
}
LSA_LOG_PAM_ERROR("User %s is denied access because they are not in the 'require membership of' list",
LSA_SAFE_LOG_STRING(pszLoginId));
if (!LW_IS_NULL_OR_EMPTY_STR(pConfig->pszAccessDeniedMessage))
{
LsaPamConverse(pamh,
pConfig->pszAccessDeniedMessage,
PAM_TEXT_INFO,
NULL);
}
}
BAIL_ON_LSA_ERROR(dwError);
dwError = LsaValidateUser(
hLsaConnection,
pszLoginId,
NULL);
if (dwError == LW_ERROR_PASSWORD_EXPIRED)
{
dwError = 0;
pPamContext->bPasswordExpired = TRUE;
}
BAIL_ON_LSA_ERROR(dwError);
if (pPamContext->bPasswordExpired)
{
// If during pam_sm_authenticate,
// we detected that the password expired,
// we handle it here
if (!pPamContext->bPasswordMessageShown)
{
LsaPamConverse(
pamh,
"Your password has expired",
PAM_ERROR_MSG,
NULL);
pPamContext->bPasswordMessageShown = TRUE;
}
dwError = LW_ERROR_PASSWORD_EXPIRED;
BAIL_ON_LSA_ERROR(dwError);
}
iPamError = pam_get_data(
pamh,
PAM_LSASS_EXPIRE_WARNING_DONE,
(PAM_GET_DATA_TYPE)&pszExpireDone);
if (iPamError == PAM_NO_MODULE_DATA)
{
dwError = LsaFindUserByName(
hLsaConnection,
pszLoginId,
dwUserInfoLevel,
(PVOID*)&pUserInfo);
BAIL_ON_LSA_ERROR(dwError);
if (pUserInfo->bPromptPasswordChange == TRUE &&
pUserInfo->bPasswordExpired == FALSE &&
pUserInfo->bPasswordNeverExpires == FALSE) {
CHAR szMessage[512];
switch (pUserInfo->dwDaysToPasswordExpiry)
{
case 0:
sprintf(szMessage, "Your password will expire today\n");
break;
case 1:
sprintf(szMessage, "Your password will expire in 1 day\n");
break;
default:
sprintf(szMessage, "Your password will expire in %u days\n",
pUserInfo->dwDaysToPasswordExpiry);
break;
}
LsaPamConverse(pamh, szMessage, PAM_TEXT_INFO, NULL);
}
dwError = LsaPamSetDataString(
pamh,
PAM_LSASS_EXPIRE_WARNING_DONE,
"TRUE");
BAIL_ON_LSA_ERROR(dwError);
}
cleanup:
if (pUserInfo) {
LsaFreeUserInfo(dwUserInfoLevel, (PVOID)pUserInfo);
}
if (hLsaConnection != (HANDLE)NULL)
{
LsaCloseServer(hLsaConnection);
}
if (pConfig)
{
LsaPamFreeConfig(pConfig);
}
LW_SAFE_FREE_STRING(pszLoginId);
LSA_LOG_PAM_DEBUG("pam_sm_acct_mgmt::end");
return LsaPamOpenPamFilterAcctMgmt(
LsaPamMapErrorCode(dwError, pPamContext));
error:
if (dwError == LW_ERROR_NO_SUCH_USER || dwError == LW_ERROR_NOT_HANDLED)
{
LSA_LOG_PAM_WARNING("pam_sm_acct_mgmt failed [login:%s][error code:%u]",
LSA_SAFE_LOG_STRING(pszLoginId),
dwError);
}
else
{
LSA_LOG_PAM_ERROR("pam_sm_acct_mgmt failed [login:%s][error code:%u]",
LSA_SAFE_LOG_STRING(pszLoginId),
dwError);
if (pszLoginId && !strcmp(pszLoginId, "root"))
{
dwError = LW_ERROR_NO_SUCH_USER;
LSA_LOG_PAM_ERROR("Converting error to %u for root", dwError);
}
}
goto cleanup;
}