Merge branch 'master' of ssh://git.samba.org/data/git/samba

1 files changed, 0 insertions, 3204 deletions

diff --git a/source3/nsswitch/pam_winbind.c b/source3/nsswitch/pam_winbind.c
deleted file mode 100644
index d049bdb1e7..0000000000
--- a/source3/nsswitch/pam_winbind.c
+++ /dev/null
@@ -1,3204 +0,0 @@
-/* pam_winbind module
-
-   Copyright Andrew Tridgell <tridge@samba.org> 2000
-   Copyright Tim Potter <tpot@samba.org> 2000
-   Copyright Andrew Bartlett <abartlet@samba.org> 2002
-   Copyright Guenther Deschner <gd@samba.org> 2005-2008
-
-   largely based on pam_userdb by Cristian Gafton <gafton@redhat.com> also
-   contains large slabs of code from pam_unix by Elliot Lee
-   <sopwith@redhat.com> (see copyright below for full details)
-*/
-
-#include "pam_winbind.h"
-
-static int wbc_error_to_pam_error(wbcErr status)
-{
-	switch (status) {
-		case WBC_ERR_SUCCESS:
-			return PAM_SUCCESS;
-		case WBC_ERR_NOT_IMPLEMENTED:
-			return PAM_SERVICE_ERR;
-		case WBC_ERR_UNKNOWN_FAILURE:
-			break;
-		case WBC_ERR_NO_MEMORY:
-			return PAM_BUF_ERR;
-		case WBC_ERR_INVALID_SID:
-		case WBC_ERR_INVALID_PARAM:
-			break;
-		case WBC_ERR_WINBIND_NOT_AVAILABLE:
-			return PAM_AUTHINFO_UNAVAIL;
-		case WBC_ERR_DOMAIN_NOT_FOUND:
-			return PAM_AUTHINFO_UNAVAIL;
-		case WBC_ERR_INVALID_RESPONSE:
-			return PAM_BUF_ERR;
-		case WBC_ERR_NSS_ERROR:
-			return PAM_USER_UNKNOWN;
-		case WBC_ERR_AUTH_ERROR:
-			return PAM_AUTH_ERR;
-		case WBC_ERR_UNKNOWN_USER:
-			return PAM_USER_UNKNOWN;
-		case WBC_ERR_UNKNOWN_GROUP:
-			return PAM_USER_UNKNOWN;
-		case WBC_ERR_PWD_CHANGE_FAILED:
-			break;
-	}
-
-	/* be paranoid */
-	return PAM_AUTH_ERR;
-}
-
-static const char *_pam_error_code_str(int err)
-{
-	switch (err) {
-		case PAM_SUCCESS:
-			return "PAM_SUCCESS";
-		case PAM_OPEN_ERR:
-			return "PAM_OPEN_ERR";
-		case PAM_SYMBOL_ERR:
-			return "PAM_SYMBOL_ERR";
-		case PAM_SERVICE_ERR:
-			return "PAM_SERVICE_ERR";
-		case PAM_SYSTEM_ERR:
-			return "PAM_SYSTEM_ERR";
-		case PAM_BUF_ERR:
-			return "PAM_BUF_ERR";
-		case PAM_PERM_DENIED:
-			return "PAM_PERM_DENIED";
-		case PAM_AUTH_ERR:
-			return "PAM_AUTH_ERR";
-		case PAM_CRED_INSUFFICIENT:
-			return "PAM_CRED_INSUFFICIENT";
-		case PAM_AUTHINFO_UNAVAIL:
-			return "PAM_AUTHINFO_UNAVAIL";
-		case PAM_USER_UNKNOWN:
-			return "PAM_USER_UNKNOWN";
-		case PAM_MAXTRIES:
-			return "PAM_MAXTRIES";
-		case PAM_NEW_AUTHTOK_REQD:
-			return "PAM_NEW_AUTHTOK_REQD";
-		case PAM_ACCT_EXPIRED:
-			return "PAM_ACCT_EXPIRED";
-		case PAM_SESSION_ERR:
-			return "PAM_SESSION_ERR";
-		case PAM_CRED_UNAVAIL:
-			return "PAM_CRED_UNAVAIL";
-		case PAM_CRED_EXPIRED:
-			return "PAM_CRED_EXPIRED";
-		case PAM_CRED_ERR:
-			return "PAM_CRED_ERR";
-		case PAM_NO_MODULE_DATA:
-			return "PAM_NO_MODULE_DATA";
-		case PAM_CONV_ERR:
-			return "PAM_CONV_ERR";
-		case PAM_AUTHTOK_ERR:
-			return "PAM_AUTHTOK_ERR";
-		case PAM_AUTHTOK_RECOVER_ERR:
-			return "PAM_AUTHTOK_RECOVER_ERR";
-		case PAM_AUTHTOK_LOCK_BUSY:
-			return "PAM_AUTHTOK_LOCK_BUSY";
-		case PAM_AUTHTOK_DISABLE_AGING:
-			return "PAM_AUTHTOK_DISABLE_AGING";
-		case PAM_TRY_AGAIN:
-			return "PAM_TRY_AGAIN";
-		case PAM_IGNORE:
-			return "PAM_IGNORE";
-		case PAM_ABORT:
-			return "PAM_ABORT";
-		case PAM_AUTHTOK_EXPIRED:
-			return "PAM_AUTHTOK_EXPIRED";
-#ifdef PAM_MODULE_UNKNOWN
-		case PAM_MODULE_UNKNOWN:
-			return "PAM_MODULE_UNKNOWN";
-#endif
-#ifdef PAM_BAD_ITEM
-		case PAM_BAD_ITEM:
-			return "PAM_BAD_ITEM";
-#endif
-#ifdef PAM_CONV_AGAIN
-		case PAM_CONV_AGAIN:
-			return "PAM_CONV_AGAIN";
-#endif
-#ifdef PAM_INCOMPLETE
-		case PAM_INCOMPLETE:
-			return "PAM_INCOMPLETE";
-#endif
-		default:
-			return NULL;
-	}
-}
-
-#define _PAM_LOG_FUNCTION_ENTER(function, ctx) \
-	do { \
-		_pam_log_debug(ctx, LOG_DEBUG, "[pamh: %p] ENTER: " \
-			       function " (flags: 0x%04x)", ctx->pamh, ctx->flags); \
-		_pam_log_state(ctx); \
-	} while (0)
-
-#define _PAM_LOG_FUNCTION_LEAVE(function, ctx, retval) \
-	do { \
-		_pam_log_debug(ctx, LOG_DEBUG, "[pamh: %p] LEAVE: " \
-			       function " returning %d (%s)", ctx->pamh, retval, \
-			       _pam_error_code_str(retval)); \
-		_pam_log_state(ctx); \
-	} while (0)
-
-/* data tokens */
-
-#define MAX_PASSWD_TRIES	3
-
-#ifdef HAVE_GETTEXT
-static char initialized = 0;
-
-static inline void textdomain_init(void);
-static inline void textdomain_init(void)
-{
-	if (!initialized) {
-		bindtextdomain(MODULE_NAME, dyn_LOCALEDIR);
-		initialized = 1;
-	}
-	return;
-}
-#endif
-
-
-/*
- * Work around the pam API that has functions with void ** as parameters
- * These lead to strict aliasing warnings with gcc.
- */
-static int _pam_get_item(const pam_handle_t *pamh,
-			 int item_type,
-			 const void *_item)
-{
-	const void **item = (const void **)_item;
-	return pam_get_item(pamh, item_type, item);
-}
-static int _pam_get_data(const pam_handle_t *pamh,
-			 const char *module_data_name,
-			 const void *_data)
-{
-	const void **data = (const void **)_data;
-	return pam_get_data(pamh, module_data_name, data);
-}
-
-/* some syslogging */
-
-#ifdef HAVE_PAM_VSYSLOG
-static void _pam_log_int(const pam_handle_t *pamh,
-			 int err,
-			 const char *format,
-			 va_list args)
-{
-	pam_vsyslog(pamh, err, format, args);
-}
-#else
-static void _pam_log_int(const pam_handle_t *pamh,
-			 int err,
-			 const char *format,
-			 va_list args)
-{
-	char *format2 = NULL;
-	const char *service;
-
-	_pam_get_item(pamh, PAM_SERVICE, &service);
-
-	format2 = (char *)malloc(strlen(MODULE_NAME)+strlen(format)+strlen(service)+5);
-	if (format2 == NULL) {
-		/* what else todo ? */
-		vsyslog(err, format, args);
-		return;
-	}
-
-	sprintf(format2, "%s(%s): %s", MODULE_NAME, service, format);
-	vsyslog(err, format2, args);
-	SAFE_FREE(format2);
-}
-#endif /* HAVE_PAM_VSYSLOG */
-
-static bool _pam_log_is_silent(int ctrl)
-{
-	return on(ctrl, WINBIND_SILENT);
-}
-
-static void _pam_log(struct pwb_context *r, int err, const char *format, ...) PRINTF_ATTRIBUTE(3,4);
-static void _pam_log(struct pwb_context *r, int err, const char *format, ...)
-{
-	va_list args;
-
-	if (_pam_log_is_silent(r->ctrl)) {
-		return;
-	}
-
-	va_start(args, format);
-	_pam_log_int(r->pamh, err, format, args);
-	va_end(args);
-}
-static void __pam_log(const pam_handle_t *pamh, int ctrl, int err, const char *format, ...) PRINTF_ATTRIBUTE(4,5);
-static void __pam_log(const pam_handle_t *pamh, int ctrl, int err, const char *format, ...)
-{
-	va_list args;
-
-	if (_pam_log_is_silent(ctrl)) {
-		return;
-	}
-
-	va_start(args, format);
-	_pam_log_int(pamh, err, format, args);
-	va_end(args);
-}
-
-static bool _pam_log_is_debug_enabled(int ctrl)
-{
-	if (ctrl == -1) {
-		return false;
-	}
-
-	if (_pam_log_is_silent(ctrl)) {
-		return false;
-	}
-
-	if (!(ctrl & WINBIND_DEBUG_ARG)) {
-		return false;
-	}
-
-	return true;
-}
-
-static bool _pam_log_is_debug_state_enabled(int ctrl)
-{
-	if (!(ctrl & WINBIND_DEBUG_STATE)) {
-		return false;
-	}
-
-	return _pam_log_is_debug_enabled(ctrl);
-}
-
-static void _pam_log_debug(struct pwb_context *r, int err, const char *format, ...) PRINTF_ATTRIBUTE(3,4);
-static void _pam_log_debug(struct pwb_context *r, int err, const char *format, ...)
-{
-	va_list args;
-
-	if (!_pam_log_is_debug_enabled(r->ctrl)) {
-		return;
-	}
-
-	va_start(args, format);
-	_pam_log_int(r->pamh, err, format, args);
-	va_end(args);
-}
-static void __pam_log_debug(const pam_handle_t *pamh, int ctrl, int err, const char *format, ...) PRINTF_ATTRIBUTE(4,5);
-static void __pam_log_debug(const pam_handle_t *pamh, int ctrl, int err, const char *format, ...)
-{
-	va_list args;
-
-	if (!_pam_log_is_debug_enabled(ctrl)) {
-		return;
-	}
-
-	va_start(args, format);
-	_pam_log_int(pamh, err, format, args);
-	va_end(args);
-}
-
-static void _pam_log_state_datum(struct pwb_context *ctx,
-				 int item_type,
-				 const char *key,
-				 int is_string)
-{
-	const void *data = NULL;
-	if (item_type != 0) {
-		pam_get_item(ctx->pamh, item_type, &data);
-	} else {
-		pam_get_data(ctx->pamh, key, &data);
-	}
-	if (data != NULL) {
-		const char *type = (item_type != 0) ? "ITEM" : "DATA";
-		if (is_string != 0) {
-			_pam_log_debug(ctx, LOG_DEBUG,
-				       "[pamh: %p] STATE: %s(%s) = \"%s\" (%p)",
-				       ctx->pamh, type, key, (const char *)data,
-				       data);
-		} else {
-			_pam_log_debug(ctx, LOG_DEBUG,
-				       "[pamh: %p] STATE: %s(%s) = %p",
-				       ctx->pamh, type, key, data);
-		}
-	}
-}
-
-#define _PAM_LOG_STATE_DATA_POINTER(ctx, module_data_name) \
-	_pam_log_state_datum(ctx, 0, module_data_name, 0)
-
-#define _PAM_LOG_STATE_DATA_STRING(ctx, module_data_name) \
-	_pam_log_state_datum(ctx, 0, module_data_name, 1)
-
-#define _PAM_LOG_STATE_ITEM_POINTER(ctx, item_type) \
-	_pam_log_state_datum(ctx, item_type, #item_type, 0)
-
-#define _PAM_LOG_STATE_ITEM_STRING(ctx, item_type) \
-	_pam_log_state_datum(ctx, item_type, #item_type, 1)
-
-#ifdef DEBUG_PASSWORD
-#define _LOG_PASSWORD_AS_STRING 1
-#else
-#define _LOG_PASSWORD_AS_STRING 0
-#endif
-
-#define _PAM_LOG_STATE_ITEM_PASSWORD(ctx, item_type) \
-	_pam_log_state_datum(ctx, item_type, #item_type, \
-			     _LOG_PASSWORD_AS_STRING)
-
-static void _pam_log_state(struct pwb_context *ctx)
-{
-	if (!_pam_log_is_debug_state_enabled(ctx->ctrl)) {
-		return;
-	}
-
-	_PAM_LOG_STATE_ITEM_STRING(ctx, PAM_SERVICE);
-	_PAM_LOG_STATE_ITEM_STRING(ctx, PAM_USER);
-	_PAM_LOG_STATE_ITEM_STRING(ctx, PAM_TTY);
-	_PAM_LOG_STATE_ITEM_STRING(ctx, PAM_RHOST);
-	_PAM_LOG_STATE_ITEM_STRING(ctx, PAM_RUSER);
-	_PAM_LOG_STATE_ITEM_PASSWORD(ctx, PAM_OLDAUTHTOK);
-	_PAM_LOG_STATE_ITEM_PASSWORD(ctx, PAM_AUTHTOK);
-	_PAM_LOG_STATE_ITEM_STRING(ctx, PAM_USER_PROMPT);
-	_PAM_LOG_STATE_ITEM_POINTER(ctx, PAM_CONV);
-#ifdef PAM_FAIL_DELAY
-	_PAM_LOG_STATE_ITEM_POINTER(ctx, PAM_FAIL_DELAY);
-#endif
-#ifdef PAM_REPOSITORY
-	_PAM_LOG_STATE_ITEM_POINTER(ctx, PAM_REPOSITORY);
-#endif
-
-	_PAM_LOG_STATE_DATA_STRING(ctx, PAM_WINBIND_HOMEDIR);
-	_PAM_LOG_STATE_DATA_STRING(ctx, PAM_WINBIND_LOGONSCRIPT);
-	_PAM_LOG_STATE_DATA_STRING(ctx, PAM_WINBIND_LOGONSERVER);
-	_PAM_LOG_STATE_DATA_STRING(ctx, PAM_WINBIND_PROFILEPATH);
-	_PAM_LOG_STATE_DATA_STRING(ctx,
-				   PAM_WINBIND_NEW_AUTHTOK_REQD);
-				   /* Use atoi to get PAM result code */
-	_PAM_LOG_STATE_DATA_STRING(ctx,
-				   PAM_WINBIND_NEW_AUTHTOK_REQD_DURING_AUTH);
-	_PAM_LOG_STATE_DATA_POINTER(ctx, PAM_WINBIND_PWD_LAST_SET);
-}
-
-static int _pam_parse(const pam_handle_t *pamh,
-		      int flags,
-		      int argc,
-		      const char **argv,
-		      dictionary **result_d)
-{
-	int ctrl = 0;
-	const char *config_file = NULL;
-	int i;
-	const char **v;
-	dictionary *d = NULL;
-
-	if (flags & PAM_SILENT) {
-		ctrl |= WINBIND_SILENT;
-	}
-
-	for (i=argc,v=argv; i-- > 0; ++v) {
-		if (!strncasecmp(*v, "config", strlen("config"))) {
-			ctrl |= WINBIND_CONFIG_FILE;
-			config_file = v[i];
-			break;
-		}
-	}
-
-	if (config_file == NULL) {
-		config_file = PAM_WINBIND_CONFIG_FILE;
-	}
-
-	d = iniparser_load(config_file);
-	if (d == NULL) {
-		goto config_from_pam;
-	}
-
-	if (iniparser_getboolean(d, "global:debug", false)) {
-		ctrl |= WINBIND_DEBUG_ARG;
-	}
-
-	if (iniparser_getboolean(d, "global:debug_state", false)) {
-		ctrl |= WINBIND_DEBUG_STATE;
-	}
-
-	if (iniparser_getboolean(d, "global:cached_login", false)) {
-		ctrl |= WINBIND_CACHED_LOGIN;
-	}
-
-	if (iniparser_getboolean(d, "global:krb5_auth", false)) {
-		ctrl |= WINBIND_KRB5_AUTH;
-	}
-
-	if (iniparser_getboolean(d, "global:silent", false)) {
-		ctrl |= WINBIND_SILENT;
-	}
-
-	if (iniparser_getstr(d, "global:krb5_ccache_type") != NULL) {
-		ctrl |= WINBIND_KRB5_CCACHE_TYPE;
-	}
-
-	if ((iniparser_getstr(d, "global:require-membership-of") != NULL) ||
-	    (iniparser_getstr(d, "global:require_membership_of") != NULL)) {
-		ctrl |= WINBIND_REQUIRED_MEMBERSHIP;
-	}
-
-	if (iniparser_getboolean(d, "global:try_first_pass", false)) {
-		ctrl |= WINBIND_TRY_FIRST_PASS_ARG;
-	}
-
-	if (iniparser_getint(d, "global:warn_pwd_expire", 0)) {
-		ctrl |= WINBIND_WARN_PWD_EXPIRE;
-	}
-
-	if (iniparser_getboolean(d, "global:mkhomedir", false)) {
-		ctrl |= WINBIND_MKHOMEDIR;
-	}
-
-config_from_pam:
-	/* step through arguments */
-	for (i=argc,v=argv; i-- > 0; ++v) {
-
-		/* generic options */
-		if (!strcmp(*v,"debug"))
-			ctrl |= WINBIND_DEBUG_ARG;
-		else if (!strcasecmp(*v, "debug_state"))
-			ctrl |= WINBIND_DEBUG_STATE;
-		else if (!strcasecmp(*v, "silent"))
-			ctrl |= WINBIND_SILENT;
-		else if (!strcasecmp(*v, "use_authtok"))
-			ctrl |= WINBIND_USE_AUTHTOK_ARG;
-		else if (!strcasecmp(*v, "use_first_pass"))
-			ctrl |= WINBIND_USE_FIRST_PASS_ARG;
-		else if (!strcasecmp(*v, "try_first_pass"))
-			ctrl |= WINBIND_TRY_FIRST_PASS_ARG;
-		else if (!strcasecmp(*v, "unknown_ok"))
-			ctrl |= WINBIND_UNKNOWN_OK_ARG;
-		else if (!strncasecmp(*v, "require_membership_of",
-				      strlen("require_membership_of")))
-			ctrl |= WINBIND_REQUIRED_MEMBERSHIP;
-		else if (!strncasecmp(*v, "require-membership-of",
-				      strlen("require-membership-of")))
-			ctrl |= WINBIND_REQUIRED_MEMBERSHIP;
-		else if (!strcasecmp(*v, "krb5_auth"))
-			ctrl |= WINBIND_KRB5_AUTH;
-		else if (!strncasecmp(*v, "krb5_ccache_type",
-				      strlen("krb5_ccache_type")))
-			ctrl |= WINBIND_KRB5_CCACHE_TYPE;
-		else if (!strcasecmp(*v, "cached_login"))
-			ctrl |= WINBIND_CACHED_LOGIN;
-		else if (!strcasecmp(*v, "mkhomedir"))
-			ctrl |= WINBIND_MKHOMEDIR;
-		else {
-			__pam_log(pamh, ctrl, LOG_ERR,
-				 "pam_parse: unknown option: %s", *v);
-			return -1;
-		}
-
-	}
-
-	if (result_d) {
-		*result_d = d;
-	} else {
-		if (d) {
-			iniparser_freedict(d);
-		}
-	}
-
-	return ctrl;
-};
-
-static int _pam_winbind_free_context(struct pwb_context *ctx)
-{
-	if (!ctx) {
-		return 0;
-	}
-
-	if (ctx->dict) {
-		iniparser_freedict(ctx->dict);
-	}
-
-	return 0;
-}
-
-static int _pam_winbind_init_context(pam_handle_t *pamh,
-				     int flags,
-				     int argc,
-				     const char **argv,
-				     struct pwb_context **ctx_p)
-{
-	struct pwb_context *r = NULL;
-
-#ifdef HAVE_GETTEXT
-	textdomain_init();
-#endif
-
-	r = TALLOC_ZERO_P(NULL, struct pwb_context);
-	if (!r) {
-		return PAM_BUF_ERR;
-	}
-
-	talloc_set_destructor(r, _pam_winbind_free_context);
-
-	r->pamh = pamh;
-	r->flags = flags;
-	r->argc = argc;
-	r->argv = argv;
-	r->ctrl = _pam_parse(pamh, flags, argc, argv, &r->dict);
-	if (r->ctrl == -1) {
-		TALLOC_FREE(r);
-		return PAM_SYSTEM_ERR;
-	}
-
-	*ctx_p = r;
-
-	return PAM_SUCCESS;
-}
-
-static void _pam_winbind_cleanup_func(pam_handle_t *pamh,
-				      void *data,
-				      int error_status)
-{
-	int ctrl = _pam_parse(pamh, 0, 0, NULL, NULL);
-	if (_pam_log_is_debug_state_enabled(ctrl)) {
-		__pam_log_debug(pamh, ctrl, LOG_DEBUG,
-			       "[pamh: %p] CLEAN: cleaning up PAM data %p "
-			       "(error_status = %d)", pamh, data,
-			       error_status);
-	}
-	TALLOC_FREE(data);
-}
-
-
-static const struct ntstatus_errors {
-	const char *ntstatus_string;
-	const char *error_string;
-} ntstatus_errors[] = {
-	{"NT_STATUS_OK",
-		N_("Success")},
-	{"NT_STATUS_BACKUP_CONTROLLER",
-		N_("No primary Domain Controler available")},
-	{"NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND",
-		N_("No domain controllers found")},
-	{"NT_STATUS_NO_LOGON_SERVERS",
-		N_("No logon servers")},
-	{"NT_STATUS_PWD_TOO_SHORT",
-		N_("Password too short")},
-	{"NT_STATUS_PWD_TOO_RECENT",
-		N_("The password of this user is too recent to change")},
-	{"NT_STATUS_PWD_HISTORY_CONFLICT",
-		N_("Password is already in password history")},
-	{"NT_STATUS_PASSWORD_EXPIRED",
-		N_("Your password has expired")},
-	{"NT_STATUS_PASSWORD_MUST_CHANGE",
-		N_("You need to change your password now")},
-	{"NT_STATUS_INVALID_WORKSTATION",
-		N_("You are not allowed to logon from this workstation")},
-	{"NT_STATUS_INVALID_LOGON_HOURS",
-		N_("You are not allowed to logon at this time")},
-	{"NT_STATUS_ACCOUNT_EXPIRED",
-		N_("Your account has expired. "
-		   "Please contact your System administrator")}, /* SCNR */
-	{"NT_STATUS_ACCOUNT_DISABLED",
-		N_("Your account is disabled. "
-		   "Please contact your System administrator")}, /* SCNR */
-	{"NT_STATUS_ACCOUNT_LOCKED_OUT",
-		N_("Your account has been locked. "
-		   "Please contact your System administrator")}, /* SCNR */
-	{"NT_STATUS_NOLOGON_WORKSTATION_TRUST_ACCOUNT",
-		N_("Invalid Trust Account")},
-	{"NT_STATUS_NOLOGON_SERVER_TRUST_ACCOUNT",
-		N_("Invalid Trust Account")},
-	{"NT_STATUS_NOLOGON_INTERDOMAIN_TRUST_ACCOUNT",
-		N_("Invalid Trust Account")},
-	{"NT_STATUS_ACCESS_DENIED",
-		N_("Access is denied")},
-	{NULL, NULL}
-};
-
-static const char *_get_ntstatus_error_string(const char *nt_status_string)
-{
-	int i;
-	for (i=0; ntstatus_errors[i].ntstatus_string != NULL; i++) {
-		if (!strcasecmp(ntstatus_errors[i].ntstatus_string,
-				nt_status_string)) {
-			return _(ntstatus_errors[i].error_string);
-		}
-	}
-	return NULL;
-}
-
-/* --- authentication management functions --- */
-
-/* Attempt a conversation */
-
-static int converse(const pam_handle_t *pamh,
-		    int nargs,
-		    struct pam_message **message,
-		    struct pam_response **response)
-{
-	int retval;
-	struct pam_conv *conv;
-
-	retval = _pam_get_item(pamh, PAM_CONV, &conv);
-	if (retval == PAM_SUCCESS) {
-		retval = conv->conv(nargs,
-				    (const struct pam_message **)message,
-				    response, conv->appdata_ptr);
-	}
-
-	return retval; /* propagate error status */
-}
-
-
-static int _make_remark(struct pwb_context *ctx,
-			int type,
-			const char *text)
-{
-	int retval = PAM_SUCCESS;
-
-	struct pam_message *pmsg[1], msg[1];
-	struct pam_response *resp;
-
-	if (ctx->flags & WINBIND_SILENT) {
-		return PAM_SUCCESS;
-	}
-
-	pmsg[0] = &msg[0];
-	msg[0].msg = discard_const_p(char, text);
-	msg[0].msg_style = type;
-
-	resp = NULL;
-	retval = converse(ctx->pamh, 1, pmsg, &resp);
-
-	if (resp) {
-		_pam_drop_reply(resp, 1);
-	}
-	return retval;
-}
-
-static int _make_remark_v(struct pwb_context *ctx,
-			  int type,
-			  const char *format,
-			  va_list args)
-{
-	char *var;
-	int ret;
-
-	ret = vasprintf(&var, format, args);
-	if (ret < 0) {
-		_pam_log(ctx, LOG_ERR, "memory allocation failure");
-		return ret;
-	}
-
-	ret = _make_remark(ctx, type, var);
-	SAFE_FREE(var);
-	return ret;
-}
-
-static int _make_remark_format(struct pwb_context *ctx, int type, const char *format, ...) PRINTF_ATTRIBUTE(3,4);
-static int _make_remark_format(struct pwb_context *ctx, int type, const char *format, ...)
-{
-	int ret;
-	va_list args;
-
-	va_start(args, format);
-	ret = _make_remark_v(ctx, type, format, args);
-	va_end(args);
-	return ret;
-}
-
-static int pam_winbind_request_log(struct pwb_context *ctx,
-				   int retval,
-				   const char *user,
-				   const char *fn)
-{
-	switch (retval) {
-	case PAM_AUTH_ERR:
-		/* incorrect password */
-		_pam_log(ctx, LOG_WARNING, "user '%s' denied access "
-			 "(incorrect password or invalid membership)", user);
-		return retval;
-	case PAM_ACCT_EXPIRED:
-		/* account expired */
-		_pam_log(ctx, LOG_WARNING, "user '%s' account expired",
-			 user);
-		return retval;
-	case PAM_AUTHTOK_EXPIRED:
-		/* password expired */
-		_pam_log(ctx, LOG_WARNING, "user '%s' password expired",
-			 user);
-		return retval;
-	case PAM_NEW_AUTHTOK_REQD:
-		/* new password required */
-		_pam_log(ctx, LOG_WARNING, "user '%s' new password "
-			 "required", user);
-		return retval;
-	case PAM_USER_UNKNOWN:
-		/* the user does not exist */
-		_pam_log_debug(ctx, LOG_NOTICE, "user '%s' not found",
-			       user);
-		if (ctx->ctrl & WINBIND_UNKNOWN_OK_ARG) {
-			return PAM_IGNORE;
-		}
-		return retval;
-	case PAM_SUCCESS:
-		/* Otherwise, the authentication looked good */
-		if (strcmp(fn, "wbcLogonUser") == 0) {
-			_pam_log(ctx, LOG_NOTICE,
-				 "user '%s' granted access", user);
-		} else {
-			_pam_log(ctx, LOG_NOTICE,
-				 "user '%s' OK", user);
-		}
-		return retval;
-	default:
-		/* we don't know anything about this return value */
-		_pam_log(ctx, LOG_ERR,
-			 "internal module error (retval = %s(%d), user = '%s')",
-			_pam_error_code_str(retval), retval, user);
-		return retval;
-	}
-}
-
-static int wbc_auth_error_to_pam_error(struct pwb_context *ctx,
-				       struct wbcAuthErrorInfo *e,
-				       wbcErr status,
-				       const char *username,
-				       const char *fn)
-{
-	int ret = PAM_AUTH_ERR;
-
-	if (WBC_ERROR_IS_OK(status)) {
-		_pam_log_debug(ctx, LOG_DEBUG, "request %s succeeded",
-			fn);
-		ret = PAM_SUCCESS;
-		return pam_winbind_request_log(ctx, ret, username, fn);
-	}
-
-	if (e) {
-		if (e->pam_error != PAM_SUCCESS) {
-			_pam_log(ctx, LOG_ERR,
-				 "request %s failed: %s, "
-				 "PAM error: %s (%d), NTSTATUS: %s, "
-				 "Error message was: %s",
-				 fn,
-				 wbcErrorString(status),
-				 _pam_error_code_str(e->pam_error),
-				 e->pam_error,
-				 e->nt_string,
-				 e->display_string);
-			ret = e->pam_error;
-			return pam_winbind_request_log(ctx, ret, username, fn);
-		}
-
-		_pam_log(ctx, LOG_ERR, "request %s failed, but PAM error 0!", fn);
-
-		ret = PAM_SERVICE_ERR;
-		return pam_winbind_request_log(ctx, ret, username, fn);
-	}
-
-	ret = wbc_error_to_pam_error(status);
-	return pam_winbind_request_log(ctx, ret, username, fn);
-}
-
-
-/**
- * send a password expiry message if required
- *
- * @param ctx PAM winbind context.
- * @param next_change expected (calculated) next expiry date.
- * @param already_expired pointer to a boolean to indicate if the password is
- *        already expired.
- *
- * @return boolean Returns true if message has been sent, false if not.
- */
-
-static bool _pam_send_password_expiry_message(struct pwb_context *ctx,
-					      time_t next_change,
-					      time_t now,
-					      int warn_pwd_expire,
-					      bool *already_expired)
-{
-	int days = 0;
-	struct tm tm_now, tm_next_change;
-
-	if (already_expired) {
-		*already_expired = false;
-	}
-
-	if (next_change <= now) {
-		PAM_WB_REMARK_DIRECT(ctx, "NT_STATUS_PASSWORD_EXPIRED");
-		if (already_expired) {
-			*already_expired = true;
-		}
-		return true;
-	}
-
-	if ((next_change < 0) ||
-	    (next_change > now + warn_pwd_expire * SECONDS_PER_DAY)) {
-		return false;
-	}
-
-	if ((localtime_r(&now, &tm_now) == NULL) ||
-	    (localtime_r(&next_change, &tm_next_change) == NULL)) {
-		return false;
-	}
-
-	days = (tm_next_change.tm_yday+tm_next_change.tm_year*365) -
-	       (tm_now.tm_yday+tm_now.tm_year*365);
-
-	if (days == 0) {
-		_make_remark(ctx, PAM_TEXT_INFO,
-			     _("Your password expires today"));
-		return true;
-	}
-
-	if (days > 0 && days < warn_pwd_expire) {
-		_make_remark_format(ctx, PAM_TEXT_INFO,
-				    _("Your password will expire in %d %s"),
-				    days, (days > 1) ? _("days"):_("day"));
-		return true;
-	}
-
-	return false;
-}
-
-/**
- * Send a warning if the password expires in the near future
- *
- * @param ctx PAM winbind context.
- * @param response The full authentication response structure.
- * @param already_expired boolean, is the pwd already expired?
- *
- * @return void.
- */
-
-static void _pam_warn_password_expiry(struct pwb_context *ctx,
-				      const struct wbcAuthUserInfo *info,
-				      const struct wbcUserPasswordPolicyInfo *policy,
-				      int warn_pwd_expire,
-				      bool *already_expired)
-{
-	time_t now = time(NULL);
-	time_t next_change = 0;
-
-	if (!info || !policy) {
-		return;
-	}
-
-	if (already_expired) {
-		*already_expired = false;
-	}
-
-	/* accounts with WBC_ACB_PWNOEXP set never receive a warning */
-	if (info->acct_flags & WBC_ACB_PWNOEXP) {
-		return;
-	}
-
-	/* no point in sending a warning if this is a grace logon */
-	if (PAM_WB_GRACE_LOGON(info->user_flags)) {
-		return;
-	}
-
-	/* check if the info3 must change timestamp has been set */
-	next_change = info->pass_must_change_time;
-
-	if (_pam_send_password_expiry_message(ctx, next_change, now,
-					      warn_pwd_expire,
-					      already_expired)) {
-		return;
-	}
-
-	/* now check for the global password policy */
-	/* good catch from Ralf Haferkamp: an expiry of "never" is translated
-	 * to -1 */
-	if (policy->expire <= 0) {
-		return;
-	}
-
-	next_change = info->pass_last_set_time + policy->expire;
-
-	if (_pam_send_password_expiry_message(ctx, next_change, now,
-					      warn_pwd_expire,
-					      already_expired)) {
-		return;
-	}
-
-	/* no warning sent */
-}
-
-#define IS_SID_STRING(name) (strncmp("S-", name, 2) == 0)
-
-/**
- * Append a string, making sure not to overflow and to always return a
- * NULL-terminated string.
- *
- * @param dest Destination string buffer (must already be NULL-terminated).
- * @param src Source string buffer.
- * @param dest_buffer_size Size of dest buffer in bytes.
- *
- * @return false if dest buffer is not big enough (no bytes copied), true on
- * success.
- */
-
-static bool safe_append_string(char *dest,
-			       const char *src,
-			       int dest_buffer_size)
-{
-	int dest_length = strlen(dest);
-	int src_length = strlen(src);
-
-	if (dest_length + src_length + 1 > dest_buffer_size) {
-		return false;
-	}
-
-	memcpy(dest + dest_length, src, src_length + 1);
-	return true;
-}
-
-/**
- * Convert a names into a SID string, appending it to a buffer.
- *
- * @param ctx PAM winbind context.
- * @param user User in PAM request.
- * @param name Name to convert.
- * @param sid_list_buffer Where to append the string sid.
- * @param sid_list_buffer Size of sid_list_buffer (in bytes).
- *
- * @return false on failure, true on success.
- */
-static bool winbind_name_to_sid_string(struct pwb_context *ctx,
-				       const char *user,
-				       const char *name,
-				       char *sid_list_buffer,
-				       int sid_list_buffer_size)
-{
-	const char* sid_string;
-
-	/* lookup name? */
-	if (IS_SID_STRING(name)) {
-		sid_string = name;
-	} else {
-		wbcErr wbc_status;
-		struct wbcDomainSid sid;
-		enum wbcSidType type;
-		char *sid_str;
-
-		_pam_log_debug(ctx, LOG_DEBUG,
-			       "no sid given, looking up: %s\n", name);
-
-		wbc_status = wbcLookupName("", name, &sid, &type);
-		if (!WBC_ERROR_IS_OK(wbc_status)) {
-			_pam_log(ctx, LOG_INFO,
-				 "could not lookup name: %s\n", name);
-			return false;
-		}
-
-		wbc_status = wbcSidToString(&sid, &sid_str);
-		if (!WBC_ERROR_IS_OK(wbc_status)) {
-			return false;
-		}
-
-		wbcFreeMemory(sid_str);
-		sid_string = sid_str;
-	}
-
-	if (!safe_append_string(sid_list_buffer, sid_string,
-				sid_list_buffer_size)) {
-		return false;
-	}
-
-	return true;
-}
-
-/**
- * Convert a list of names into a list of sids.
- *
- * @param ctx PAM winbind context.
- * @param user User in PAM request.
- * @param name_list List of names or string sids, separated by commas.
- * @param sid_list_buffer Where to put the list of string sids.
- * @param sid_list_buffer Size of sid_list_buffer (in bytes).
- *
- * @return false on failure, true on success.
- */
-static bool winbind_name_list_to_sid_string_list(struct pwb_context *ctx,
-						 const char *user,
-						 const char *name_list,
-						 char *sid_list_buffer,
-						 int sid_list_buffer_size)
-{
-	bool result = false;
-	char *current_name = NULL;
-	const char *search_location;
-	const char *comma;
-
-	if (sid_list_buffer_size > 0) {
-		sid_list_buffer[0] = 0;
-	}
-
-	search_location = name_list;
-	while ((comma = strstr(search_location, ",")) != NULL) {
-		current_name = strndup(search_location,
-				       comma - search_location);
-		if (NULL == current_name) {
-			goto out;
-		}
-
-		if (!winbind_name_to_sid_string(ctx, user,
-						current_name,
-						sid_list_buffer,
-						sid_list_buffer_size)) {
-			goto out;
-		}
-
-		SAFE_FREE(current_name);
-
-		if (!safe_append_string(sid_list_buffer, ",",
-					sid_list_buffer_size)) {
-			goto out;
-		}
-
-		search_location = comma + 1;
-	}
-
-	if (!winbind_name_to_sid_string(ctx, user, search_location,
-					sid_list_buffer,
-					sid_list_buffer_size)) {
-		goto out;
-	}
-
-	result = true;
-
-out:
-	SAFE_FREE(current_name);
-	return result;
-}
-
-/**
- * put krb5ccname variable into environment
- *
- * @param ctx PAM winbind context.
- * @param krb5ccname env variable retrieved from winbindd.
- *
- * @return void.
- */
-
-static void _pam_setup_krb5_env(struct pwb_context *ctx,
-				struct wbcLogonUserInfo *info)
-{
-	char var[PATH_MAX];
-	int ret;
-	uint32_t i;
-	const char *krb5ccname = NULL;
-
-	if (off(ctx->ctrl, WINBIND_KRB5_AUTH)) {
-		return;
-	}
-
-	if (!info) {
-		return;
-	}
-
-	for (i=0; i < info->num_blobs; i++) {
-		if (strcasecmp(info->blobs[i].name, "krb5ccname") == 0) {
-			krb5ccname = (const char *)info->blobs[i].blob.data;
-			break;
-		}
-	}
-
-	if (!krb5ccname || (strlen(krb5ccname) == 0)) {
-		return;
-	}
-
-	_pam_log_debug(ctx, LOG_DEBUG,
-		       "request returned KRB5CCNAME: %s", krb5ccname);
-
-	if (snprintf(var, sizeof(var), "KRB5CCNAME=%s", krb5ccname) == -1) {
-		return;
-	}
-
-	ret = pam_putenv(ctx->pamh, var);
-	if (ret) {
-		_pam_log(ctx, LOG_ERR,
-			 "failed to set KRB5CCNAME to %s: %s",
-			 var, pam_strerror(ctx->pamh, ret));
-	}
-}
-
-/**
- * Copy unix username if available (further processed in PAM).
- *
- * @param ctx PAM winbind context
- * @param user_ret A pointer that holds a pointer to a string
- * @param unix_username A username
- *
- * @return void.
- */
-
-static void _pam_setup_unix_username(struct pwb_context *ctx,
-				     char **user_ret,
-				     struct wbcLogonUserInfo *info)
-{
-	const char *unix_username = NULL;
-	uint32_t i;
-
-	if (!user_ret || !info) {
-		return;
-	}
-
-	for (i=0; i < info->num_blobs; i++) {
-		if (strcasecmp(info->blobs[i].name, "unix_username") == 0) {
-			unix_username = (const char *)info->blobs[i].blob.data;
-			break;
-		}
-	}
-
-	if (!unix_username || !unix_username[0]) {
-		return;
-	}
-
-	*user_ret = strdup(unix_username);
-}
-
-/**
- * Set string into the PAM stack.
- *
- * @param ctx PAM winbind context.
- * @param data_name Key name for pam_set_data.
- * @param value String value.
- *
- * @return void.
- */
-
-static void _pam_set_data_string(struct pwb_context *ctx,
-				 const char *data_name,
-				 const char *value)
-{
-	int ret;
-
-	if (!data_name || !value || (strlen(data_name) == 0) ||
-	     (strlen(value) == 0)) {
-		return;
-	}
-
-	ret = pam_set_data(ctx->pamh, data_name, talloc_strdup(NULL, value),
-			   _pam_winbind_cleanup_func);
-	if (ret) {
-		_pam_log_debug(ctx, LOG_DEBUG,
-			       "Could not set data %s: %s\n",
-			       data_name, pam_strerror(ctx->pamh, ret));
-	}
-}
-
-/**
- * Set info3 strings into the PAM stack.
- *
- * @param ctx PAM winbind context.
- * @param data_name Key name for pam_set_data.
- * @param value String value.
- *
- * @return void.
- */
-
-static void _pam_set_data_info3(struct pwb_context *ctx,
-				const struct wbcAuthUserInfo *info)
-{
-	_pam_set_data_string(ctx, PAM_WINBIND_HOMEDIR,
-			     info->home_directory);
-	_pam_set_data_string(ctx, PAM_WINBIND_LOGONSCRIPT,
-			     info->logon_script);
-	_pam_set_data_string(ctx, PAM_WINBIND_LOGONSERVER,
-			     info->logon_server);
-	_pam_set_data_string(ctx, PAM_WINBIND_PROFILEPATH,
-			     info->profile_path);
-}
-
-/**
- * Free info3 strings in the PAM stack.
- *
- * @param pamh PAM handle
- *
- * @return void.
- */
-
-static void _pam_free_data_info3(pam_handle_t *pamh)
-{
-	pam_set_data(pamh, PAM_WINBIND_HOMEDIR, NULL, NULL);
-	pam_set_data(pamh, PAM_WINBIND_LOGONSCRIPT, NULL, NULL);
-	pam_set_data(pamh, PAM_WINBIND_LOGONSERVER, NULL, NULL);
-	pam_set_data(pamh, PAM_WINBIND_PROFILEPATH, NULL, NULL);
-}
-
-/**
- * Send PAM_ERROR_MSG for cached or grace logons.
- *
- * @param ctx PAM winbind context.
- * @param username User in PAM request.
- * @param info3_user_flgs Info3 flags containing logon type bits.
- *
- * @return void.
- */
-
-static void _pam_warn_logon_type(struct pwb_context *ctx,
-				 const char *username,
-				 uint32_t info3_user_flgs)
-{
-	/* inform about logon type */
-	if (PAM_WB_GRACE_LOGON(info3_user_flgs)) {
-
-		_make_remark(ctx, PAM_ERROR_MSG,
-			     _("Grace login. "
-			       "Please change your password as soon you're "
-			       "online again"));
-		_pam_log_debug(ctx, LOG_DEBUG,
-			       "User %s logged on using grace logon\n",
-			       username);
-
-	} else if (PAM_WB_CACHED_LOGON(info3_user_flgs)) {
-
-		_make_remark(ctx, PAM_ERROR_MSG,
-			     _("Domain Controller unreachable, "
-			       "using cached credentials instead. "
-			       "Network resources may be unavailable"));
-		_pam_log_debug(ctx, LOG_DEBUG,
-			       "User %s logged on using cached credentials\n",
-			       username);
-	}
-}
-
-/**
- * Send PAM_ERROR_MSG for krb5 errors.
- *
- * @param ctx PAM winbind context.
- * @param username User in PAM request.
- * @param info3_user_flgs Info3 flags containing logon type bits.
- *
- * @return void.
- */
-
-static void _pam_warn_krb5_failure(struct pwb_context *ctx,
-				   const char *username,
-				   uint32_t info3_user_flgs)
-{
-	if (PAM_WB_KRB5_CLOCK_SKEW(info3_user_flgs)) {
-		_make_remark(ctx, PAM_ERROR_MSG,
-			     _("Failed to establish your Kerberos Ticket cache "
-			       "due time differences\n"
-			       "with the domain controller.  "
-			       "Please verify the system time.\n"));
-		_pam_log_debug(ctx, LOG_DEBUG,
-			       "User %s: Clock skew when getting Krb5 TGT\n",
-			       username);
-	}
-}
-
-static bool _pam_check_remark_auth_err(struct pwb_context *ctx,
-				       const struct wbcAuthErrorInfo *e,
-				       const char *nt_status_string,
-				       int *pam_error)
-{
-	const char *ntstatus = NULL;
-	const char *error_string = NULL;
-
-	if (!e || !pam_error) {
-		return false;
-	}
-
-	ntstatus = e->nt_string;
-	if (!ntstatus) {
-		return false;
-	}
-
-	if (strcasecmp(ntstatus, nt_status_string) == 0) {
-
-		error_string = _get_ntstatus_error_string(nt_status_string);
-		if (error_string) {
-			_make_remark(ctx, PAM_ERROR_MSG, error_string);
-			*pam_error = e->pam_error;
-			return true;
-		}
-
-		if (e->display_string) {
-			_make_remark(ctx, PAM_ERROR_MSG, e->display_string);
-			*pam_error = e->pam_error;
-			return true;
-		}
-
-		_make_remark(ctx, PAM_ERROR_MSG, nt_status_string);
-		*pam_error = e->pam_error;
-
-		return true;
-	}
-
-	return false;
-};
-
-/**
- * Compose Password Restriction String for a PAM_ERROR_MSG conversation.
- *
- * @param i The wbcUserPasswordPolicyInfo struct.
- *
- * @return string (caller needs to talloc_free).
- */
-
-static char *_pam_compose_pwd_restriction_string(struct pwb_context *ctx,
-						 struct wbcUserPasswordPolicyInfo *i)
-{
-	char *str = NULL;
-
-	if (!i) {
-		goto failed;
-	}
-
-	str = talloc_asprintf(ctx, _("Your password "));
-	if (!str) {
-		goto failed;
-	}
-
-	if (i->min_length_password > 0) {
-		str = talloc_asprintf_append(str,
-			       _("must be at least %d characters; "),
-			       i->min_length_password);
-		if (!str) {
-			goto failed;
-		}
-	}
-
-	if (i->password_history > 0) {
-		str = talloc_asprintf_append(str,
-			       _("cannot repeat any of your previous %d "
-			        "passwords; "),
-			       i->password_history);
-		if (!str) {
-			goto failed;
-		}
-	}
-
-	if (i->password_properties & WBC_DOMAIN_PASSWORD_COMPLEX) {
-		str = talloc_asprintf_append(str,
-			       _("must contain capitals, numerals "
-			         "or punctuation; "
-			         "and cannot contain your account "
-			         "or full name; "));
-		if (!str) {
-			goto failed;
-		}
-	}
-
-	str = talloc_asprintf_append(str,
-		       _("Please type a different password. "
-		         "Type a password which meets these requirements in "
-		         "both text boxes."));
-	if (!str) {
-		goto failed;
-	}
-
-	return str;
-
- failed:
-	TALLOC_FREE(str);
-	return NULL;
-}
-
-static int _pam_create_homedir(struct pwb_context *ctx,
-			       const char *dirname,
-			       mode_t mode)
-{
-	struct stat sbuf;
-
-	if (stat(dirname, &sbuf) == 0) {
-		return PAM_SUCCESS;
-	}
-
-	if (mkdir(dirname, mode) != 0) {
-
-		_make_remark_format(ctx, PAM_TEXT_INFO,
-				    _("Creating directory: %s failed: %s"),
-				    dirname, strerror(errno));
-		_pam_log(ctx, LOG_ERR, "could not create dir: %s (%s)",
-		 dirname, strerror(errno));
-		 return PAM_PERM_DENIED;
-	}
-
-	return PAM_SUCCESS;
-}
-
-static int _pam_chown_homedir(struct pwb_context *ctx,
-			      const char *dirname,
-			      uid_t uid,
-			      gid_t gid)
-{
-	if (chown(dirname, uid, gid) != 0) {
-		_pam_log(ctx, LOG_ERR, "failed to chown user homedir: %s (%s)",
-			 dirname, strerror(errno));
-		return PAM_PERM_DENIED;
-	}
-
-	return PAM_SUCCESS;
-}
-
-static int _pam_mkhomedir(struct pwb_context *ctx)
-{
-	struct passwd *pwd = NULL;
-	char *token = NULL;
-	char *create_dir = NULL;
-	char *user_dir = NULL;
-	int ret;
-	const char *username;
-	mode_t mode = 0700;
-	char *safe_ptr = NULL;
-	char *p = NULL;
-
-	/* Get the username */
-	ret = pam_get_user(ctx->pamh, &username, NULL);
-	if ((ret != PAM_SUCCESS) || (!username)) {
-		_pam_log_debug(ctx, LOG_DEBUG, "can not get the username");
-		return PAM_SERVICE_ERR;
-	}
-
-	pwd = getpwnam(username);
-	if (pwd == NULL) {
-		_pam_log_debug(ctx, LOG_DEBUG, "can not get the username");
-		return PAM_USER_UNKNOWN;
-	}
-	_pam_log_debug(ctx, LOG_DEBUG, "homedir is: %s", pwd->pw_dir);
-
-	ret = _pam_create_homedir(ctx, pwd->pw_dir, 0700);
-	if (ret == PAM_SUCCESS) {
-		ret = _pam_chown_homedir(ctx, pwd->pw_dir,
-					 pwd->pw_uid,
-					 pwd->pw_gid);
-	}
-
-	if (ret == PAM_SUCCESS) {
-		return ret;
-	}
-
-	/* maybe we need to create parent dirs */
-	create_dir = talloc_strdup(ctx, "/");
-	if (!create_dir) {
-		return PAM_BUF_ERR;
-	}
-
-	/* find final directory */
-	user_dir = strrchr(pwd->pw_dir, '/');
-	if (!user_dir) {
-		return PAM_BUF_ERR;
-	}
-	user_dir++;
-
-	_pam_log(ctx, LOG_DEBUG, "final directory: %s", user_dir);
-
-	p = pwd->pw_dir;
-
-	while ((token = strtok_r(p, "/", &safe_ptr)) != NULL) {
-
-		mode = 0755;
-
-		p = NULL;
-
-		_pam_log_debug(ctx, LOG_DEBUG, "token is %s", token);
-
-		create_dir = talloc_asprintf_append(create_dir, "%s/", token);
-		if (!create_dir) {
-			return PAM_BUF_ERR;
-		}
-		_pam_log_debug(ctx, LOG_DEBUG, "current_dir is %s", create_dir);
-
-		if (strcmp(token, user_dir) == 0) {
-			_pam_log_debug(ctx, LOG_DEBUG, "assuming last directory: %s", token);
-			mode = 0700;
-		}
-
-		ret = _pam_create_homedir(ctx, create_dir, mode);
-		if (ret) {
-			return ret;
-		}
-	}
-
-	return _pam_chown_homedir(ctx, create_dir,
-				  pwd->pw_uid,
-				  pwd->pw_gid);
-}
-
-/* talk to winbindd */
-static int winbind_auth_request(struct pwb_context *ctx,
-				const char *user,
-				const char *pass,
-				const char *member,
-				const char *cctype,
-				const int warn_pwd_expire,
-				struct wbcAuthErrorInfo **p_error,
-				struct wbcLogonUserInfo **p_info,
-				struct wbcUserPasswordPolicyInfo **p_policy,
-				time_t *pwd_last_set,
-				char **user_ret)
-{
-	wbcErr wbc_status;
-
-	struct wbcLogonUserParams logon;
-	char membership_of[1024];
-	uid_t user_uid = -1;
-	uint32_t flags = WBFLAG_PAM_INFO3_TEXT |
-			 WBFLAG_PAM_GET_PWD_POLICY;
-
-	struct wbcLogonUserInfo *info = NULL;
-	struct wbcAuthUserInfo *user_info = NULL;
-	struct wbcAuthErrorInfo *error = NULL;
-	struct wbcUserPasswordPolicyInfo *policy = NULL;
-
-	int ret = PAM_AUTH_ERR;
-	int i;
-	const char *codes[] = {
-		"NT_STATUS_PASSWORD_EXPIRED",
-		"NT_STATUS_PASSWORD_MUST_CHANGE",
-		"NT_STATUS_INVALID_WORKSTATION",
-		"NT_STATUS_INVALID_LOGON_HOURS",
-		"NT_STATUS_ACCOUNT_EXPIRED",
-		"NT_STATUS_ACCOUNT_DISABLED",
-		"NT_STATUS_ACCOUNT_LOCKED_OUT",
-		"NT_STATUS_NOLOGON_WORKSTATION_TRUST_ACCOUNT",
-		"NT_STATUS_NOLOGON_SERVER_TRUST_ACCOUNT",
-		"NT_STATUS_NOLOGON_INTERDOMAIN_TRUST_ACCOUNT",
-		"NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND",
-		"NT_STATUS_NO_LOGON_SERVERS",
-		"NT_STATUS_WRONG_PASSWORD",
-		"NT_STATUS_ACCESS_DENIED"
-	};
-
-	if (pwd_last_set) {
-		*pwd_last_set = 0;
-	}
-
-	/* Krb5 auth always has to go against the KDC of the user's realm */
-
-	if (ctx->ctrl & WINBIND_KRB5_AUTH) {
-		flags		|= WBFLAG_PAM_CONTACT_TRUSTDOM;
-	}
-
-	if (ctx->ctrl & (WINBIND_KRB5_AUTH|WINBIND_CACHED_LOGIN)) {
-		struct passwd *pwd = NULL;
-
-		pwd = getpwnam(user);
-		if (pwd == NULL) {
-			return PAM_USER_UNKNOWN;
-		}
-		user_uid	= pwd->pw_uid;
-	}
-
-	if (ctx->ctrl & WINBIND_KRB5_AUTH) {
-
-		_pam_log_debug(ctx, LOG_DEBUG,
-			       "enabling krb5 login flag\n");
-
-		flags		|= WBFLAG_PAM_KRB5 |
-				   WBFLAG_PAM_FALLBACK_AFTER_KRB5;
-	}
-
-	if (ctx->ctrl & WINBIND_CACHED_LOGIN) {
-		_pam_log_debug(ctx, LOG_DEBUG,
-			       "enabling cached login flag\n");
-		flags		|= WBFLAG_PAM_CACHED_LOGIN;
-	}
-
-	if (user_ret) {
-		*user_ret = NULL;
-		flags		|= WBFLAG_PAM_UNIX_NAME;
-	}
-
-	if (cctype != NULL) {
-		_pam_log_debug(ctx, LOG_DEBUG,
-			       "enabling request for a %s krb5 ccache\n",
-			       cctype);
-	}
-
-	if (member != NULL) {
-
-		ZERO_STRUCT(membership_of);
-
-		if (!winbind_name_list_to_sid_string_list(ctx, user, member,
-							  membership_of,
-							  sizeof(membership_of))) {
-			_pam_log_debug(ctx, LOG_ERR,
-				       "failed to serialize membership of sid "
-				       "\"%s\"\n", member);
-			return PAM_AUTH_ERR;
-		}
-	}
-
-	ZERO_STRUCT(logon);
-
-	logon.username			= user;
-	logon.password			= pass;
-
-	if (cctype) {
-		wbc_status = wbcAddNamedBlob(&logon.num_blobs,
-					     &logon.blobs,
-					     "krb5_cc_type",
-					     0,
-					     (uint8_t *)cctype,
-					     strlen(cctype)+1);
-		if (!WBC_ERROR_IS_OK(wbc_status)) {
-			goto done;
-		}
-	}
-
-	wbc_status = wbcAddNamedBlob(&logon.num_blobs,
-				     &logon.blobs,
-				     "flags",
-				     0,
-				     (uint8_t *)&flags,
-				     sizeof(flags));
-	if (!WBC_ERROR_IS_OK(wbc_status)) {
-		goto done;
-	}
-
-	wbc_status = wbcAddNamedBlob(&logon.num_blobs,
-				     &logon.blobs,
-				     "user_uid",
-				     0,
-				     (uint8_t *)&user_uid,
-				     sizeof(user_uid));
-	if (!WBC_ERROR_IS_OK(wbc_status)) {
-		goto done;
-	}
-
-	if (member) {
-		wbc_status = wbcAddNamedBlob(&logon.num_blobs,
-					     &logon.blobs,
-					     "membership_of",
-					     0,
-					     (uint8_t *)membership_of,
-					     sizeof(membership_of));
-		if (!WBC_ERROR_IS_OK(wbc_status)) {
-			goto done;
-		}
-	}
-
-	wbc_status = wbcLogonUser(&logon, &info, &error, &policy);
-	ret = wbc_auth_error_to_pam_error(ctx, error, wbc_status,
-					  user, "wbcLogonUser");
-	wbcFreeMemory(logon.blobs);
-	logon.blobs = NULL;
-
-	if (info && info->info) {
-		user_info = info->info;
-	}
-
-	if (pwd_last_set && user_info) {
-		*pwd_last_set = user_info->pass_last_set_time;
-	}
-
-	if (p_info && info) {
-		*p_info = info;
-	}
-
-	if (p_policy && policy) {
-		*p_policy = policy;
-	}
-
-	if (p_error && error) {
-		/* We want to process the error in the caller. */
-		*p_error = error;
-		return ret;
-	}
-
-	for (i=0; i<ARRAY_SIZE(codes); i++) {
-		int _ret = ret;
-		if (_pam_check_remark_auth_err(ctx, error, codes[i], &_ret)) {
-			ret = _ret;
-			goto done;
-		}
-	}
-
-	if ((ret == PAM_SUCCESS) && user_info && policy && info) {
-
-		bool already_expired = false;
-
-		/* warn a user if the password is about to expire soon */
-		_pam_warn_password_expiry(ctx, user_info, policy,
-					  warn_pwd_expire,
-					  &already_expired);
-
-		if (already_expired == true) {
-
-			SMB_TIME_T last_set = user_info->pass_last_set_time;
-
-			_pam_log_debug(ctx, LOG_DEBUG,
-				       "Password has expired "
-				       "(Password was last set: %lld, "
-				       "the policy says it should expire here "
-				       "%lld (now it's: %lu))\n",
-				       (long long int)last_set,
-				       (long long int)last_set +
-				       policy->expire,
-				       time(NULL));
-
-			return PAM_AUTHTOK_EXPIRED;
-		}
-
-		/* inform about logon type */
-		_pam_warn_logon_type(ctx, user, user_info->user_flags);
-
-		/* inform about krb5 failures */
-		_pam_warn_krb5_failure(ctx, user, user_info->user_flags);
-
-		/* set some info3 info for other modules in the stack */
-		_pam_set_data_info3(ctx, user_info);
-
-		/* put krb5ccname into env */
-		_pam_setup_krb5_env(ctx, info);
-
-		/* If winbindd returned a username, return the pointer to it
-		 * here. */
-		_pam_setup_unix_username(ctx, user_ret, info);
-	}
-
- done:
-	if (logon.blobs) {
-		wbcFreeMemory(logon.blobs);
-	}
-	if (info && info->blobs) {
-		wbcFreeMemory(info->blobs);
-	}
-	if (error && !p_error) {
-		wbcFreeMemory(error);
-	}
-	if (info && !p_info) {
-		wbcFreeMemory(info);
-	}
-	if (policy && !p_policy) {
-		wbcFreeMemory(policy);
-	}
-
-	return ret;
-}
-
-/* talk to winbindd */
-static int winbind_chauthtok_request(struct pwb_context *ctx,
-				     const char *user,
-				     const char *oldpass,
-				     const char *newpass,
-				     time_t pwd_last_set)
-{
-	wbcErr wbc_status;
-	struct wbcChangePasswordParams params;
-	struct wbcAuthErrorInfo *error = NULL;
-	struct wbcUserPasswordPolicyInfo *policy = NULL;
-	enum wbcPasswordChangeRejectReason reject_reason = -1;
-	uint32_t flags = 0;
-
-	int i;
-	const char *codes[] = {
-		"NT_STATUS_BACKUP_CONTROLLER",
-		"NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND",
-		"NT_STATUS_NO_LOGON_SERVERS",
-		"NT_STATUS_ACCESS_DENIED",
-		"NT_STATUS_PWD_TOO_SHORT", /* TODO: tell the min pwd length ? */
-		"NT_STATUS_PWD_TOO_RECENT", /* TODO: tell the minage ? */
-		"NT_STATUS_PWD_HISTORY_CONFLICT" /* TODO: tell the history length ? */
-	};
-	int ret = PAM_AUTH_ERR;
-
-	ZERO_STRUCT(params);
-
-	if (ctx->ctrl & WINBIND_KRB5_AUTH) {
-		flags |= WBFLAG_PAM_KRB5 |
-			 WBFLAG_PAM_CONTACT_TRUSTDOM;
-	}
-
-	if (ctx->ctrl & WINBIND_CACHED_LOGIN) {
-		flags |= WBFLAG_PAM_CACHED_LOGIN;
-	}
-
-	params.account_name		= user;
-	params.level			= WBC_AUTH_USER_LEVEL_PLAIN;
-	params.old_password.plaintext	= oldpass;
-	params.new_password.plaintext	= newpass;
-	params.flags			= flags;
-
-	wbc_status = wbcChangeUserPasswordEx(&params, &error, &reject_reason, &policy);
-	ret = wbc_auth_error_to_pam_error(ctx, error, wbc_status,
-					  user, "wbcChangeUserPasswordEx");
-
-	if (WBC_ERROR_IS_OK(wbc_status)) {
-		_pam_log(ctx, LOG_NOTICE,
-			 "user '%s' password changed", user);
-		return PAM_SUCCESS;
-	}
-
-	if (!error) {
-		wbcFreeMemory(policy);
-		return ret;
-	}
-
-	for (i=0; i<ARRAY_SIZE(codes); i++) {
-		int _ret = ret;
-		if (_pam_check_remark_auth_err(ctx, error, codes[i], &_ret)) {
-			ret = _ret;
-			goto done;
-		}
-	}
-
-	if (!strcasecmp(error->nt_string,
-			"NT_STATUS_PASSWORD_RESTRICTION")) {
-
-		char *pwd_restriction_string = NULL;
-		SMB_TIME_T min_pwd_age = 0;
-
-		if (policy) {
-			min_pwd_age	= policy->min_passwordage;
-		}
-
-		/* FIXME: avoid to send multiple PAM messages after another */
-		switch (reject_reason) {
-			case -1:
-				break;
-			case WBC_PWD_CHANGE_REJECT_OTHER:
-				if ((min_pwd_age > 0) &&
-				    (pwd_last_set + min_pwd_age > time(NULL))) {
-					PAM_WB_REMARK_DIRECT(ctx,
-					     "NT_STATUS_PWD_TOO_RECENT");
-				}
-				break;
-			case WBC_PWD_CHANGE_REJECT_TOO_SHORT:
-				PAM_WB_REMARK_DIRECT(ctx,
-					"NT_STATUS_PWD_TOO_SHORT");
-				break;
-			case WBC_PWD_CHANGE_REJECT_IN_HISTORY:
-				PAM_WB_REMARK_DIRECT(ctx,
-					"NT_STATUS_PWD_HISTORY_CONFLICT");
-				break;
-			case WBC_PWD_CHANGE_REJECT_COMPLEXITY:
-				_make_remark(ctx, PAM_ERROR_MSG,
-					     _("Password does not meet "
-					       "complexity requirements"));
-				break;
-			default:
-				_pam_log_debug(ctx, LOG_DEBUG,
-					       "unknown password change "
-					       "reject reason: %d",
-					       reject_reason);
-				break;
-		}
-
-		pwd_restriction_string =
-			_pam_compose_pwd_restriction_string(ctx, policy);
-		if (pwd_restriction_string) {
-			_make_remark(ctx, PAM_ERROR_MSG,
-				     pwd_restriction_string);
-			TALLOC_FREE(pwd_restriction_string);
-		}
-	}
- done:
-	wbcFreeMemory(error);
-	wbcFreeMemory(policy);
-
-	return ret;
-}
-
-/*
- * Checks if a user has an account
- *
- * return values:
- *	 1  = User not found
- *	 0  = OK
- * 	-1  = System error
- */
-static int valid_user(struct pwb_context *ctx,
-		      const char *user)
-{
-	/* check not only if the user is available over NSS calls, also make
-	 * sure it's really a winbind user, this is important when stacking PAM
-	 * modules in the 'account' or 'password' facility. */
-
-	wbcErr wbc_status;
-	struct passwd *pwd = NULL;
-	struct passwd *wb_pwd = NULL;
-
-	pwd = getpwnam(user);
-	if (pwd == NULL) {
-		return 1;
-	}
-
-	wbc_status = wbcGetpwnam(user, &wb_pwd);
-	wbcFreeMemory(wb_pwd);
-	if (!WBC_ERROR_IS_OK(wbc_status)) {
-		_pam_log(ctx, LOG_DEBUG, "valid_user: wbcGetpwnam gave %s\n",
-			wbcErrorString(wbc_status));
-	}
-
-	switch (wbc_status) {
-		case WBC_ERR_UNKNOWN_USER:
-			return 1;
-		case WBC_ERR_SUCCESS:
-			return 0;
-		default:
-			break;
-	}
-	return -1;
-}
-
-static char *_pam_delete(register char *xx)
-{
-	_pam_overwrite(xx);
-	_pam_drop(xx);
-	return NULL;
-}
-
-/*
- * obtain a password from the user
- */
-
-static int _winbind_read_password(struct pwb_context *ctx,
-				  unsigned int ctrl,
-				  const char *comment,
-				  const char *prompt1,
-				  const char *prompt2,
-				  const char **pass)
-{
-	int authtok_flag;
-	int retval;
-	const char *item;
-	char *token;
-
-	_pam_log(ctx, LOG_DEBUG, "getting password (0x%08x)", ctrl);
-
-	/*
-	 * make sure nothing inappropriate gets returned
-	 */
-
-	*pass = token = NULL;
-
-	/*
-	 * which authentication token are we getting?
-	 */
-
-	if (on(WINBIND__OLD_PASSWORD, ctrl)) {
-		authtok_flag = PAM_OLDAUTHTOK;
-	} else {
-		authtok_flag = PAM_AUTHTOK;
-	}
-
-	/*
-	 * should we obtain the password from a PAM item ?
-	 */
-
-	if (on(WINBIND_TRY_FIRST_PASS_ARG, ctrl) ||
-	    on(WINBIND_USE_FIRST_PASS_ARG, ctrl)) {
-		retval = _pam_get_item(ctx->pamh, authtok_flag, &item);
-		if (retval != PAM_SUCCESS) {
-			/* very strange. */
-			_pam_log(ctx, LOG_ALERT,
-				 "pam_get_item returned error "
-				 "to unix-read-password");
-			return retval;
-		} else if (item != NULL) {	/* we have a password! */
-			*pass = item;
-			item = NULL;
-			_pam_log(ctx, LOG_DEBUG,
-				 "pam_get_item returned a password");
-			return PAM_SUCCESS;
-		} else if (on(WINBIND_USE_FIRST_PASS_ARG, ctrl)) {
-			return PAM_AUTHTOK_RECOVER_ERR;	/* didn't work */
-		} else if (on(WINBIND_USE_AUTHTOK_ARG, ctrl)
-			   && off(WINBIND__OLD_PASSWORD, ctrl)) {
-			return PAM_AUTHTOK_RECOVER_ERR;
-		}
-	}
-	/*
-	 * getting here implies we will have to get the password from the
-	 * user directly.
-	 */
-
-	{
-		struct pam_message msg[3], *pmsg[3];
-		struct pam_response *resp;
-		int i, replies;
-
-		/* prepare to converse */
-
-		if (comment != NULL && off(ctrl, WINBIND_SILENT)) {
-			pmsg[0] = &msg[0];
-			msg[0].msg_style = PAM_TEXT_INFO;
-			msg[0].msg = discard_const_p(char, comment);
-			i = 1;
-		} else {
-			i = 0;
-		}
-
-		pmsg[i] = &msg[i];
-		msg[i].msg_style = PAM_PROMPT_ECHO_OFF;
-		msg[i++].msg = discard_const_p(char, prompt1);
-		replies = 1;
-
-		if (prompt2 != NULL) {
-			pmsg[i] = &msg[i];
-			msg[i].msg_style = PAM_PROMPT_ECHO_OFF;
-			msg[i++].msg = discard_const_p(char, prompt2);
-			++replies;
-		}
-		/* so call the conversation expecting i responses */
-		resp = NULL;
-		retval = converse(ctx->pamh, i, pmsg, &resp);
-		if (resp == NULL) {
-			if (retval == PAM_SUCCESS) {
-				retval = PAM_AUTHTOK_RECOVER_ERR;
-			}
-			goto done;
-		}
-		if (retval != PAM_SUCCESS) {
-			_pam_drop_reply(resp, i);
-			goto done;
-		}
-
-		/* interpret the response */
-
-		token = x_strdup(resp[i - replies].resp);
-		if (!token) {
-			_pam_log(ctx, LOG_NOTICE,
-				 "could not recover "
-				 "authentication token");
-			retval = PAM_AUTHTOK_RECOVER_ERR;
-			goto done;
-		}
-
-		if (replies == 2) {
-			/* verify that password entered correctly */
-			if (!resp[i - 1].resp ||
-			    strcmp(token, resp[i - 1].resp)) {
-				_pam_delete(token);	/* mistyped */
-				retval = PAM_AUTHTOK_RECOVER_ERR;
-				_make_remark(ctx, PAM_ERROR_MSG,
-					     MISTYPED_PASS);
-			}
-		}
-
-		/*
-		 * tidy up the conversation (resp_retcode) is ignored
-		 * -- what is it for anyway? AGM
-		 */
-		_pam_drop_reply(resp, i);
-	}
-
- done:
-	if (retval != PAM_SUCCESS) {
-		_pam_log_debug(ctx, LOG_DEBUG,
-			       "unable to obtain a password");
-		return retval;
-	}
-	/* 'token' is the entered password */
-
-	/* we store this password as an item */
-
-	retval = pam_set_item(ctx->pamh, authtok_flag, token);
-	_pam_delete(token);	/* clean it up */
-	if (retval != PAM_SUCCESS ||
-	    (retval = _pam_get_item(ctx->pamh, authtok_flag, &item)) != PAM_SUCCESS) {
-
-		_pam_log(ctx, LOG_CRIT, "error manipulating password");
-		return retval;
-
-	}
-
-	*pass = item;
-	item = NULL;		/* break link to password */
-
-	return PAM_SUCCESS;
-}
-
-static const char *get_conf_item_string(struct pwb_context *ctx,
-					const char *item,
-					int config_flag)
-{
-	int i = 0;
-	const char *parm_opt = NULL;
-
-	if (!(ctx->ctrl & config_flag)) {
-		goto out;
-	}
-
-	/* let the pam opt take precedence over the pam_winbind.conf option */
-	for (i=0; i<ctx->argc; i++) {
-
-		if ((strncmp(ctx->argv[i], item, strlen(item)) == 0)) {
-			char *p;
-
-			if ((p = strchr(ctx->argv[i], '=')) == NULL) {
-				_pam_log(ctx, LOG_INFO,
-					 "no \"=\" delimiter for \"%s\" found\n",
-					 item);
-				goto out;
-			}
-			_pam_log_debug(ctx, LOG_INFO,
-				       "PAM config: %s '%s'\n", item, p+1);
-			return p + 1;
-		}
-	}
-
-	if (ctx->dict) {
-		char *key = NULL;
-
-		key = talloc_asprintf(ctx, "global:%s", item);
-		if (!key) {
-			goto out;
-		}
-
-		parm_opt = iniparser_getstr(ctx->dict, key);
-		TALLOC_FREE(key);
-
-		_pam_log_debug(ctx, LOG_INFO, "CONFIG file: %s '%s'\n",
-			       item, parm_opt);
-	}
-out:
-	return parm_opt;
-}
-
-static int get_config_item_int(struct pwb_context *ctx,
-			       const char *item,
-			       int config_flag)
-{
-	int i, parm_opt = -1;
-
-	if (!(ctx->ctrl & config_flag)) {
-		goto out;
-	}
-
-	/* let the pam opt take precedence over the pam_winbind.conf option */
-	for (i = 0; i < ctx->argc; i++) {
-
-		if ((strncmp(ctx->argv[i], item, strlen(item)) == 0)) {
-			char *p;
-
-			if ((p = strchr(ctx->argv[i], '=')) == NULL) {
-				_pam_log(ctx, LOG_INFO,
-					 "no \"=\" delimiter for \"%s\" found\n",
-					 item);
-				goto out;
-			}
-			parm_opt = atoi(p + 1);
-			_pam_log_debug(ctx, LOG_INFO,
-				       "PAM config: %s '%d'\n",
-				       item, parm_opt);
-			return parm_opt;
-		}
-	}
-
-	if (ctx->dict) {
-		char *key = NULL;
-
-		key = talloc_asprintf(ctx, "global:%s", item);
-		if (!key) {
-			goto out;
-		}
-
-		parm_opt = iniparser_getint(ctx->dict, key, -1);
-		TALLOC_FREE(key);
-
-		_pam_log_debug(ctx, LOG_INFO,
-			       "CONFIG file: %s '%d'\n",
-			       item, parm_opt);
-	}
-out:
-	return parm_opt;
-}
-
-static const char *get_krb5_cc_type_from_config(struct pwb_context *ctx)
-{
-	return get_conf_item_string(ctx, "krb5_ccache_type",
-				    WINBIND_KRB5_CCACHE_TYPE);
-}
-
-static const char *get_member_from_config(struct pwb_context *ctx)
-{
-	const char *ret = NULL;
-	ret = get_conf_item_string(ctx, "require_membership_of",
-				   WINBIND_REQUIRED_MEMBERSHIP);
-	if (ret) {
-		return ret;
-	}
-	return get_conf_item_string(ctx, "require-membership-of",
-				    WINBIND_REQUIRED_MEMBERSHIP);
-}
-
-static int get_warn_pwd_expire_from_config(struct pwb_context *ctx)
-{
-	int ret;
-	ret = get_config_item_int(ctx, "warn_pwd_expire",
-				  WINBIND_WARN_PWD_EXPIRE);
-	/* no or broken setting */
-	if (ret <= 0) {
-		return DEFAULT_DAYS_TO_WARN_BEFORE_PWD_EXPIRES;
-	}
-	return ret;
-}
-
-/**
- * Retrieve the winbind separator.
- *
- * @param ctx PAM winbind context.
- *
- * @return string separator character. NULL on failure.
- */
-
-static char winbind_get_separator(struct pwb_context *ctx)
-{
-	wbcErr wbc_status;
-	static struct wbcInterfaceDetails *details = NULL;
-
-	wbc_status = wbcInterfaceDetails(&details);
-	if (!WBC_ERROR_IS_OK(wbc_status)) {
-		_pam_log(ctx, LOG_ERR,
-			 "Could not retrieve winbind interface details: %s",
-			 wbcErrorString(wbc_status));
-		return '\0';
-	}
-
-	if (!details) {
-		return '\0';
-	}
-
-	return details->winbind_separator;
-}
-
-
-/**
- * Convert a upn to a name.
- *
- * @param ctx PAM winbind context.
- * @param upn  USer UPN to be trabslated.
- *
- * @return converted name. NULL pointer on failure. Caller needs to free.
- */
-
-static char* winbind_upn_to_username(struct pwb_context *ctx,
-				     const char *upn)
-{
-	char sep;
-	wbcErr wbc_status = WBC_ERR_UNKNOWN_FAILURE;
-	struct wbcDomainSid sid;
-	enum wbcSidType type;
-	char *domain;
-	char *name;
-
-	/* This cannot work when the winbind separator = @ */
-
-	sep = winbind_get_separator(ctx);
-	if (!sep || sep == '@') {
-		return NULL;
-	}
-
-	/* Convert the UPN to a SID */
-
-	wbc_status = wbcLookupName("", upn, &sid, &type);
-	if (!WBC_ERROR_IS_OK(wbc_status)) {
-		return NULL;
-	}
-
-	/* Convert the the SID back to the sAMAccountName */
-
-	wbc_status = wbcLookupSid(&sid, &domain, &name, &type);
-	if (!WBC_ERROR_IS_OK(wbc_status)) {
-		return NULL;
-	}
-
-	return talloc_asprintf(ctx, "%s\\%s", domain, name);
-}
-
-static int _pam_delete_cred(pam_handle_t *pamh, int flags,
-			 int argc, const char **argv)
-{
-	int retval = PAM_SUCCESS;
-	struct pwb_context *ctx = NULL;
-	struct wbcLogoffUserParams logoff;
-	struct wbcAuthErrorInfo *error = NULL;
-	const char *user;
-	wbcErr wbc_status = WBC_ERR_SUCCESS;
-
-	retval = _pam_winbind_init_context(pamh, flags, argc, argv, &ctx);
-	if (retval) {
-		goto out;
-	}
-
-	_PAM_LOG_FUNCTION_ENTER("_pam_delete_cred", ctx);
-
-	if (ctx->ctrl & WINBIND_KRB5_AUTH) {
-
-		/* destroy the ccache here */
-
-		uint32_t wbc_flags = 0;
-		const char *ccname = NULL;
-		struct passwd *pwd = NULL;
-
-		retval = pam_get_user(pamh, &user, _("Username: "));
-		if (retval) {
-			_pam_log(ctx, LOG_ERR,
-				 "could not identify user");
-			goto out;
-		}
-
-		if (user == NULL) {
-			_pam_log(ctx, LOG_ERR,
-				 "username was NULL!");
-			retval = PAM_USER_UNKNOWN;
-			goto out;
-		}
-
-		_pam_log_debug(ctx, LOG_DEBUG,
-			       "username [%s] obtained", user);
-
-		ccname = pam_getenv(pamh, "KRB5CCNAME");
-		if (ccname == NULL) {
-			_pam_log_debug(ctx, LOG_DEBUG,
-				       "user has no KRB5CCNAME environment");
-		}
-
-		pwd = getpwnam(user);
-		if (pwd == NULL) {
-			retval = PAM_USER_UNKNOWN;
-			goto out;
-		}
-
-		wbc_flags = WBFLAG_PAM_KRB5 |
-			WBFLAG_PAM_CONTACT_TRUSTDOM;
-
-		ZERO_STRUCT(logoff);
-
-		logoff.username		= user;
-
-		if (ccname) {
-			wbc_status = wbcAddNamedBlob(&logoff.num_blobs,
-						     &logoff.blobs,
-						     "ccfilename",
-						     0,
-						     (uint8_t *)ccname,
-						     strlen(ccname)+1);
-			if (!WBC_ERROR_IS_OK(wbc_status)) {
-				goto out;
-			}
-		}
-
-		wbc_status = wbcAddNamedBlob(&logoff.num_blobs,
-					     &logoff.blobs,
-					     "flags",
-					     0,
-					     (uint8_t *)&wbc_flags,
-					     sizeof(wbc_flags));
-		if (!WBC_ERROR_IS_OK(wbc_status)) {
-			goto out;
-		}
-
-		wbc_status = wbcAddNamedBlob(&logoff.num_blobs,
-					     &logoff.blobs,
-					     "user_uid",
-					     0,
-					     (uint8_t *)&pwd->pw_uid,
-					     sizeof(pwd->pw_uid));
-		if (!WBC_ERROR_IS_OK(wbc_status)) {
-			goto out;
-		}
-
-		wbc_status = wbcLogoffUserEx(&logoff, &error);
-		retval = wbc_auth_error_to_pam_error(ctx, error, wbc_status,
-						     user, "wbcLogoffUser");
-		wbcFreeMemory(error);
-		wbcFreeMemory(logoff.blobs);
-
-		if (!WBC_ERROR_IS_OK(wbc_status)) {
-			_pam_log(ctx, LOG_INFO,
-				 "failed to logoff user %s: %s\n",
-					 user, wbcErrorString(wbc_status));
-		}
-	}
-
-out:
-	if (logoff.blobs) {
-		wbcFreeMemory(logoff.blobs);
-	}
-
-	if (!WBC_ERROR_IS_OK(wbc_status)) {
-		retval = wbc_auth_error_to_pam_error(ctx, error, wbc_status,
-		     user, "wbcLogoffUser");
-	}
-
-	/*
-	 * Delete the krb5 ccname variable from the PAM environment
-	 * if it was set by winbind.
-	 */
-	if (ctx->ctrl & WINBIND_KRB5_AUTH) {
-		pam_putenv(pamh, "KRB5CCNAME");
-	}
-
-	_PAM_LOG_FUNCTION_LEAVE("_pam_delete_cred", ctx, retval);
-
-	TALLOC_FREE(ctx);
-
-	return retval;
-}
-
-PAM_EXTERN
-int pam_sm_authenticate(pam_handle_t *pamh, int flags,
-			int argc, const char **argv)
-{
-	const char *username;
-	const char *password;
-	const char *member = NULL;
-	const char *cctype = NULL;
-	int warn_pwd_expire;
-	int retval = PAM_AUTH_ERR;
-	char *username_ret = NULL;
-	char *new_authtok_required = NULL;
-	char *real_username = NULL;
-	struct pwb_context *ctx = NULL;
-
-	retval = _pam_winbind_init_context(pamh, flags, argc, argv, &ctx);
-	if (retval) {
-		goto out;
-	}
-
-	_PAM_LOG_FUNCTION_ENTER("pam_sm_authenticate", ctx);
-
-	/* Get the username */
-	retval = pam_get_user(pamh, &username, NULL);
-	if ((retval != PAM_SUCCESS) || (!username)) {
-		_pam_log_debug(ctx, LOG_DEBUG,
-			       "can not get the username");
-		retval = PAM_SERVICE_ERR;
-		goto out;
-	}
-
-
-#if defined(AIX)
-	/* Decode the user name since AIX does not support logn user
-	   names by default.  The name is encoded as _#uid.  */
-
-	if (username[0] == '_') {
-		uid_t id = atoi(&username[1]);
-		struct passwd *pw = NULL;
-
-		if ((id!=0) && ((pw = getpwuid(id)) != NULL)) {
-			real_username = strdup(pw->pw_name);
-		}
-	}
-#endif
-
-	if (!real_username) {
-		/* Just making a copy of the username we got from PAM */
-		if ((real_username = strdup(username)) == NULL) {
-			_pam_log_debug(ctx, LOG_DEBUG,
-				       "memory allocation failure when copying "
-				       "username");
-			retval = PAM_SERVICE_ERR;
-			goto out;
-		}
-	}
-
-	/* Maybe this was a UPN */
-
-	if (strchr(real_username, '@') != NULL) {
-		char *samaccountname = NULL;
-
-		samaccountname = winbind_upn_to_username(ctx,
-							 real_username);
-		if (samaccountname) {
-			free(real_username);
-			real_username = strdup(samaccountname);
-		}
-	}
-
-	retval = _winbind_read_password(ctx, ctx->ctrl, NULL,
-					_("Password: "), NULL,
-					&password);
-
-	if (retval != PAM_SUCCESS) {
-		_pam_log(ctx, LOG_ERR,
-			 "Could not retrieve user's password");
-		retval = PAM_AUTHTOK_ERR;
-		goto out;
-	}
-
-	/* Let's not give too much away in the log file */
-
-#ifdef DEBUG_PASSWORD
-	_pam_log_debug(ctx, LOG_INFO,
-		       "Verify user '%s' with password '%s'",
-		       real_username, password);
-#else
-	_pam_log_debug(ctx, LOG_INFO,
-		       "Verify user '%s'", real_username);
-#endif
-
-	member = get_member_from_config(ctx);
-	cctype = get_krb5_cc_type_from_config(ctx);
-	warn_pwd_expire = get_warn_pwd_expire_from_config(ctx);
-
-	/* Now use the username to look up password */
-	retval = winbind_auth_request(ctx, real_username, password,
-				      member, cctype, warn_pwd_expire,
-				      NULL, NULL, NULL,
-				      NULL, &username_ret);
-
-	if (retval == PAM_NEW_AUTHTOK_REQD ||
-	    retval == PAM_AUTHTOK_EXPIRED) {
-
-		char *new_authtok_required_during_auth = NULL;
-
-		new_authtok_required = talloc_asprintf(NULL, "%d", retval);
-		if (!new_authtok_required) {
-			retval = PAM_BUF_ERR;
-			goto out;
-		}
-
-		pam_set_data(pamh, PAM_WINBIND_NEW_AUTHTOK_REQD,
-			     new_authtok_required,
-			     _pam_winbind_cleanup_func);
-
-		retval = PAM_SUCCESS;
-
-		new_authtok_required_during_auth = talloc_asprintf(NULL, "%d", true);
-		if (!new_authtok_required_during_auth) {
-			retval = PAM_BUF_ERR;
-			goto out;
-		}
-
-		pam_set_data(pamh, PAM_WINBIND_NEW_AUTHTOK_REQD_DURING_AUTH,
-			     new_authtok_required_during_auth,
-			     _pam_winbind_cleanup_func);
-
-		goto out;
-	}
-
-out:
-	if (username_ret) {
-		pam_set_item (pamh, PAM_USER, username_ret);
-		_pam_log_debug(ctx, LOG_INFO,
-			       "Returned user was '%s'", username_ret);
-		free(username_ret);
-	}
-
-	if (real_username) {
-		free(real_username);
-	}
-
-	if (!new_authtok_required) {
-		pam_set_data(pamh, PAM_WINBIND_NEW_AUTHTOK_REQD, NULL, NULL);
-	}
-
-	if (retval != PAM_SUCCESS) {
-		_pam_free_data_info3(pamh);
-	}
-
-	_PAM_LOG_FUNCTION_LEAVE("pam_sm_authenticate", ctx, retval);
-
-	TALLOC_FREE(ctx);
-
-	return retval;
-}
-
-PAM_EXTERN
-int pam_sm_setcred(pam_handle_t *pamh, int flags,
-		   int argc, const char **argv)
-{
-	int ret = PAM_SYSTEM_ERR;
-	struct pwb_context *ctx = NULL;
-
-	ret = _pam_winbind_init_context(pamh, flags, argc, argv, &ctx);
-	if (ret) {
-		goto out;
-	}
-
-	_PAM_LOG_FUNCTION_ENTER("pam_sm_setcred", ctx);
-
-	switch (flags & ~PAM_SILENT) {
-
-		case PAM_DELETE_CRED:
-			ret = _pam_delete_cred(pamh, flags, argc, argv);
-			break;
-		case PAM_REFRESH_CRED:
-			_pam_log_debug(ctx, LOG_WARNING,
-				       "PAM_REFRESH_CRED not implemented");
-			ret = PAM_SUCCESS;
-			break;
-		case PAM_REINITIALIZE_CRED:
-			_pam_log_debug(ctx, LOG_WARNING,
-				       "PAM_REINITIALIZE_CRED not implemented");
-			ret = PAM_SUCCESS;
-			break;
-		case PAM_ESTABLISH_CRED:
-			_pam_log_debug(ctx, LOG_WARNING,
-				       "PAM_ESTABLISH_CRED not implemented");
-			ret = PAM_SUCCESS;
-			break;
-		default:
-			ret = PAM_SYSTEM_ERR;
-			break;
-	}
-
- out:
-
-	_PAM_LOG_FUNCTION_LEAVE("pam_sm_setcred", ctx, ret);
-
-	TALLOC_FREE(ctx);
-
-	return ret;
-}
-
-/*
- * Account management. We want to verify that the account exists
- * before returning PAM_SUCCESS
- */
-PAM_EXTERN
-int pam_sm_acct_mgmt(pam_handle_t *pamh, int flags,
-		   int argc, const char **argv)
-{
-	const char *username;
-	int ret = PAM_USER_UNKNOWN;
-	void *tmp = NULL;
-	struct pwb_context *ctx = NULL;
-
-	ret = _pam_winbind_init_context(pamh, flags, argc, argv, &ctx);
-	if (ret) {
-		goto out;
-	}
-
-	_PAM_LOG_FUNCTION_ENTER("pam_sm_acct_mgmt", ctx);
-
-
-	/* Get the username */
-	ret = pam_get_user(pamh, &username, NULL);
-	if ((ret != PAM_SUCCESS) || (!username)) {
-		_pam_log_debug(ctx, LOG_DEBUG,
-			       "can not get the username");
-		ret = PAM_SERVICE_ERR;
-		goto out;
-	}
-
-	/* Verify the username */
-	ret = valid_user(ctx, username);
-	switch (ret) {
-	case -1:
-		/* some sort of system error. The log was already printed */
-		ret = PAM_SERVICE_ERR;
-		goto out;
-	case 1:
-		/* the user does not exist */
-		_pam_log_debug(ctx, LOG_NOTICE, "user '%s' not found",
-			       username);
-		if (ctx->ctrl & WINBIND_UNKNOWN_OK_ARG) {
-			ret = PAM_IGNORE;
-			goto out;
-		}
-		ret = PAM_USER_UNKNOWN;
-		goto out;
-	case 0:
-		pam_get_data(pamh, PAM_WINBIND_NEW_AUTHTOK_REQD,
-			     (const void **)&tmp);
-		if (tmp != NULL) {
-			ret = atoi((const char *)tmp);
-			switch (ret) {
-			case PAM_AUTHTOK_EXPIRED:
-				/* fall through, since new token is required in this case */
-			case PAM_NEW_AUTHTOK_REQD:
-				_pam_log(ctx, LOG_WARNING,
-					 "pam_sm_acct_mgmt success but %s is set",
-					 PAM_WINBIND_NEW_AUTHTOK_REQD);
-				_pam_log(ctx, LOG_NOTICE,
-					 "user '%s' needs new password",
-					 username);
-				/* PAM_AUTHTOKEN_REQD does not exist, but is documented in the manpage */
-				ret = PAM_NEW_AUTHTOK_REQD;
-				goto out;
-			default:
-				_pam_log(ctx, LOG_WARNING,
-					 "pam_sm_acct_mgmt success");
-				_pam_log(ctx, LOG_NOTICE,
-					 "user '%s' granted access", username);
-				ret = PAM_SUCCESS;
-				goto out;
-			}
-		}
-
-		/* Otherwise, the authentication looked good */
-		_pam_log(ctx, LOG_NOTICE,
-			 "user '%s' granted access", username);
-		ret = PAM_SUCCESS;
-		goto out;
-	default:
-		/* we don't know anything about this return value */
-		_pam_log(ctx, LOG_ERR,
-			 "internal module error (ret = %d, user = '%s')",
-			 ret, username);
-		ret = PAM_SERVICE_ERR;
-		goto out;
-	}
-
-	/* should not be reached */
-	ret = PAM_IGNORE;
-
- out:
-
-	_PAM_LOG_FUNCTION_LEAVE("pam_sm_acct_mgmt", ctx, ret);
-
-	TALLOC_FREE(ctx);
-
-	return ret;
-}
-
-PAM_EXTERN
-int pam_sm_open_session(pam_handle_t *pamh, int flags,
-			int argc, const char **argv)
-{
-	int ret = PAM_SUCCESS;
-	struct pwb_context *ctx = NULL;
-
-	ret = _pam_winbind_init_context(pamh, flags, argc, argv, &ctx);
-	if (ret) {
-		goto out;
-	}
-
-	_PAM_LOG_FUNCTION_ENTER("pam_sm_open_session", ctx);
-
-	if (ctx->ctrl & WINBIND_MKHOMEDIR) {
-		/* check and create homedir */
-		ret = _pam_mkhomedir(ctx);
-	}
- out:
-	_PAM_LOG_FUNCTION_LEAVE("pam_sm_open_session", ctx, ret);
-
-	TALLOC_FREE(ctx);
-
-	return ret;
-}
-
-PAM_EXTERN
-int pam_sm_close_session(pam_handle_t *pamh, int flags,
-			 int argc, const char **argv)
-{
-	int ret = PAM_SUCCESS;
-	struct pwb_context *ctx = NULL;
-
-	ret = _pam_winbind_init_context(pamh, flags, argc, argv, &ctx);
-	if (ret) {
-		goto out;
-	}
-
-	_PAM_LOG_FUNCTION_ENTER("pam_sm_close_session", ctx);
-
-out:
-	_PAM_LOG_FUNCTION_LEAVE("pam_sm_close_session", ctx, ret);
-
-	TALLOC_FREE(ctx);
-
-	return ret;
-}
-
-/**
- * evaluate whether we need to re-authenticate with kerberos after a
- * password change
- *
- * @param ctx PAM winbind context.
- * @param user The username
- *
- * @return boolean Returns true if required, false if not.
- */
-
-static bool _pam_require_krb5_auth_after_chauthtok(struct pwb_context *ctx,
-						   const char *user)
-{
-
-	/* Make sure that we only do this if a) the chauthtok got initiated
-	 * during a logon attempt (authenticate->acct_mgmt->chauthtok) b) any
-	 * later password change via the "passwd" command if done by the user
-	 * itself
-	 * NB. If we login from gdm or xdm and the password expires,
-	 * we change the password, but there is no memory cache.
-	 * Thus, even for passthrough login, we should do the
-	 * authentication again to update memory cache.
-	 * --- BoYang
-	 * */
-
-	char *new_authtok_reqd_during_auth = NULL;
-	struct passwd *pwd = NULL;
-
-	_pam_get_data(ctx->pamh, PAM_WINBIND_NEW_AUTHTOK_REQD_DURING_AUTH,
-		      &new_authtok_reqd_during_auth);
-	pam_set_data(ctx->pamh, PAM_WINBIND_NEW_AUTHTOK_REQD_DURING_AUTH,
-		     NULL, NULL);
-
-	if (new_authtok_reqd_during_auth) {
-		return true;
-	}
-
-	pwd = getpwnam(user);
-	if (!pwd) {
-		return false;
-	}
-
-	if (getuid() == pwd->pw_uid) {
-		return true;
-	}
-
-	return false;
-}
-
-
-PAM_EXTERN
-int pam_sm_chauthtok(pam_handle_t * pamh, int flags,
-		     int argc, const char **argv)
-{
-	unsigned int lctrl;
-	int ret;
-	bool cached_login = false;
-
-	/* <DO NOT free() THESE> */
-	const char *user;
-	char *pass_old, *pass_new;
-	/* </DO NOT free() THESE> */
-
-	char *Announce;
-
-	int retry = 0;
-	char *username_ret = NULL;
-	struct wbcAuthErrorInfo *error = NULL;
-	struct pwb_context *ctx = NULL;
-
-	ret = _pam_winbind_init_context(pamh, flags, argc, argv, &ctx);
-	if (ret) {
-		goto out;
-	}
-
-	_PAM_LOG_FUNCTION_ENTER("pam_sm_chauthtok", ctx);
-
-	cached_login = (ctx->ctrl & WINBIND_CACHED_LOGIN);
-
-	/* clearing offline bit for auth */
-	ctx->ctrl &= ~WINBIND_CACHED_LOGIN;
-
-	/*
-	 * First get the name of a user
-	 */
-	ret = pam_get_user(pamh, &user, _("Username: "));
-	if (ret) {
-		_pam_log(ctx, LOG_ERR,
-			 "password - could not identify user");
-		goto out;
-	}
-
-	if (user == NULL) {
-		_pam_log(ctx, LOG_ERR, "username was NULL!");
-		ret = PAM_USER_UNKNOWN;
-		goto out;
-	}
-
-	_pam_log_debug(ctx, LOG_DEBUG, "username [%s] obtained", user);
-
-	/* check if this is really a user in winbindd, not only in NSS */
-	ret = valid_user(ctx, user);
-	switch (ret) {
-		case 1:
-			ret = PAM_USER_UNKNOWN;
-			goto out;
-		case -1:
-			ret = PAM_SYSTEM_ERR;
-			goto out;
-		default:
-			break;
-	}
-
-	/*
-	 * obtain and verify the current password (OLDAUTHTOK) for
-	 * the user.
-	 */
-
-	if (flags & PAM_PRELIM_CHECK) {
-		time_t pwdlastset_prelim = 0;
-
-		/* instruct user what is happening */
-
-#define greeting _("Changing password for")
-		Announce = talloc_asprintf(ctx, "%s %s", greeting, user);
-		if (!Announce) {
-			_pam_log(ctx, LOG_CRIT,
-				 "password - out of memory");
-			ret = PAM_BUF_ERR;
-			goto out;
-		}
-#undef greeting
-
-		lctrl = ctx->ctrl | WINBIND__OLD_PASSWORD;
-		ret = _winbind_read_password(ctx, lctrl,
-						Announce,
-						_("(current) NT password: "),
-						NULL,
-						(const char **) &pass_old);
-		TALLOC_FREE(Announce);
-		if (ret != PAM_SUCCESS) {
-			_pam_log(ctx, LOG_NOTICE,
-				 "password - (old) token not obtained");
-			goto out;
-		}
-
-		/* verify that this is the password for this user */
-
-		ret = winbind_auth_request(ctx, user, pass_old,
-					   NULL, NULL, 0,
-					   &error, NULL, NULL,
-					   &pwdlastset_prelim, NULL);
-
-		if (ret != PAM_ACCT_EXPIRED &&
-		    ret != PAM_AUTHTOK_EXPIRED &&
-		    ret != PAM_NEW_AUTHTOK_REQD &&
-		    ret != PAM_SUCCESS) {
-			pass_old = NULL;
-			goto out;
-		}
-
-		pam_set_data(pamh, PAM_WINBIND_PWD_LAST_SET,
-			     (void *)pwdlastset_prelim, NULL);
-
-		ret = pam_set_item(pamh, PAM_OLDAUTHTOK,
-				   (const void *) pass_old);
-		pass_old = NULL;
-		if (ret != PAM_SUCCESS) {
-			_pam_log(ctx, LOG_CRIT,
-				 "failed to set PAM_OLDAUTHTOK");
-		}
-	} else if (flags & PAM_UPDATE_AUTHTOK) {
-
-		time_t pwdlastset_update = 0;
-
-		/*
-		 * obtain the proposed password
-		 */
-
-		/*
-		 * get the old token back.
-		 */
-
-		ret = _pam_get_item(pamh, PAM_OLDAUTHTOK, &pass_old);
-
-		if (ret != PAM_SUCCESS) {
-			_pam_log(ctx, LOG_NOTICE,
-				 "user not authenticated");
-			goto out;
-		}
-
-		lctrl = ctx->ctrl & ~WINBIND_TRY_FIRST_PASS_ARG;
-
-		if (on(WINBIND_USE_AUTHTOK_ARG, lctrl)) {
-			lctrl |= WINBIND_USE_FIRST_PASS_ARG;
-		}
-		retry = 0;
-		ret = PAM_AUTHTOK_ERR;
-		while ((ret != PAM_SUCCESS) && (retry++ < MAX_PASSWD_TRIES)) {
-			/*
-			 * use_authtok is to force the use of a previously entered
-			 * password -- needed for pluggable password strength checking
-			 */
-
-			ret = _winbind_read_password(ctx, lctrl,
-						     NULL,
-						     _("Enter new NT password: "),
-						     _("Retype new NT password: "),
-						     (const char **)&pass_new);
-
-			if (ret != PAM_SUCCESS) {
-				_pam_log_debug(ctx, LOG_ALERT,
-					       "password - "
-					       "new password not obtained");
-				pass_old = NULL;/* tidy up */
-				goto out;
-			}
-
-			/*
-			 * At this point we know who the user is and what they
-			 * propose as their new password. Verify that the new
-			 * password is acceptable.
-			 */
-
-			if (pass_new[0] == '\0') {/* "\0" password = NULL */
-				pass_new = NULL;
-			}
-		}
-
-		/*
-		 * By reaching here we have approved the passwords and must now
-		 * rebuild the password database file.
-		 */
-		_pam_get_data(pamh, PAM_WINBIND_PWD_LAST_SET,
-			      &pwdlastset_update);
-
-		/*
-		 * if cached creds were enabled, make sure to set the
-		 * WINBIND_CACHED_LOGIN bit here in order to have winbindd
-		 * update the cached creds storage - gd
-		 */
-		if (cached_login) {
-			ctx->ctrl |= WINBIND_CACHED_LOGIN;
-		}
-
-		ret = winbind_chauthtok_request(ctx, user, pass_old,
-						pass_new, pwdlastset_update);
-		if (ret) {
-			_pam_overwrite(pass_new);
-			_pam_overwrite(pass_old);
-			pass_old = pass_new = NULL;
-			goto out;
-		}
-
-		if (_pam_require_krb5_auth_after_chauthtok(ctx, user)) {
-
-			const char *member = NULL;
-			const char *cctype = NULL;
-			int warn_pwd_expire;
-			struct wbcLogonUserInfo *info = NULL;
-			struct wbcUserPasswordPolicyInfo *policy = NULL;
-
-			member = get_member_from_config(ctx);
-			cctype = get_krb5_cc_type_from_config(ctx);
-			warn_pwd_expire = get_warn_pwd_expire_from_config(ctx);
-
-			/* Keep WINBIND_CACHED_LOGIN bit for
-			 * authentication after changing the password.
-			 * This will update the cached credentials in case
-			 * that winbindd_dual_pam_chauthtok() fails
-			 * to update them.
-			 * --- BoYang
-			 * */
-
-			ret = winbind_auth_request(ctx, user, pass_new,
-						   member, cctype, 0,
-						   &error, &info, &policy,
-						   NULL, &username_ret);
-			_pam_overwrite(pass_new);
-			_pam_overwrite(pass_old);
-			pass_old = pass_new = NULL;
-
-			if (ret == PAM_SUCCESS) {
-
-				struct wbcAuthUserInfo *user_info = NULL;
-
-				if (info && info->info) {
-					user_info = info->info;
-				}
-
-				/* warn a user if the password is about to
-				 * expire soon */
-				_pam_warn_password_expiry(ctx, user_info, policy,
-							  warn_pwd_expire,
-							  NULL);
-
-				/* set some info3 info for other modules in the
-				 * stack */
-				_pam_set_data_info3(ctx, user_info);
-
-				/* put krb5ccname into env */
-				_pam_setup_krb5_env(ctx, info);
-
-				if (username_ret) {
-					pam_set_item(pamh, PAM_USER,
-						     username_ret);
-					_pam_log_debug(ctx, LOG_INFO,
-						       "Returned user was '%s'",
-						       username_ret);
-					free(username_ret);
-				}
-
-				wbcFreeMemory(info);
-				wbcFreeMemory(policy);
-			}
-
-			goto out;
-		}
-	} else {
-		ret = PAM_SERVICE_ERR;
-	}
-
-out:
-	{
-		/* Deal with offline errors. */
-		int i;
-		const char *codes[] = {
-			"NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND",
-			"NT_STATUS_NO_LOGON_SERVERS",
-			"NT_STATUS_ACCESS_DENIED"
-		};
-
-		for (i=0; i<ARRAY_SIZE(codes); i++) {
-			int _ret;
-			if (_pam_check_remark_auth_err(ctx, error, codes[i], &_ret)) {
-				break;
-			}
-		}
-	}
-
-	wbcFreeMemory(error);
-
-	_PAM_LOG_FUNCTION_LEAVE("pam_sm_chauthtok", ctx, ret);
-
-	TALLOC_FREE(ctx);
-
-	return ret;
-}
-
-#ifdef PAM_STATIC
-
-/* static module data */
-
-struct pam_module _pam_winbind_modstruct = {
-	MODULE_NAME,
-	pam_sm_authenticate,
-	pam_sm_setcred,
-	pam_sm_acct_mgmt,
-	pam_sm_open_session,
-	pam_sm_close_session,
-	pam_sm_chauthtok
-};
-
-#endif
-
-/*
- * Copyright (c) Andrew Tridgell  <tridge@samba.org>   2000
- * Copyright (c) Tim Potter       <tpot@samba.org>     2000
- * Copyright (c) Andrew Bartlettt <abartlet@samba.org> 2002
- * Copyright (c) Guenther Deschner <gd@samba.org>      2005-2008
- * Copyright (c) Jan Rêkorajski 1999.
- * Copyright (c) Andrew G. Morgan 1996-8.
- * Copyright (c) Alex O. Yuriev, 1996.
- * Copyright (c) Cristian Gafton 1996.
- * Copyright (C) Elliot Lee <sopwith@redhat.com> 1996, Red Hat Software.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, and the entire permission notice in its entirety,
- *    including the disclaimer of warranties.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. The name of the author may not be used to endorse or promote
- *    products derived from this software without specific prior
- *    written permission.
- *
- * ALTERNATIVELY, this product may be distributed under the terms of
- * the GNU Public License, in which case the provisions of the GPL are
- * required INSTEAD OF the above restrictions.  (This clause is
- * necessary due to a potential bad interaction between the GPL and
- * the restrictions contained in a BSD-style copyright.)
- *
- * THIS SOFTWARE IS PROVIDED `AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
- * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
- * OF THE POSSIBILITY OF SUCH DAMAGE.
- */