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> 2005-2007
+ 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)
+ 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"
-#define _PAM_LOG_FUNCTION_ENTER(function, pamh, ctrl, flags) \
+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_RECOVERY_ERR:
+ return "PAM_AUTHTOK_RECOVERY_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(pamh, ctrl, LOG_DEBUG, "[pamh: 0x%08x] ENTER: " function " (flags: 0x%04x)", (uint32) pamh, flags); \
- _pam_log_state(pamh, ctrl); \
+ _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, pamh, ctrl, retval) \
+#define _PAM_LOG_FUNCTION_LEAVE(function, ctx, retval) \
do { \
- _pam_log_debug(pamh, ctrl, LOG_DEBUG, "[pamh: 0x%08x] LEAVE: " function " returning %d", (uint32) pamh, retval); \
- _pam_log_state(pamh, ctrl); \
+ _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
/*
- * Work around the pam API that has functions with void ** as parameters.
+ * 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,
+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 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)
+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)
+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 = malloc(strlen(MODULE_NAME)+strlen(format)+strlen(service)+5);
+ format2 = (char *)malloc(strlen(MODULE_NAME)+strlen(format)+strlen(service)+5);
if (format2 == NULL) {
/* what else todo ? */
vsyslog(err, format, args);
}
#endif /* HAVE_PAM_VSYSLOG */
-static BOOL _pam_log_is_silent(int ctrl)
+static bool _pam_log_is_silent(int ctrl)
{
return on(ctrl, WINBIND_SILENT);
}
-static void _pam_log(const pam_handle_t *pamh, int ctrl, int err, const char *format, ...)
+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;
va_end(args);
}
-static BOOL _pam_log_is_debug_enabled(int ctrl)
+static bool _pam_log_is_debug_enabled(int ctrl)
{
if (ctrl == -1) {
- return False;
+ return false;
}
if (_pam_log_is_silent(ctrl)) {
- return False;
+ return false;
}
if (!(ctrl & WINBIND_DEBUG_ARG)) {
- return False;
+ return false;
}
- return True;
+ return true;
}
-static BOOL _pam_log_is_debug_state_enabled(int ctrl)
+static bool _pam_log_is_debug_state_enabled(int ctrl)
{
if (!(ctrl & WINBIND_DEBUG_STATE)) {
- return False;
+ return false;
}
return _pam_log_is_debug_enabled(ctrl);
}
-static void _pam_log_debug(const pam_handle_t *pamh, int ctrl, int err, const char *format, ...)
+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;
va_end(args);
}
-static void _pam_log_state_datum(const pam_handle_t *pamh, int ctrl, int item_type, const char *key, int is_string)
+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(pamh, item_type, &data);
+ pam_get_item(ctx->pamh, item_type, &data);
} else {
- pam_get_data(pamh, key, &data);
+ 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(pamh, ctrl, LOG_DEBUG, "[pamh: 0x%08x] STATE: %s(%s) = \"%s\" (0x%08x)", (uint32) pamh, type, key, (const char *) data, (uint32) data);
+ _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(pamh, ctrl, LOG_DEBUG, "[pamh: 0x%08x] STATE: %s(%s) = 0x%08x", (uint32) pamh, type, key, (uint32) data);
+ _pam_log_debug(ctx, LOG_DEBUG,
+ "[pamh: %p] STATE: %s(%s) = %p",
+ ctx->pamh, type, key, data);
}
}
}
-#define _PAM_LOG_STATE_DATA_POINTER(pamh, ctrl, module_data_name) \
- _pam_log_state_datum(pamh, ctrl, 0, module_data_name, 0)
+#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(pamh, ctrl, module_data_name) \
- _pam_log_state_datum(pamh, ctrl, 0, module_data_name, 1)
+#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(pamh, ctrl, item_type) \
- _pam_log_state_datum(pamh, ctrl, item_type, #item_type, 0)
+#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(pamh, ctrl, item_type) \
- _pam_log_state_datum(pamh, ctrl, item_type, #item_type, 1)
+#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
#define _LOG_PASSWORD_AS_STRING 0
#endif
-#define _PAM_LOG_STATE_ITEM_PASSWORD(pamh, ctrl, item_type) \
- _pam_log_state_datum(pamh, ctrl, item_type, #item_type, _LOG_PASSWORD_AS_STRING)
+#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(const pam_handle_t *pamh, int ctrl)
+static void _pam_log_state(struct pwb_context *ctx)
{
- if (!_pam_log_is_debug_state_enabled(ctrl)) {
+ if (!_pam_log_is_debug_state_enabled(ctx->ctrl)) {
return;
}
- _PAM_LOG_STATE_ITEM_STRING(pamh, ctrl, PAM_SERVICE);
- _PAM_LOG_STATE_ITEM_STRING(pamh, ctrl, PAM_USER);
- _PAM_LOG_STATE_ITEM_STRING(pamh, ctrl, PAM_TTY);
- _PAM_LOG_STATE_ITEM_STRING(pamh, ctrl, PAM_RHOST);
- _PAM_LOG_STATE_ITEM_STRING(pamh, ctrl, PAM_RUSER);
- _PAM_LOG_STATE_ITEM_PASSWORD(pamh, ctrl, PAM_OLDAUTHTOK);
- _PAM_LOG_STATE_ITEM_PASSWORD(pamh, ctrl, PAM_AUTHTOK);
- _PAM_LOG_STATE_ITEM_STRING(pamh, ctrl, PAM_USER_PROMPT);
- _PAM_LOG_STATE_ITEM_POINTER(pamh, ctrl, PAM_CONV);
+ _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(pamh, ctrl, PAM_FAIL_DELAY);
+ _PAM_LOG_STATE_ITEM_POINTER(ctx, PAM_FAIL_DELAY);
#endif
#ifdef PAM_REPOSITORY
- _PAM_LOG_STATE_ITEM_POINTER(pamh, ctrl, PAM_REPOSITORY);
+ _PAM_LOG_STATE_ITEM_POINTER(ctx, PAM_REPOSITORY);
#endif
- _PAM_LOG_STATE_DATA_STRING(pamh, ctrl, PAM_WINBIND_HOMEDIR);
- _PAM_LOG_STATE_DATA_STRING(pamh, ctrl, PAM_WINBIND_LOGONSCRIPT);
- _PAM_LOG_STATE_DATA_STRING(pamh, ctrl, PAM_WINBIND_PROFILEPATH);
- _PAM_LOG_STATE_DATA_STRING(pamh, ctrl, PAM_WINBIND_NEW_AUTHTOK_REQD); /* Use atoi to get PAM result code */
- _PAM_LOG_STATE_DATA_POINTER(pamh, ctrl, PAM_WINBIND_PWD_LAST_SET);
+ _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)
+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;
goto config_from_pam;
}
- if (iniparser_getboolean(d, "global:debug", False)) {
+ if (iniparser_getboolean(d, "global:debug", false)) {
ctrl |= WINBIND_DEBUG_ARG;
}
- if (iniparser_getboolean(d, "global:debug_state", False)) {
+ if (iniparser_getboolean(d, "global:debug_state", false)) {
ctrl |= WINBIND_DEBUG_STATE;
}
- if (iniparser_getboolean(d, "global:cached_login", False)) {
+ if (iniparser_getboolean(d, "global:cached_login", false)) {
ctrl |= WINBIND_CACHED_LOGIN;
}
- if (iniparser_getboolean(d, "global:krb5_auth", False)) {
+ if (iniparser_getboolean(d, "global:krb5_auth", false)) {
ctrl |= WINBIND_KRB5_AUTH;
}
- if (iniparser_getboolean(d, "global:silent", False)) {
+ if (iniparser_getboolean(d, "global:silent", false)) {
ctrl |= WINBIND_SILENT;
}
ctrl |= WINBIND_REQUIRED_MEMBERSHIP;
}
- if (iniparser_getboolean(d, "global:try_first_pass", False)) {
+ 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) {
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_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")))
+ 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")))
+ 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")))
+ 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);
+ __pam_log(pamh, ctrl, LOG_ERR,
+ "pam_parse: unknown option: %s", *v);
return -1;
}
return ctrl;
};
-static void _pam_winbind_cleanup_func(pam_handle_t *pamh, void *data, int error_status)
+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;
+
+ 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: 0x%08x] CLEAN: cleaning up PAM data 0x%08x (error_status = %d)", (uint32) pamh, (uint32) data, error_status);
+ __pam_log_debug(pamh, ctrl, LOG_DEBUG,
+ "[pamh: %p] CLEAN: cleaning up PAM data %p "
+ "(error_status = %d)", pamh, data,
+ error_status);
}
- SAFE_FREE(data);
+ TALLOC_FREE(data);
}
const char *ntstatus_string;
const char *error_string;
} ntstatus_errors[] = {
- {"NT_STATUS_OK", "Success"},
- {"NT_STATUS_BACKUP_CONTROLLER", "No primary Domain Controler available"},
- {"NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND", "No domain controllers found"},
- {"NT_STATUS_NO_LOGON_SERVERS", "No logon servers"},
- {"NT_STATUS_PWD_TOO_SHORT", "Password too short"},
- {"NT_STATUS_PWD_TOO_RECENT", "The password of this user is too recent to change"},
- {"NT_STATUS_PWD_HISTORY_CONFLICT", "Password is already in password history"},
- {"NT_STATUS_PASSWORD_EXPIRED", "Your password has expired"},
- {"NT_STATUS_PASSWORD_MUST_CHANGE", "You need to change your password now"},
- {"NT_STATUS_INVALID_WORKSTATION", "You are not allowed to logon from this workstation"},
- {"NT_STATUS_INVALID_LOGON_HOURS", "You are not allowed to logon at this time"},
- {"NT_STATUS_ACCOUNT_EXPIRED", "Your account has expired. Please contact your System administrator"}, /* SCNR */
- {"NT_STATUS_ACCOUNT_DISABLED", "Your account is disabled. Please contact your System administrator"}, /* SCNR */
- {"NT_STATUS_ACCOUNT_LOCKED_OUT", "Your account has been locked. Please contact your System administrator"}, /* SCNR */
- {"NT_STATUS_NOLOGON_WORKSTATION_TRUST_ACCOUNT", "Invalid Trust Account"},
- {"NT_STATUS_NOLOGON_SERVER_TRUST_ACCOUNT", "Invalid Trust Account"},
- {"NT_STATUS_NOLOGON_INTERDOMAIN_TRUST_ACCOUNT", "Invalid Trust Account"},
- {"NT_STATUS_ACCESS_DENIED", "Access is denied"},
+ {"NT_STATUS_OK",
+ "Success"},
+ {"NT_STATUS_BACKUP_CONTROLLER",
+ "No primary Domain Controler available"},
+ {"NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND",
+ "No domain controllers found"},
+ {"NT_STATUS_NO_LOGON_SERVERS",
+ "No logon servers"},
+ {"NT_STATUS_PWD_TOO_SHORT",
+ "Password too short"},
+ {"NT_STATUS_PWD_TOO_RECENT",
+ "The password of this user is too recent to change"},
+ {"NT_STATUS_PWD_HISTORY_CONFLICT",
+ "Password is already in password history"},
+ {"NT_STATUS_PASSWORD_EXPIRED",
+ "Your password has expired"},
+ {"NT_STATUS_PASSWORD_MUST_CHANGE",
+ "You need to change your password now"},
+ {"NT_STATUS_INVALID_WORKSTATION",
+ "You are not allowed to logon from this workstation"},
+ {"NT_STATUS_INVALID_LOGON_HOURS",
+ "You are not allowed to logon at this time"},
+ {"NT_STATUS_ACCOUNT_EXPIRED",
+ "Your account has expired. "
+ "Please contact your System administrator"}, /* SCNR */
+ {"NT_STATUS_ACCOUNT_DISABLED",
+ "Your account is disabled. "
+ "Please contact your System administrator"}, /* SCNR */
+ {"NT_STATUS_ACCOUNT_LOCKED_OUT",
+ "Your account has been locked. "
+ "Please contact your System administrator"}, /* SCNR */
+ {"NT_STATUS_NOLOGON_WORKSTATION_TRUST_ACCOUNT",
+ "Invalid Trust Account"},
+ {"NT_STATUS_NOLOGON_SERVER_TRUST_ACCOUNT",
+ "Invalid Trust Account"},
+ {"NT_STATUS_NOLOGON_INTERDOMAIN_TRUST_ACCOUNT",
+ "Invalid Trust Account"},
+ {"NT_STATUS_ACCESS_DENIED",
+ "Access is denied"},
{NULL, NULL}
};
-const char *_get_ntstatus_error_string(const char *nt_status_string)
+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)) {
+ if (!strcasecmp(ntstatus_errors[i].ntstatus_string,
+ nt_status_string)) {
return ntstatus_errors[i].error_string;
}
}
/* Attempt a conversation */
-static int converse(pam_handle_t *pamh, int nargs,
+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 );
+ retval = _pam_get_item(pamh, PAM_CONV, &conv);
if (retval == PAM_SUCCESS) {
- retval = conv->conv(nargs, (const struct pam_message **)message,
+ retval = conv->conv(nargs,
+ (const struct pam_message **)message,
response, conv->appdata_ptr);
}
-
+
return retval; /* propagate error status */
}
-static int _make_remark(pam_handle_t * pamh, int type, const char *text)
+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 = CONST_DISCARD(char *, text);
+ msg[0].msg = discard_const_p(char, text);
msg[0].msg_style = type;
-
+
resp = NULL;
- retval = converse(pamh, 1, pmsg, &resp);
-
+ retval = converse(ctx->pamh, 1, pmsg, &resp);
+
if (resp) {
_pam_drop_reply(resp, 1);
}
return retval;
}
-static int _make_remark_v(pam_handle_t * pamh, int type, const char *format, va_list args)
+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(pamh, 0, LOG_ERR, "memory allocation failure");
+ _pam_log(ctx, LOG_ERR, "memory allocation failure");
return ret;
}
- ret = _make_remark(pamh, type, var);
+ ret = _make_remark(ctx, type, var);
SAFE_FREE(var);
return ret;
}
-static int _make_remark_format(pam_handle_t * pamh, int type, const char *format, ...)
+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(pamh, type, format, args);
+ ret = _make_remark_v(ctx, type, format, args);
va_end(args);
return ret;
}
-static int pam_winbind_request(pam_handle_t * pamh, int ctrl,
- enum winbindd_cmd req_type,
- struct winbindd_request *request,
- struct winbindd_response *response)
-{
- /* Fill in request and send down pipe */
- init_request(request, req_type);
-
- if (write_sock(request, sizeof(*request), 0) == -1) {
- _pam_log(pamh, ctrl, LOG_ERR, "pam_winbind_request: write to socket failed!");
- close_sock();
- return PAM_SERVICE_ERR;
- }
-
- /* Wait for reply */
- if (read_reply(response) == -1) {
- _pam_log(pamh, ctrl, LOG_ERR, "pam_winbind_request: read from socket failed!");
- close_sock();
- return PAM_SERVICE_ERR;
- }
-
- /* We are done with the socket - close it and avoid mischeif */
- close_sock();
-
- /* Copy reply data from socket */
- if (response->result != WINBINDD_OK) {
- if (response->data.auth.pam_error != PAM_SUCCESS) {
- _pam_log(pamh, ctrl, LOG_ERR, "request failed: %s, PAM error was %s (%d), NT error was %s",
- response->data.auth.error_string,
- pam_strerror(pamh, response->data.auth.pam_error),
- response->data.auth.pam_error,
- response->data.auth.nt_status_string);
- return response->data.auth.pam_error;
- } else {
- _pam_log(pamh, ctrl, LOG_ERR, "request failed, but PAM error 0!");
- return PAM_SERVICE_ERR;
- }
- }
-
- return PAM_SUCCESS;
-}
-
-static int pam_winbind_request_log(pam_handle_t * pamh,
- int ctrl,
- enum winbindd_cmd req_type,
- struct winbindd_request *request,
- struct winbindd_response *response,
- const char *user)
+static int pam_winbind_request_log(struct pwb_context *ctx,
+ int retval,
+ const char *user,
+ const char *fn)
{
- int retval;
-
- retval = pam_winbind_request(pamh, ctrl, req_type, request, response);
-
switch (retval) {
case PAM_AUTH_ERR:
/* incorrect password */
- _pam_log(pamh, ctrl, LOG_WARNING, "user '%s' denied access (incorrect password or invalid membership)", user);
+ _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(pamh, ctrl, LOG_WARNING, "user '%s' account expired", user);
+ _pam_log(ctx, LOG_WARNING, "user '%s' account expired",
+ user);
return retval;
case PAM_AUTHTOK_EXPIRED:
/* password expired */
- _pam_log(pamh, ctrl, LOG_WARNING, "user '%s' password expired", user);
+ _pam_log(ctx, LOG_WARNING, "user '%s' password expired",
+ user);
return retval;
case PAM_NEW_AUTHTOK_REQD:
/* new password required */
- _pam_log(pamh, ctrl, LOG_WARNING, "user '%s' new password required", user);
+ _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(pamh, ctrl, LOG_NOTICE, "user '%s' not found", user);
- if (ctrl & WINBIND_UNKNOWN_OK_ARG) {
+ _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:
- if (req_type == WINBINDD_PAM_AUTH) {
- /* Otherwise, the authentication looked good */
- _pam_log(pamh, ctrl, LOG_NOTICE, "user '%s' granted access", user);
- } else if (req_type == WINBINDD_PAM_CHAUTHTOK) {
- /* Otherwise, the authentication looked good */
- _pam_log(pamh, ctrl, LOG_NOTICE, "user '%s' password changed", user);
- } else {
- /* Otherwise, the authentication looked good */
- _pam_log(pamh, ctrl, LOG_NOTICE, "user '%s' OK", user);
- }
-
+ /* 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(pamh, ctrl, LOG_ERR, "internal module error (retval = %d, user = '%s')",
- retval, user);
+ _pam_log(ctx, LOG_ERR,
+ "internal module error (retval = %s(%d), user = '%s')",
+ _pam_error_code_str(retval), retval, user);
return retval;
}
}
-static BOOL _pam_send_password_expiry_message(pam_handle_t *pamh, time_t next_change, time_t now)
+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) ||
- (next_change > now + DAYS_TO_WARN_BEFORE_PWD_EXPIRES * SECONDS_PER_DAY)) {
- return False;
+ (next_change > now + warn_pwd_expire * SECONDS_PER_DAY)) {
+ return false;
}
- if ((localtime_r(&now, &tm_now) == NULL) ||
+ if ((localtime_r(&now, &tm_now) == NULL) ||
(localtime_r(&next_change, &tm_next_change) == NULL)) {
- return False;
+ return false;
}
- days = (tm_next_change.tm_yday+tm_next_change.tm_year*365) - (tm_now.tm_yday+tm_now.tm_year*365);
+ 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(pamh, PAM_TEXT_INFO, "Your password expires today");
- return True;
- }
-
- if (days > 0 && days < DAYS_TO_WARN_BEFORE_PWD_EXPIRES) {
- _make_remark_format(pamh, PAM_TEXT_INFO, "Your password will expire in %d %s",
- days, (days > 1) ? "days":"day");
- return True;
+ _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;
+ return false;
}
-static void _pam_warn_password_expires_in_future(pam_handle_t *pamh, struct winbindd_response *response)
+/**
+ * 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;
- /* accounts with ACB_PWNOEXP set never receive a warning */
- if (response->data.auth.info3.acct_flags & ACB_PWNOEXP) {
+ 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(response->data.auth.info3.user_flgs)) {
+ if (PAM_WB_GRACE_LOGON(info->user_flags)) {
return;
}
/* check if the info3 must change timestamp has been set */
- next_change = response->data.auth.info3.pass_must_change_time;
+ next_change = info->pass_must_change_time;
- if (_pam_send_password_expiry_message(pamh, next_change, now)) {
+ if (_pam_send_password_expiry_message(ctx, next_change, now,
+ warn_pwd_expire,
+ already_expired)) {
return;
}
/* now check for the global password policy */
- if (response->data.auth.policy.expire <= 0) {
+ /* good catch from Ralf Haferkamp: an expiry of "never" is translated
+ * to -1 */
+ if (policy->expire <= 0) {
return;
}
- next_change = response->data.auth.info3.pass_last_set_time +
- response->data.auth.policy.expire;
+ next_change = info->pass_last_set_time + policy->expire;
- if (_pam_send_password_expiry_message(pamh, next_change, now)) {
+ if (_pam_send_password_expiry_message(ctx, next_change, now,
+ warn_pwd_expire,
+ already_expired)) {
return;
}
#define IS_SID_STRING(name) (strncmp("S-", name, 2) == 0)
-int safe_append_string(char *dest,
- const char *src,
- int dest_buffer_size)
/**
- * Append a string, making sure not to overflow and to always return a NULL-terminated
- * string.
+ * 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 0 if dest buffer is not big enough (no bytes copied), non-zero on success.
+ * @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 0;
+ if (dest_length + src_length + 1 > dest_buffer_size) {
+ return false;
}
memcpy(dest + dest_length, src, src_length + 1);
- return 1;
+ return true;
}
-static int winbind_name_to_sid_string(pam_handle_t *pamh,
- int ctrl,
- const char *user,
- const char *name,
- char *sid_list_buffer,
- int sid_list_buffer_size)
/**
* Convert a names into a SID string, appending it to a buffer.
*
- * @param pamh PAM handle
- * @param ctrl PAM winbind options.
+ * @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 0 on failure, non-zero on success.
+ * @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;
- struct winbindd_response sid_response;
- /* lookup name? */
+ /* lookup name? */
if (IS_SID_STRING(name)) {
sid_string = name;
} else {
- struct winbindd_request sid_request;
-
- ZERO_STRUCT(sid_request);
- ZERO_STRUCT(sid_response);
-
- _pam_log_debug(pamh, ctrl, LOG_DEBUG, "no sid given, looking up: %s\n", name);
-
- /* fortunatly winbindd can handle non-separated names */
- strncpy(sid_request.data.name.name, name,
- sizeof(sid_request.data.name.name) - 1);
+ 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;
+ }
- if (pam_winbind_request_log(pamh, ctrl, WINBINDD_LOOKUPNAME, &sid_request, &sid_response, user)) {
- _pam_log(pamh, ctrl, LOG_INFO, "could not lookup name: %s\n", name);
- return 0;
+ wbc_status = wbcSidToString(&sid, &sid_str);
+ if (!WBC_ERROR_IS_OK(wbc_status)) {
+ return false;
}
- sid_string = sid_response.data.sid.sid;
+ wbcFreeMemory(sid_str);
+ sid_string = sid_str;
}
- if (!safe_append_string(sid_list_buffer, sid_string, sid_list_buffer_size)) {
- return 0;
+ if (!safe_append_string(sid_list_buffer, sid_string,
+ sid_list_buffer_size)) {
+ return false;
}
- return 1;
+ return true;
}
-static int winbind_name_list_to_sid_string_list(pam_handle_t *pamh,
- int ctrl,
- const char *user,
- const char *name_list,
- char *sid_list_buffer,
- int sid_list_buffer_size)
/**
* Convert a list of names into a list of sids.
*
- * @param pamh PAM handle
- * @param ctrl PAM winbind options.
+ * @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 0 on failure, non-zero on success.
+ * @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)
{
- int result = 0;
+ bool result = false;
char *current_name = NULL;
const char *search_location;
const char *comma;
- if ( sid_list_buffer_size > 0 ) {
+ 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);
+ 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(pamh, ctrl, user, current_name, sid_list_buffer, sid_list_buffer_size)) {
+ 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)) {
+ if (!safe_append_string(sid_list_buffer, ",",
+ sid_list_buffer_size)) {
goto out;
}
search_location = comma + 1;
}
- if (!winbind_name_to_sid_string(pamh, ctrl, user, search_location, sid_list_buffer, sid_list_buffer_size)) {
+ if (!winbind_name_to_sid_string(ctx, user, search_location,
+ sid_list_buffer,
+ sid_list_buffer_size)) {
goto out;
}
- result = 1;
+ result = true;
out:
SAFE_FREE(current_name);
return result;
}
-/* talk to winbindd */
-static int winbind_auth_request(pam_handle_t * pamh,
- int ctrl,
- const char *user,
- const char *pass,
- const char *member,
- const char *cctype,
- struct winbindd_response *p_response,
- time_t *pwd_last_set,
- char **user_ret)
+/**
+ * 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)
{
- struct winbindd_request request;
- struct winbindd_response response;
+ char var[PATH_MAX];
int ret;
+ uint32_t i;
+ const char *krb5ccname = NULL;
+
+ if (off(ctx->ctrl, WINBIND_KRB5_AUTH)) {
+ return;
+ }
- ZERO_STRUCT(request);
- ZERO_STRUCT(response);
+ if (!info) {
+ return;
+ }
- if (pwd_last_set) {
- *pwd_last_set = 0;
+ 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;
+ }
}
- strncpy(request.data.auth.user, user,
- sizeof(request.data.auth.user)-1);
+ if (!krb5ccname || (strlen(krb5ccname) == 0)) {
+ return;
+ }
- strncpy(request.data.auth.pass, pass,
- sizeof(request.data.auth.pass)-1);
+ _pam_log_debug(ctx, LOG_DEBUG,
+ "request returned KRB5CCNAME: %s", krb5ccname);
- request.data.auth.krb5_cc_type[0] = '\0';
- request.data.auth.uid = -1;
-
- request.flags = WBFLAG_PAM_INFO3_TEXT | WBFLAG_PAM_CONTACT_TRUSTDOM;
+ if (snprintf(var, sizeof(var), "KRB5CCNAME=%s", krb5ccname) == -1) {
+ return;
+ }
- if (ctrl & WINBIND_KRB5_AUTH) {
+ 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));
+ }
+}
- struct passwd *pwd = NULL;
+/**
+ * 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.
+ */
- _pam_log_debug(pamh, ctrl, LOG_DEBUG, "enabling krb5 login flag\n");
+static void _pam_setup_unix_username(struct pwb_context *ctx,
+ char **user_ret,
+ struct wbcLogonUserInfo *info)
+{
+ const char *unix_username = NULL;
+ uint32_t i;
- request.flags |= WBFLAG_PAM_KRB5 | WBFLAG_PAM_FALLBACK_AFTER_KRB5;
+ if (!user_ret || !info) {
+ return;
+ }
- pwd = getpwnam(user);
- if (pwd == NULL) {
- return PAM_USER_UNKNOWN;
+ 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;
}
- request.data.auth.uid = pwd->pw_uid;
}
- if (ctrl & WINBIND_CACHED_LOGIN) {
- _pam_log_debug(pamh, ctrl, LOG_DEBUG, "enabling cached login flag\n");
- request.flags |= WBFLAG_PAM_CACHED_LOGIN;
+ if (!unix_username || !unix_username[0]) {
+ return;
}
- if (user_ret) {
- *user_ret = NULL;
- request.flags |= WBFLAG_PAM_UNIX_NAME;
+ *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;
}
- if (cctype != NULL) {
- strncpy(request.data.auth.krb5_cc_type, cctype,
- sizeof(request.data.auth.krb5_cc_type) - 1);
- _pam_log_debug(pamh, ctrl, LOG_DEBUG, "enabling request for a %s krb5 ccache\n", cctype);
+ 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));
}
+}
- request.data.auth.require_membership_of_sid[0] = '\0';
+/**
+ * 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.
+ */
- if (member != NULL) {
+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);
+}
- if (!winbind_name_list_to_sid_string_list(pamh, ctrl, user, member,
- request.data.auth.require_membership_of_sid,
- sizeof(request.data.auth.require_membership_of_sid))) {
+/**
+ * Free info3 strings in the PAM stack.
+ *
+ * @param pamh PAM handle
+ *
+ * @return void.
+ */
- _pam_log_debug(pamh, ctrl, LOG_ERR, "failed to serialize membership of sid \"%s\"\n", member);
- return PAM_AUTH_ERR;
- }
- }
+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);
+}
- ret = pam_winbind_request_log(pamh, ctrl, WINBINDD_PAM_AUTH, &request, &response, user);
+/**
+ * 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.
+ */
- if (pwd_last_set) {
- *pwd_last_set = response.data.auth.info3.pass_last_set_time;
+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);
}
+}
- if ((ctrl & WINBIND_KRB5_AUTH) &&
- response.data.auth.krb5ccname[0] != '\0') {
-
- char var[PATH_MAX];
+/**
+ * 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.
+ */
- _pam_log_debug(pamh, ctrl, LOG_DEBUG, "request returned KRB5CCNAME: %s",
- response.data.auth.krb5ccname);
-
- snprintf(var, sizeof(var), "KRB5CCNAME=%s", response.data.auth.krb5ccname);
-
- ret = pam_putenv(pamh, var);
- if (ret != PAM_SUCCESS) {
- _pam_log(pamh, ctrl, LOG_ERR, "failed to set KRB5CCNAME to %s", var);
- return ret;
- }
+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);
}
+}
- if (p_response) {
- /* We want to process the response in the caller. */
- *p_response = response;
- return ret;
+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;
}
- if (ret) {
- PAM_WB_REMARK_CHECK_RESPONSE_RET(pamh, response, "NT_STATUS_PASSWORD_EXPIRED");
- PAM_WB_REMARK_CHECK_RESPONSE_RET(pamh, response, "NT_STATUS_PASSWORD_MUST_CHANGE");
- PAM_WB_REMARK_CHECK_RESPONSE_RET(pamh, response, "NT_STATUS_INVALID_WORKSTATION");
- PAM_WB_REMARK_CHECK_RESPONSE_RET(pamh, response, "NT_STATUS_INVALID_LOGON_HOURS");
- PAM_WB_REMARK_CHECK_RESPONSE_RET(pamh, response, "NT_STATUS_ACCOUNT_EXPIRED");
- PAM_WB_REMARK_CHECK_RESPONSE_RET(pamh, response, "NT_STATUS_ACCOUNT_DISABLED");
- PAM_WB_REMARK_CHECK_RESPONSE_RET(pamh, response, "NT_STATUS_ACCOUNT_LOCKED_OUT");
- PAM_WB_REMARK_CHECK_RESPONSE_RET(pamh, response, "NT_STATUS_NOLOGON_WORKSTATION_TRUST_ACCOUNT");
- PAM_WB_REMARK_CHECK_RESPONSE_RET(pamh, response, "NT_STATUS_NOLOGON_SERVER_TRUST_ACCOUNT");
- PAM_WB_REMARK_CHECK_RESPONSE_RET(pamh, response, "NT_STATUS_NOLOGON_INTERDOMAIN_TRUST_ACCOUNT");
- PAM_WB_REMARK_CHECK_RESPONSE_RET(pamh, response, "NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND");
- PAM_WB_REMARK_CHECK_RESPONSE_RET(pamh, response, "NT_STATUS_NO_LOGON_SERVERS");
+ ntstatus = e->nt_string;
+ if (!ntstatus) {
+ return false;
}
- /* handle the case where the auth was ok, but the password must expire right now */
- /* good catch from Ralf Haferkamp: an expiry of "never" is translated to -1 */
- if ( ! (response.data.auth.info3.acct_flags & ACB_PWNOEXP) &&
- ! (PAM_WB_GRACE_LOGON(response.data.auth.info3.user_flgs)) &&
- (response.data.auth.policy.expire > 0) &&
- (response.data.auth.info3.pass_last_set_time + response.data.auth.policy.expire < time(NULL))) {
+ if (strcasecmp(ntstatus, nt_status_string) == 0) {
- ret = PAM_AUTHTOK_EXPIRED;
+ 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;
+ }
- _pam_log_debug(pamh, ctrl, LOG_DEBUG,"Password has expired (Password was last set: %d, "
- "the policy says it should expire here %d (now it's: %d)\n",
- response.data.auth.info3.pass_last_set_time,
- response.data.auth.info3.pass_last_set_time + response.data.auth.policy.expire,
- time(NULL));
+ if (e->display_string) {
+ _make_remark(ctx, PAM_ERROR_MSG, e->display_string);
+ *pam_error = e->pam_error;
+ return true;
+ }
- PAM_WB_REMARK_DIRECT_RET(pamh, "NT_STATUS_PASSWORD_EXPIRED");
+ _make_remark(ctx, PAM_ERROR_MSG, nt_status_string);
+ *pam_error = e->pam_error;
+ return true;
}
- /* warn a user if the password is about to expire soon */
- _pam_warn_password_expires_in_future(pamh, &response);
-
- /* inform about logon type */
- if (PAM_WB_GRACE_LOGON(response.data.auth.info3.user_flgs)) {
+ return false;
+};
- _make_remark(pamh, PAM_ERROR_MSG,
- "Grace login. Please change your password as soon you're online again");
- _pam_log_debug(pamh, ctrl, LOG_DEBUG,
- "User %s logged on using grace logon\n", user);
+/**
+ * Compose Password Restriction String for a PAM_ERROR_MSG conversation.
+ *
+ * @param i The wbcUserPasswordPolicyInfo struct.
+ *
+ * @return string (caller needs to talloc_free).
+ */
- } else if (PAM_WB_CACHED_LOGON(response.data.auth.info3.user_flgs)) {
+static char *_pam_compose_pwd_restriction_string(struct pwb_context *ctx,
+ struct wbcUserPasswordPolicyInfo *i)
+{
+ char *str = NULL;
- _make_remark(pamh, PAM_ERROR_MSG,
- "Logging on using cached account. Network resources can be unavailable");
- _pam_log_debug(pamh, ctrl, LOG_DEBUG,
- "User %s logged on using cached account\n", user);
+ if (!i) {
+ goto failed;
}
- /* save the CIFS homedir for pam_cifs / pam_mount */
- if (response.data.auth.info3.home_dir[0] != '\0') {
+ str = talloc_asprintf(ctx, "Your password ");
+ if (!str) {
+ goto failed;
+ }
- int ret2 = pam_set_data(pamh, PAM_WINBIND_HOMEDIR,
- (void *) strdup(response.data.auth.info3.home_dir),
- _pam_winbind_cleanup_func);
- if (ret2) {
- _pam_log_debug(pamh, ctrl, LOG_DEBUG, "Could not set data: %s",
- pam_strerror(pamh, ret2));
+ 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;
}
-
}
- /* save the logon script path for other PAM modules */
- if (response.data.auth.info3.logon_script[0] != '\0') {
-
- int ret2 = pam_set_data(pamh, PAM_WINBIND_LOGONSCRIPT,
- (void *) strdup(response.data.auth.info3.logon_script),
- _pam_winbind_cleanup_func);
- if (ret2) {
- _pam_log_debug(pamh, ctrl, LOG_DEBUG, "Could not set data: %s",
- pam_strerror(pamh, ret2));
+ 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;
}
}
- /* save the profile path for other PAM modules */
- if (response.data.auth.info3.profile_path[0] != '\0') {
-
- int ret2 = pam_set_data(pamh, PAM_WINBIND_PROFILEPATH,
- (void *) strdup(response.data.auth.info3.profile_path),
- _pam_winbind_cleanup_func);
- if (ret2) {
- _pam_log_debug(pamh, ctrl, LOG_DEBUG, "Could not set data: %s",
- pam_strerror(pamh, ret2));
+ 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;
}
}
- /* If winbindd returned a username, return the pointer to it here. */
- if (user_ret && response.extra_data.data) {
- /* We have to trust it's a null terminated string. */
- *user_ret = (char *)response.extra_data.data;
+ 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 ret;
+ return str;
+
+ failed:
+ TALLOC_FREE(str);
+ return NULL;
}
-/* talk to winbindd */
-static int winbind_chauthtok_request(pam_handle_t * pamh,
- int ctrl,
- const char *user,
- const char *oldpass,
- const char *newpass,
- time_t pwd_last_set)
+static int _pam_create_homedir(struct pwb_context *ctx,
+ const char *dirname,
+ mode_t mode)
{
- struct winbindd_request request;
- struct winbindd_response response;
- int ret;
+ struct stat sbuf;
- ZERO_STRUCT(request);
- ZERO_STRUCT(response);
+ if (stat(dirname, &sbuf) == 0) {
+ return PAM_SUCCESS;
+ }
- if (request.data.chauthtok.user == NULL) return -2;
+ if (mkdir(dirname, mode) != 0) {
- strncpy(request.data.chauthtok.user, user,
- sizeof(request.data.chauthtok.user) - 1);
+ _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;
+ }
- if (oldpass != NULL) {
- strncpy(request.data.chauthtok.oldpass, oldpass,
- sizeof(request.data.chauthtok.oldpass) - 1);
- } else {
- request.data.chauthtok.oldpass[0] = '\0';
+ 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;
}
-
- if (newpass != NULL) {
- strncpy(request.data.chauthtok.newpass, newpass,
- sizeof(request.data.chauthtok.newpass) - 1);
- } else {
- request.data.chauthtok.newpass[0] = '\0';
+
+ 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;
}
- if (ctrl & WINBIND_KRB5_AUTH) {
- request.flags = WBFLAG_PAM_KRB5 | WBFLAG_PAM_CONTACT_TRUSTDOM;
+ 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_winbind_request_log(pamh, ctrl, WINBINDD_PAM_CHAUTHTOK, &request, &response, user);
+ 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;
}
- PAM_WB_REMARK_CHECK_RESPONSE_RET(pamh, response, "NT_STATUS_BACKUP_CONTROLLER");
- PAM_WB_REMARK_CHECK_RESPONSE_RET(pamh, response, "NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND");
- PAM_WB_REMARK_CHECK_RESPONSE_RET(pamh, response, "NT_STATUS_NO_LOGON_SERVERS");
- PAM_WB_REMARK_CHECK_RESPONSE_RET(pamh, response, "NT_STATUS_ACCESS_DENIED");
+ /* 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;
+
+ 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;
+ }
+
+ 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) {
- /* TODO: tell the min pwd length ? */
- PAM_WB_REMARK_CHECK_RESPONSE_RET(pamh, response, "NT_STATUS_PWD_TOO_SHORT");
+ 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;
+ }
- /* TODO: tell the minage ? */
- PAM_WB_REMARK_CHECK_RESPONSE_RET(pamh, response, "NT_STATUS_PWD_TOO_RECENT");
+ /* inform about logon type */
+ _pam_warn_logon_type(ctx, user, user_info->user_flags);
- /* TODO: tell the history length ? */
- PAM_WB_REMARK_CHECK_RESPONSE_RET(pamh, response, "NT_STATUS_PWD_HISTORY_CONFLICT");
+ /* inform about krb5 failures */
+ _pam_warn_krb5_failure(ctx, user, user_info->user_flags);
- if (!strcasecmp(response.data.auth.nt_status_string, "NT_STATUS_PASSWORD_RESTRICTION")) {
+ /* 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(¶ms, &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 (response.data.auth.reject_reason) {
+ switch (reject_reason) {
case -1:
break;
- case REJECT_REASON_OTHER:
- if ((response.data.auth.policy.min_passwordage > 0) &&
- (pwd_last_set + response.data.auth.policy.min_passwordage > time(NULL))) {
- PAM_WB_REMARK_DIRECT(pamh, "NT_STATUS_PWD_TOO_RECENT");
+ 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 REJECT_REASON_TOO_SHORT:
- PAM_WB_REMARK_DIRECT(pamh, "NT_STATUS_PWD_TOO_SHORT");
+ case WBC_PWD_CHANGE_REJECT_TOO_SHORT:
+ PAM_WB_REMARK_DIRECT(ctx,
+ "NT_STATUS_PWD_TOO_SHORT");
break;
- case REJECT_REASON_IN_HISTORY:
- PAM_WB_REMARK_DIRECT(pamh, "NT_STATUS_PWD_HISTORY_CONFLICT");
+ case WBC_PWD_CHANGE_REJECT_IN_HISTORY:
+ PAM_WB_REMARK_DIRECT(ctx,
+ "NT_STATUS_PWD_HISTORY_CONFLICT");
break;
- case REJECT_REASON_NOT_COMPLEX:
- _make_remark(pamh, PAM_ERROR_MSG, "Password does not meet complexity requirements");
+ case WBC_PWD_CHANGE_REJECT_COMPLEXITY:
+ _make_remark(ctx, PAM_ERROR_MSG,
+ "Password does not meet "
+ "complexity requirements");
break;
default:
- _pam_log_debug(pamh, ctrl, LOG_DEBUG,
- "unknown password change reject reason: %d",
- response.data.auth.reject_reason);
+ _pam_log_debug(ctx, LOG_DEBUG,
+ "unknown password change "
+ "reject reason: %d",
+ reject_reason);
break;
}
- _make_remark_format(pamh, PAM_ERROR_MSG,
- "Your password must be at least %d characters; "
- "cannot repeat any of the your previous %d passwords"
- "%s. "
- "Please type a different password. "
- "Type a password which meets these requirements in both text boxes.",
- response.data.auth.policy.min_length_password,
- response.data.auth.policy.password_history,
- (response.data.auth.policy.password_properties & DOMAIN_PASSWORD_COMPLEX) ?
- "; must contain capitals, numerals or punctuation; and cannot contain your account or full name" :
- "");
-
+ 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;
}
* 0 = OK
* -1 = System error
*/
-static int valid_user(pam_handle_t *pamh, int ctrl, const char *user)
+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 winbindd_request request;
- struct winbindd_response response;
- int ret;
-
- ZERO_STRUCT(request);
- ZERO_STRUCT(response);
+ struct passwd *wb_pwd = NULL;
pwd = getpwnam(user);
if (pwd == NULL) {
return 1;
}
- strncpy(request.data.username, user,
- sizeof(request.data.username) - 1);
-
- ret = pam_winbind_request_log(pamh, ctrl, WINBINDD_GETPWNAM, &request, &response, user);
+ 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 (ret) {
- case PAM_USER_UNKNOWN:
+ switch (wbc_status) {
+ case WBC_ERR_UNKNOWN_USER:
return 1;
- case PAM_SUCCESS:
+ case WBC_ERR_SUCCESS:
return 0;
default:
break;
* obtain a password from the user
*/
-static int _winbind_read_password(pam_handle_t * pamh,
+static int _winbind_read_password(struct pwb_context *ctx,
unsigned int ctrl,
const char *comment,
const char *prompt1,
const char *item;
char *token;
- _pam_log(pamh, ctrl, LOG_DEBUG, "getting password (0x%08x)", ctrl);
+ _pam_log(ctx, LOG_DEBUG, "getting password (0x%08x)", ctrl);
/*
* make sure nothing inappropriate gets returned
* which authentication token are we getting?
*/
- authtok_flag = on(WINBIND__OLD_PASSWORD, ctrl) ? PAM_OLDAUTHTOK : PAM_AUTHTOK;
+ 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(pamh, authtok_flag, &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(pamh, ctrl, LOG_ALERT,
- "pam_get_item returned error to unix-read-password"
- );
+ _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(pamh, ctrl, LOG_DEBUG,
+ _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 */
+ 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;
/* prepare to converse */
- if (comment != NULL) {
+ if (comment != NULL && off(ctrl, WINBIND_SILENT)) {
pmsg[0] = &msg[0];
msg[0].msg_style = PAM_TEXT_INFO;
- msg[0].msg = CONST_DISCARD(char *, comment);
+ 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 = CONST_DISCARD(char *, prompt1);
+ 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 = CONST_DISCARD(char *, prompt2);
+ msg[i++].msg = discard_const_p(char, prompt2);
++replies;
}
/* so call the conversation expecting i responses */
resp = NULL;
- retval = converse(pamh, i, pmsg, &resp);
-
- if (resp != NULL) {
-
- /* interpret the response */
-
- if (retval == PAM_SUCCESS) { /* a good conversation */
-
- token = x_strdup(resp[i - replies].resp);
- if (token != NULL) {
- 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(pamh, PAM_ERROR_MSG, MISTYPED_PASS);
- }
- }
- } else {
- _pam_log(pamh, ctrl, LOG_NOTICE, "could not recover authentication token");
- retval = PAM_AUTHTOK_RECOVER_ERR;
- }
-
+ retval = converse(ctx->pamh, i, pmsg, &resp);
+ if (resp == NULL) {
+ if (retval == PAM_SUCCESS) {
+ retval = PAM_AUTHTOK_RECOVER_ERR;
}
- /*
- * tidy up the conversation (resp_retcode) is ignored
- * -- what is it for anyway? AGM
- */
-
+ goto done;
+ }
+ if (retval != PAM_SUCCESS) {
_pam_drop_reply(resp, i);
+ goto done;
+ }
- } else {
- retval = (retval == PAM_SUCCESS)
- ? PAM_AUTHTOK_RECOVER_ERR : retval;
+ /* 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(pamh, ctrl, LOG_DEBUG,
- "unable to obtain a password");
+ _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(pamh, authtok_flag, token);
+
+ retval = pam_set_item(ctx->pamh, authtok_flag, token);
_pam_delete(token); /* clean it up */
- if (retval != PAM_SUCCESS ||
- (retval = _pam_get_item(pamh, authtok_flag, &item)) != PAM_SUCCESS) {
-
- _pam_log(pamh, ctrl, LOG_CRIT, "error manipulating password");
+ 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;
return PAM_SUCCESS;
}
-const char *get_conf_item_string(const pam_handle_t *pamh,
- int argc,
- const char **argv,
- int ctrl,
- dictionary *d,
- const char *item,
- int config_flag)
+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;
- char *key = NULL;
- if (!(ctrl & config_flag)) {
+ 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 (d != NULL) {
+ if ((strncmp(ctx->argv[i], item, strlen(item)) == 0)) {
+ char *p;
- if (!asprintf(&key, "global:%s", item)) {
+ 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(d, key);
- SAFE_FREE(key);
+ 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;
}
- for ( i=0; i<argc; i++ ) {
+ /* let the pam opt take precedence over the pam_winbind.conf option */
+ for (i = 0; i < ctx->argc; i++) {
- if ((strncmp(argv[i], item, strlen(item)) == 0)) {
+ if ((strncmp(ctx->argv[i], item, strlen(item)) == 0)) {
char *p;
- if ( (p = strchr( argv[i], '=' )) == NULL) {
- _pam_log(pamh, ctrl, LOG_INFO, "no \"=\" delimiter for \"%s\" found\n", item);
+ if ((p = strchr(ctx->argv[i], '=')) == NULL) {
+ _pam_log(ctx, LOG_INFO,
+ "no \"=\" delimiter for \"%s\" found\n",
+ item);
goto out;
}
- _pam_log_debug(pamh, ctrl, LOG_INFO, "PAM config: %s '%s'\n", item, p+1);
- return p + 1;
+ parm_opt = atoi(p + 1);
+ _pam_log_debug(ctx, LOG_INFO,
+ "PAM config: %s '%d'\n",
+ item, parm_opt);
+ return parm_opt;
}
}
- if (d != NULL) {
- _pam_log_debug(pamh, ctrl, LOG_INFO, "CONFIG file: %s '%s'\n", item, 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;
}
-const char *get_krb5_cc_type_from_config(const pam_handle_t *pamh, int argc, const char **argv, int ctrl, dictionary *d)
+static const char *get_krb5_cc_type_from_config(struct pwb_context *ctx)
{
- return get_conf_item_string(pamh, argc, argv, ctrl, d, "krb5_ccache_type", WINBIND_KRB5_CCACHE_TYPE);
+ return get_conf_item_string(ctx, "krb5_ccache_type",
+ WINBIND_KRB5_CCACHE_TYPE);
}
-const char *get_member_from_config(const pam_handle_t *pamh, int argc, const char **argv, int ctrl, dictionary *d)
+static const char *get_member_from_config(struct pwb_context *ctx)
{
const char *ret = NULL;
- ret = get_conf_item_string(pamh, argc, argv, ctrl, d, "require_membership_of", WINBIND_REQUIRED_MEMBERSHIP);
+ ret = get_conf_item_string(ctx, "require_membership_of",
+ WINBIND_REQUIRED_MEMBERSHIP);
if (ret) {
return ret;
}
- return get_conf_item_string(pamh, argc, argv, ctrl, d, "require-membership-of", WINBIND_REQUIRED_MEMBERSHIP);
+ 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);
}
PAM_EXTERN
const char *password;
const char *member = NULL;
const char *cctype = NULL;
+ int warn_pwd_expire;
int retval = PAM_AUTH_ERR;
- dictionary *d = NULL;
char *username_ret = NULL;
char *new_authtok_required = NULL;
+ char *real_username = NULL;
+ struct pwb_context *ctx = NULL;
- /* parse arguments */
- int ctrl = _pam_parse(pamh, flags, argc, argv, &d);
- if (ctrl == -1) {
- retval = PAM_SYSTEM_ERR;
+ retval = _pam_winbind_init_context(pamh, flags, argc, argv, &ctx);
+ if (retval) {
goto out;
}
- _PAM_LOG_FUNCTION_ENTER("pam_sm_authenticate", pamh, ctrl, flags);
+ _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(pamh, ctrl, LOG_DEBUG, "can not get the username");
+ _pam_log_debug(ctx, LOG_DEBUG,
+ "can not get the username");
retval = PAM_SERVICE_ERR;
goto out;
}
- retval = _winbind_read_password(pamh, ctrl, NULL,
+
+#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(pamh, ctrl, LOG_ERR, "Could not retrieve user's password");
+ _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(pamh, ctrl, LOG_INFO, "Verify user '%s' with password '%s'",
- username, password);
+ _pam_log_debug(ctx, LOG_INFO,
+ "Verify user '%s' with password '%s'",
+ real_username, password);
#else
- _pam_log_debug(pamh, ctrl, LOG_INFO, "Verify user '%s'", username);
+ _pam_log_debug(ctx, LOG_INFO,
+ "Verify user '%s'", real_username);
#endif
- member = get_member_from_config(pamh, argc, argv, ctrl, d);
-
- cctype = get_krb5_cc_type_from_config(pamh, argc, argv, ctrl, d);
+ 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(pamh, ctrl, username, password, member,
- cctype, NULL, NULL, &username_ret);
+ 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) {
- if (!asprintf(&new_authtok_required, "%d", retval)) {
+ 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);
+ 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(pamh, ctrl, LOG_INFO, "Returned user was '%s'", username_ret);
+ _pam_log_debug(ctx, LOG_INFO,
+ "Returned user was '%s'", username_ret);
free(username_ret);
}
- if (d) {
- iniparser_freedict(d);
+ if (real_username) {
+ free(real_username);
}
if (!new_authtok_required) {
pam_set_data(pamh, PAM_WINBIND_NEW_AUTHTOK_REQD, NULL, NULL);
}
- _PAM_LOG_FUNCTION_LEAVE("pam_sm_authenticate", pamh, ctrl, retval);
+ if (retval != PAM_SUCCESS) {
+ _pam_free_data_info3(pamh);
+ }
+
+ _PAM_LOG_FUNCTION_LEAVE("pam_sm_authenticate", ctx, retval);
+
+ TALLOC_FREE(ctx);
return retval;
}
int argc, const char **argv)
{
int ret = PAM_SYSTEM_ERR;
- dictionary *d = NULL;
+ struct pwb_context *ctx = NULL;
- /* parse arguments */
- int ctrl = _pam_parse(pamh, flags, argc, argv, &d);
- if (ctrl == -1) {
- ret = PAM_SYSTEM_ERR;
+ ret = _pam_winbind_init_context(pamh, flags, argc, argv, &ctx);
+ if (ret) {
goto out;
}
- _PAM_LOG_FUNCTION_ENTER("pam_sm_setcred", pamh, ctrl, flags);
+ _PAM_LOG_FUNCTION_ENTER("pam_sm_setcred", ctx);
switch (flags & ~PAM_SILENT) {
ret = pam_sm_close_session(pamh, flags, argc, argv);
break;
case PAM_REFRESH_CRED:
- _pam_log_debug(pamh, ctrl, LOG_WARNING, "PAM_REFRESH_CRED not implemented");
+ _pam_log_debug(ctx, LOG_WARNING,
+ "PAM_REFRESH_CRED not implemented");
ret = PAM_SUCCESS;
break;
case PAM_REINITIALIZE_CRED:
- _pam_log_debug(pamh, ctrl, LOG_WARNING, "PAM_REINITIALIZE_CRED not implemented");
+ _pam_log_debug(ctx, LOG_WARNING,
+ "PAM_REINITIALIZE_CRED not implemented");
ret = PAM_SUCCESS;
break;
case PAM_ESTABLISH_CRED:
- _pam_log_debug(pamh, ctrl, LOG_WARNING, "PAM_ESTABLISH_CRED not implemented");
+ _pam_log_debug(ctx, LOG_WARNING,
+ "PAM_ESTABLISH_CRED not implemented");
ret = PAM_SUCCESS;
break;
default:
}
out:
- if (d) {
- iniparser_freedict(d);
- }
- _PAM_LOG_FUNCTION_LEAVE("pam_sm_setcred", pamh, ctrl, ret);
-
+ _PAM_LOG_FUNCTION_LEAVE("pam_sm_setcred", ctx, ret);
+
+ TALLOC_FREE(ctx);
+
return ret;
}
/*
- * Account management. We want to verify that the account exists
+ * Account management. We want to verify that the account exists
* before returning PAM_SUCCESS
*/
PAM_EXTERN
const char *username;
int ret = PAM_USER_UNKNOWN;
void *tmp = NULL;
- dictionary *d = NULL;
+ struct pwb_context *ctx = NULL;
- /* parse arguments */
- int ctrl = _pam_parse(pamh, flags, argc, argv, &d);
- if (ctrl == -1) {
- return PAM_SYSTEM_ERR;
+ ret = _pam_winbind_init_context(pamh, flags, argc, argv, &ctx);
+ if (ret) {
+ goto out;
}
- _PAM_LOG_FUNCTION_ENTER("pam_sm_acct_mgmt", pamh, ctrl, flags);
+ _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(pamh, ctrl, LOG_DEBUG,"can not get the username");
+ _pam_log_debug(ctx, LOG_DEBUG,
+ "can not get the username");
ret = PAM_SERVICE_ERR;
goto out;
}
/* Verify the username */
- ret = valid_user(pamh, ctrl, username);
+ ret = valid_user(ctx, username);
switch (ret) {
case -1:
/* some sort of system error. The log was already printed */
goto out;
case 1:
/* the user does not exist */
- _pam_log_debug(pamh, ctrl, LOG_NOTICE, "user '%s' not found", username);
- if (ctrl & WINBIND_UNKNOWN_OK_ARG) {
+ _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);
+ 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(pamh, ctrl, LOG_WARNING, "pam_sm_acct_mgmt success but %s is set",
+ _pam_log(ctx, LOG_WARNING,
+ "pam_sm_acct_mgmt success but %s is set",
PAM_WINBIND_NEW_AUTHTOK_REQD);
- _pam_log(pamh, ctrl, LOG_NOTICE, "user '%s' needs new password", username);
+ _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(pamh, ctrl, LOG_WARNING, "pam_sm_acct_mgmt success");
- _pam_log(pamh, ctrl, LOG_NOTICE, "user '%s' granted access", username);
+ _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(pamh, ctrl, LOG_NOTICE, "user '%s' granted access", username);
+ _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(pamh, ctrl, LOG_ERR, "internal module error (ret = %d, user = '%s')",
+ _pam_log(ctx, LOG_ERR,
+ "internal module error (ret = %d, user = '%s')",
ret, username);
ret = PAM_SERVICE_ERR;
goto out;
out:
- if (d) {
- iniparser_freedict(d);
- }
+ _PAM_LOG_FUNCTION_LEAVE("pam_sm_acct_mgmt", ctx, ret);
+
+ TALLOC_FREE(ctx);
- _PAM_LOG_FUNCTION_LEAVE("pam_sm_acct_mgmt", pamh, ctrl, ret);
-
return ret;
}
int pam_sm_open_session(pam_handle_t *pamh, int flags,
int argc, const char **argv)
{
- int ret = PAM_SYSTEM_ERR;
- dictionary *d = NULL;
+ int ret = PAM_SUCCESS;
+ struct pwb_context *ctx = NULL;
- /* parse arguments */
- int ctrl = _pam_parse(pamh, flags, argc, argv, &d);
- if (ctrl == -1) {
- ret = PAM_SYSTEM_ERR;
+ ret = _pam_winbind_init_context(pamh, flags, argc, argv, &ctx);
+ if (ret) {
goto out;
}
- _PAM_LOG_FUNCTION_ENTER("pam_sm_open_session", pamh, ctrl, flags);
-
- ret = PAM_SUCCESS;
+ _PAM_LOG_FUNCTION_ENTER("pam_sm_open_session", ctx);
- out:
- if (d) {
- iniparser_freedict(d);
+ 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);
- _PAM_LOG_FUNCTION_LEAVE("pam_sm_open_session", pamh, ctrl, ret);
-
return ret;
}
int pam_sm_close_session(pam_handle_t *pamh, int flags,
int argc, const char **argv)
{
- dictionary *d = NULL;
int retval = PAM_SUCCESS;
+ struct pwb_context *ctx = NULL;
+ struct wbcLogoffUserParams logoff;
- /* parse arguments */
- int ctrl = _pam_parse(pamh, flags, argc, argv, &d);
- if (ctrl == -1) {
- retval = PAM_SYSTEM_ERR;
+ retval = _pam_winbind_init_context(pamh, flags, argc, argv, &ctx);
+ if (retval) {
goto out;
}
- _PAM_LOG_FUNCTION_ENTER("pam_sm_close_session", pamh, ctrl, flags);
+ _PAM_LOG_FUNCTION_ENTER("pam_sm_close_session", ctx);
if (!(flags & PAM_DELETE_CRED)) {
retval = PAM_SUCCESS;
goto out;
}
- if (ctrl & WINBIND_KRB5_AUTH) {
+ if (ctx->ctrl & WINBIND_KRB5_AUTH) {
/* destroy the ccache here */
- struct winbindd_request request;
- struct winbindd_response response;
+
+ wbcErr wbc_status;
+ struct wbcAuthErrorInfo *error = NULL;
+
+ uint32_t flags = 0;
const char *user;
const char *ccname = NULL;
struct passwd *pwd = NULL;
- ZERO_STRUCT(request);
- ZERO_STRUCT(response);
-
retval = pam_get_user(pamh, &user, "Username: ");
- if (retval == PAM_SUCCESS) {
- if (user == NULL) {
- _pam_log(pamh, ctrl, LOG_ERR, "username was NULL!");
- retval = PAM_USER_UNKNOWN;
- goto out;
- }
- if (retval == PAM_SUCCESS) {
- _pam_log_debug(pamh, ctrl, LOG_DEBUG, "username [%s] obtained", user);
- }
- } else {
- _pam_log_debug(pamh, ctrl, LOG_DEBUG, "could not identify user");
+ if (retval) {
+ _pam_log(ctx, LOG_ERR,
+ "could not identify user");
goto out;
}
- ccname = pam_getenv(pamh, "KRB5CCNAME");
- if (ccname == NULL) {
- _pam_log_debug(pamh, ctrl, LOG_DEBUG, "user has no KRB5CCNAME environment");
+ if (user == NULL) {
+ _pam_log(ctx, LOG_ERR,
+ "username was NULL!");
+ retval = PAM_USER_UNKNOWN;
+ goto out;
}
- strncpy(request.data.logoff.user, user,
- sizeof(request.data.logoff.user) - 1);
+ _pam_log_debug(ctx, LOG_DEBUG,
+ "username [%s] obtained", user);
- if (ccname) {
- strncpy(request.data.logoff.krb5ccname, ccname,
- sizeof(request.data.logoff.krb5ccname) - 1);
+ ccname = pam_getenv(pamh, "KRB5CCNAME");
+ if (ccname == NULL) {
+ _pam_log_debug(ctx, LOG_DEBUG,
+ "user has no KRB5CCNAME environment");
}
pwd = getpwnam(user);
retval = PAM_USER_UNKNOWN;
goto out;
}
- request.data.logoff.uid = pwd->pw_uid;
- request.flags = WBFLAG_PAM_KRB5 | WBFLAG_PAM_CONTACT_TRUSTDOM;
+ flags = WBFLAG_PAM_KRB5 |
+ WBFLAG_PAM_CONTACT_TRUSTDOM;
+
+ ZERO_STRUCT(logoff);
+
+ logoff.username = user;
+
+ 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 *)&flags,
+ sizeof(flags));
+ if (!WBC_ERROR_IS_OK(wbc_status)) {
+ goto out;
+ }
- retval = pam_winbind_request_log(pamh, ctrl, WINBINDD_PAM_LOGOFF, &request, &response, user);
+ 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 (d) {
- iniparser_freedict(d);
+ if (logoff.blobs) {
+ wbcFreeMemory(logoff.blobs);
}
- _PAM_LOG_FUNCTION_LEAVE("pam_sm_close_session", pamh, ctrl, retval);
-
+ 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_sm_close_session", ctx, retval);
+
+ TALLOC_FREE(ctx);
+
return retval;
}
+/**
+ * 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)
+{
-PAM_EXTERN
+ /* 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;
- unsigned int ctrl;
+ bool cached_login = false;
/* <DO NOT free() THESE> */
const char *user;
/* </DO NOT free() THESE> */
char *Announce;
-
+
int retry = 0;
- dictionary *d = NULL;
+ char *username_ret = NULL;
+ struct wbcAuthErrorInfo *error = NULL;
+ struct pwb_context *ctx = NULL;
- ctrl = _pam_parse(pamh, flags, argc, argv, &d);
- if (ctrl == -1) {
- ret = PAM_SYSTEM_ERR;
+ ret = _pam_winbind_init_context(pamh, flags, argc, argv, &ctx);
+ if (ret) {
goto out;
}
- _PAM_LOG_FUNCTION_ENTER("pam_sm_chauthtok", pamh, ctrl, flags);
+ _PAM_LOG_FUNCTION_ENTER("pam_sm_chauthtok", ctx);
+
+ cached_login = (ctx->ctrl & WINBIND_CACHED_LOGIN);
- /* clearing offline bit for the auth in the password change */
- 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_SUCCESS) {
- if (user == NULL) {
- _pam_log(pamh, ctrl, LOG_ERR, "username was NULL!");
- ret = PAM_USER_UNKNOWN;
- goto out;
- }
- if (ret == PAM_SUCCESS) {
- _pam_log_debug(pamh, ctrl, LOG_DEBUG, "username [%s] obtained",
- user);
- }
- } else {
- _pam_log_debug(pamh, ctrl, LOG_DEBUG,
+ 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(pamh, ctrl, user);
+ ret = valid_user(ctx, user);
switch (ret) {
case 1:
ret = PAM_USER_UNKNOWN;
default:
break;
}
-
+
/*
* obtain and verify the current password (OLDAUTHTOK) for
* the user.
*/
if (flags & PAM_PRELIM_CHECK) {
- struct winbindd_response response;
time_t pwdlastset_prelim = 0;
-
+
/* instruct user what is happening */
-#define greeting "Changing password for "
- Announce = (char *) malloc(sizeof(greeting) + strlen(user));
- if (Announce == NULL) {
- _pam_log(pamh, ctrl, LOG_CRIT, "password - out of memory");
+
+#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;
}
- (void) strcpy(Announce, greeting);
- (void) strcpy(Announce + sizeof(greeting) - 1, user);
#undef greeting
-
- lctrl = ctrl | WINBIND__OLD_PASSWORD;
- ret = _winbind_read_password(pamh, lctrl,
+
+ 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(pamh, ctrl, LOG_NOTICE, "password - (old) token not obtained");
+ _pam_log(ctx, LOG_NOTICE,
+ "password - (old) token not obtained");
goto out;
}
- /* We don't need krb5 env set for password change test. */
- ctrl &= ~WINBIND_KRB5_AUTH;
-
/* verify that this is the password for this user */
-
- ret = winbind_auth_request(pamh, ctrl, user, pass_old,
- NULL, NULL, &response, &pwdlastset_prelim, NULL);
- if (ret != PAM_ACCT_EXPIRED &&
+ 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;
- if (d) {
- iniparser_freedict(d);
- }
- /* Deal with offline errors. */
- PAM_WB_REMARK_CHECK_RESPONSE_RET(pamh,
- response,
- "NT_STATUS_NO_LOGON_SERVERS");
- PAM_WB_REMARK_CHECK_RESPONSE_RET(pamh,
- response,
- "NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND");
- PAM_WB_REMARK_CHECK_RESPONSE_RET(pamh,
- response,
- "NT_STATUS_ACCESS_DENIED");
- return ret;
+ 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);
+ 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(pamh, ctrl, LOG_CRIT, "failed to set PAM_OLDAUTHTOK");
+ _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.
+ * get the old token back.
*/
-
+
ret = _pam_get_item(pamh, PAM_OLDAUTHTOK, &pass_old);
-
+
if (ret != PAM_SUCCESS) {
- _pam_log(pamh, ctrl, LOG_NOTICE, "user not authenticated");
+ _pam_log(ctx, LOG_NOTICE,
+ "user not authenticated");
goto out;
}
-
- lctrl = ctrl & ~WINBIND_TRY_FIRST_PASS_ARG;
-
+
+ lctrl = ctx->ctrl & ~WINBIND_TRY_FIRST_PASS_ARG;
+
if (on(WINBIND_USE_AUTHTOK_ARG, lctrl)) {
lctrl |= WINBIND_USE_FIRST_PASS_ARG;
}
* use_authtok is to force the use of a previously entered
* password -- needed for pluggable password strength checking
*/
-
- ret = _winbind_read_password(pamh, lctrl,
- NULL,
- "Enter new NT password: ",
- "Retype new NT password: ",
- (const char **) &pass_new);
-
+
+ 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(pamh, ctrl, LOG_ALERT
- ,"password - new password not obtained");
+ _pam_log_debug(ctx, LOG_ALERT,
+ "password - "
+ "new password not obtained");
pass_old = NULL;/* tidy up */
goto out;
}
* 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);
+ _pam_get_data(pamh, PAM_WINBIND_PWD_LAST_SET,
+ &pwdlastset_update);
- ret = winbind_chauthtok_request(pamh, ctrl, user, pass_old, pass_new, 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);
goto out;
}
- /* just in case we need krb5 creds after a password change over msrpc */
-
- if (ctrl & WINBIND_KRB5_AUTH) {
- struct winbindd_response response;
-
- const char *member = get_member_from_config(pamh, argc, argv, ctrl, d);
- const char *cctype = get_krb5_cc_type_from_config(pamh, argc, argv, ctrl, d);
-
- ret = winbind_auth_request(pamh, ctrl, user, pass_new,
- member, cctype, &response, NULL, NULL);
+ 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 (d) {
- iniparser_freedict(d);
+
+ 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);
}
- /* Deal with offline errors. */
- PAM_WB_REMARK_CHECK_RESPONSE_RET(pamh,
- response,
- "NT_STATUS_NO_LOGON_SERVERS");
- PAM_WB_REMARK_CHECK_RESPONSE_RET(pamh,
- response,
- "NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND");
- PAM_WB_REMARK_CHECK_RESPONSE_RET(pamh,
- response,
- "NT_STATUS_ACCESS_DENIED");
- return ret;
+
+ goto out;
}
} else {
ret = PAM_SERVICE_ERR;
}
out:
- if (d) {
- iniparser_freedict(d);
+ {
+ /* 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;
+ }
+ }
}
- _PAM_LOG_FUNCTION_LEAVE("pam_sm_chauthtok", pamh, ctrl, ret);
-
+ wbcFreeMemory(error);
+
+ _PAM_LOG_FUNCTION_LEAVE("pam_sm_chauthtok", ctx, ret);
+
+ TALLOC_FREE(ctx);
+
return ret;
}
* 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> 2005-2007
+ * 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.
+ * 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
git.samba.org / ira / wip.git / blobdiff